Autoscale Y only over displayed range when zoom X axis

When a graph is zoomed over only its X axis, the Y range retains its values for the entire data range. I'd like the Y range to be adjusted and scaled for only those Y values now plotted on the zoomed graph. Is it possible to have this happen automatically without resorting to code to accomplish it ?

I asked NI about this then I had some problem and was using 7.0. The message was that this was not a bug. So then you use autoscale Y on a XY graph it uses the full range to calculate the scale settings. I some sort of fixed this way. This is perhaps fixed in later versions
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)
Attachments:
Ysacle_fit.llb ‏78 KB

Similar Messages

How to display item when mouse moves over Column value??

Hi there
It would be helpful if you could resolve the following :
i) I need to display the column 'A' values of my report in a Text field when mouse moves over column B of my report.
ii) I can able to display the same column value when mouse moves over or onclick happens. but my requirement is something like i have to display the other column value when mouse moves over.
iii) Also i noticed that, i can able to display the item only on "Display only Item" and not on Text field.
Any pointers to display my column value in Text field when onclick happens on my report column?
iv) One more thing that i noticed, i can able to perform onclick or mouse over only on Editable column and not on
non editable columns.
Any pointers on how to achieve the same when mouse moves over Non editable column of report?
Reference: I have created a dummy application (refer the following link), where i can able to display column value Salary on display only item using mouse move Event.
My requirement: when i click column Ename , the text field should show salary.
http://apex.oracle.com/pls/otn/f?p=56045:1
User:guest
Pswd: apex_demo
Any pointers on this would be appreciated.
Thanks
Vijay

Vijay,
If you use Jquery then this should do the trick.
$(document).ready(function() {
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{code}
after looking at the source of your page it seems that your class for your report region is *class="t20Report t20Standard"* I am not 100% sure but you might have to correct that in the template. I am not sure how the selector will handle the space in the class name.
Hope this helps,
Tyson

Ive had tunes downloaded on my PC for over 4 years. Currently when I login to my iTunes account it only lists 1 song on my playboard. I should have over 1000. When I log in on a different computer I can see the complete song list. Any ideas what to do?

Ive had iTunes downloaded on my laptop for over 4 years. Currently when I log in to my account there is only 1 song listed on my song board, when I should have over 1000. When I login to my itunes account on a different computer, or my kids login on there ipods and ipads, my songs are listed and available. I have unistalled and re-installed all the apple software as described on the Apple help page, but the same thing is happening when I reistalled.. Any help or advice would be greatly appreciated...Thanks

Hi there CourtniSpahr,
You may find the troubleshooting steps in the article below helpful.
No content shows up in iTunes after updating
http://support.apple.com/kb/ts1967
-Griff W.

Image display control scrolling does not work properly when zoomed in

I am using a ROI on an image in the image display control. When zooming into the image to fine-adjust the positioning of the ROI, the image scrolling does not work properly. As far as I understand, the image should scroll automatically when the ROI is leaving the visible area. However, the scrolling behaviour seems to depend on the origin of the Labview panel, not the origin of the image display control, which might require to move the ROI way out of the visible area before the scrolling takes place. In other words: the coordinate system of the image display control is shifted with respect to the true visible image area, depending on where you place it on the front panel. As a consequence, when clicking on a ROI which is in the visible area, but is outside of what Labview thinks is the visible area, it might immediately jump to the left border of the image, making the positioning of the ROI really difficult.
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Dirk

Hello,
no, I am not talking about the tools palette. Just place an image control with some image in it on a new VI front panel. Then, use the rectangle from the tools and select a ROI in the image. If you zoom in (using the magnification glass), and then grab the ROI and move it around, the image scroll with the ROI. So far, so good. If you now place the image control elsewhere on the panel, or add new control above it, resize the panel, etc. , this scrolling when moving the ROI will not work correctly if the origin (0,0) of the panel is far away from the image control.
I have attached a VI for simplicity (although there is hardly any code in it).
If you make a ROI and try to move it down, you will notice that scrolling starts if you move the mouse out to about 10cms below the image (depens on your screen, of course). After that, if you click on the ROI, the scroll bars and ROI might jump up to the upper end of the image. Imagine how annoying this is if you try to finely adjust the ROI position.
I think it is a bug in the implementation of the image display control.
Thanks,
Dirk
Attachments:
scrolling.vi ‏818 KB

IPhone 4 OS 7.1.2 (11D257) display normal when switching on, turns to very high contrast primary colours only, no tonal graduation. Wifi no longer works.

iPhone 4 OS 7.1.2 (11D257) display normal when switching on, turns to very high contrast with bright primary colours only, no tonal graduation.Initially problem arose every time I switched the Camera on, but has worsened such that any application can cause it. In Camera, after a short time screen goes black. Also, Wifi no longer works.

You're welcome
In case you don't want to buy a new iPhone, Apple will replace the whole unit if you are willing to pay the service fee of 149$ for the iPhone4.
Out-of-warranty repair service
If your repair isn’t covered by Apple’s One Year Limited Warranty, AppleCare+, or AppleCare Protection Plan, your iPhone might be eligible for out-of-warranty service. For example, liquid damage isn’t covered by warranty but might be eligible for out-of-warranty service. Some damage isn’t eligible at all, for example if your device has been broken into multiple pieces. See Apple’s Repair Terms and Conditions for complete details.
Read Apple’s Repair Terms and Conditions
Model
Out-of-warranty service fee
Battery service*
iPhone 6 Plus
$329
$79
*available only if battery
fails Apple’s diagnostic test
iPhone 6
$299
iPhone 5s, iPhone 5c, iPhone 5
$269
iPhone 4s
$199
iPhone 4, iPhone 3GS, iPhone 3G,
Original iPhone
$149
Plus a $6.95 shipping fee, if required. Fees are in USD and exclude local tax. Pricing is for service through Apple. The final service fee we charge will be determined during testing and may be less than the service fee listed above. Pricing and terms vary for service through an Apple Authorized Service Provider.
copied from Service Answer Center - iPhone

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This is my first time posting here, so I'm sorry, I re-read my post several times and honestly did think I provided enough information, but you're right, it wasn't the right kind. So please (continue to) bear with me, I'm really not trying to be ignorant. I honestly assumed the issue was something I was doing wrong in Bridge, nothing to do with my computer specs.
I am using a late-2008 Macbook, running Yosemite 10.1.1 (screenshot below)
On the Mac I am using Bridge CC 6.1.1.115 and Photoshop CC 2014 (2014.2.1 release, 20141014.r.257 x64)
Here is a link to the System Info from Photoshop on the Mac
Here is a screenshot of my System Overview on the Mac
Here is a screenshot of my Photoshop performance preferences on the Mac
I am also using a Dell desktop with Windows 8, running Photoshop CC 2014 (2014.2.1 release, 20141014.r.257 x32) and Bridge CC 6.1.0.116 x32 (on a separate CC account with separate files that I don't try to sync or anything)
Here is a link to the System Info from Photoshop on the Windows computer.
Here is a screenshot of the system overview on the Windows
Here is a screenshot of my Photoshop Performance preferences on the Windows computer
I work with jpg, psd, ai, svg, and pdf files. Most of my stacks are three different file types of the same image, usually jpg, psd/ai, and pdf.
I have not recieved any error messages
I am not having issues opening raw files, I am not having printing issues, I have listed the troubleshooting steps I have taken.
Is there any information you need that I missed? I'm trying not to be a dingus, but I'll have to ask you to be patient with me in the meantime. I haven't ever looked up half the hardware/software details that were suggested and I don't know how to off the top of my head, so I provided what I already knew how to

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How can i fix my iphone 3g if and only it displays the apple logo when it is connected to its charger but it displays nothing when the charger is removed?

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Plug it into a wall outlet and leave it plugged in for approximately 20 minutes.
Then try a reset by pressing and holding the home and power buttons for 15-20 seconds.
Does the device power on at this point? If not, the battery or logic board is gone.
Take it to Apple for evaluation.
It may be worth replacing the battery, but I personally wouldn't spend the $149US for an Out of Warranty replacement on a 3+yr old device.

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Hafizur Rahman wrote:
when i am open the cellular data on but no icon E display but when Enable 3G on-of then E is aviable.its a device problem or Carrier ?
Problem? I'm not even sure what your problem is, much less whether it's a problem with the phone or the carrier.

Why am I only getting 0.24mbs download speed on my ipad over my wifi when my Microsoft laptop is working massively faster?

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Hi,
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I am getting the error "This movie can be played only on displays that support HDCP" when attempting to play a HD movie from iTunes to my TV. The TV is a Samsung UN46B7000WF w/resolution 1080p

Hello Apple Community,
I am getting the message "THis movie can be played only on displays that support HDCP (High-bandwidth Digital Content Protection)." This is the first time I have tried to watch a HD movie that I bought from iTunes from my iMac to my TV. (This is also the first attempt to go from my iMac to my TV.) I have a Samsung LED tv that says it is HDCP compatible with Full HD (1080p) and Native resolution is 1920X1080. I bought a Rocketfish Thunderbolt to/Mini Displayport to HDMI adapter (says support is up to 1920X1200 video resolution) and Mediabridge ULTRA Series HDMI Cable (35 Feet) - High-Speed Supports Ethernet, 3D and Audio Return category 2 certified (supports resolution up to 4K including 1440p, 1080p, 1080i and lower).
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Thank you in advance for your assistance.
Sincerely,
Lisa

Hello All,
I have figured out the sound issue: System Preferences>Sound and choose the TV for output.
Regards,
Lisa

CS4 NOT capable of sharp displays at all zoom levels

I must have been asleep, until now, and missed the significance and importance of what follows.
In post #11 here:
http://forums.adobe.com/thread/375478?tstart=30
on 19 March 2009 Chris Cox (Adobe Photoshop Engineer - his title on the old forums) said this, in a discussion regarding sharpness in CS4:
"You can't have perfectly sharp images at all zoom levels.". Unfortunately, my experience with CS4 since its release late last year has repeatedly confirmed the correctness of this statement.
What makes this statement so disturbing is that it contradicts an overwhelming amount of the pre- and post-release promotional advertising of CS4 by Adobe, to the effect that the OpenGL features of CS4 enable it to display sharp images at all zoom levels and magnifications. What is surprising is that this assertion has been picked up and regurgitated in commentary by other, sometimes highly experienced, Ps users (some unconnected with, but also some directly connected with, Adobe). I relied upon these representations when making my decision to purchase the upgrade from CS3 to CS4. In fact, they were my principal reason for upgrading. Without them, I would not have upgraded. Set out in numbered paragraphs 1 to 6 below is a small selection only of this material.
1. Watch the video "Photoshop CS4: Buy or Die" by Deke McClelland (inducted into the Photoshop Hall of Fame, according to his bio) on the new features of CS4 in a pre-release commentary to be found here:
http://fyi.oreilly.com/2008/09/new-dekepod-deke-mcclelland-on.html
Notice what he says about zooming with Open GL: "every zoom level is a bicubically rendered thing of beauty". That, when viewed with the zooming demonstrated, can only be meant to convey that your image will be "sharp" at all zoom levels. I'm sure he believes it too - Deke is someone who is noted for his outspoken criticism of Photoshop when he believes it to be deserved. It would seem that he must not have experimented and tested to the extent that others posting in this forum have done so.
2. Here's another Adobe TV video from Deke McClelland:
http://tv.adobe.com/#vi+f1584v1021
In this video Deke discusses the "super smooth" and "very smooth" zooming of CS4 at all zoom levels achieved through the use of OpenGL. From the context of his comments about zooming to odd zoom levels like 33.33% and 52.37%, it is beyond doubt that Deke's use of the word "smooth" is intended to convey "sharp". At the conclusion of his discussion on this topic he says that, as a result of CS4's "smooth and accurate" as distinct from "choppy" (quoted words are his) rendering of images at odd zoom levels (example given in this instance was 46.67%), "I can actually soft proof sharpening as it will render for my output device".
3. In an article by Philip Andrews at photoshopsupport.com entitled 'What's New In Adobe Photoshop CS4 - Photoshop 11 - An overview of all the new features in Adobe Photoshop CS4',
see: http://www.photoshopsupport.com/photoshop-cs4/what-is-new-in-photoshop-cs4.html
under the heading 'GPU powered display', this text appears :
"Smooth Accurate Pan and Zoom functions – Unlike previous versions where certain magnification values produced less than optimal previews on screen, CS4 always presents your image crisply and accurately. Yes, this is irrespective of zoom and rotation settings and available right up to pixel level (3200%)." Now, it would be a brave soul indeed who might try to argue that "crisply and accurately" means anything other than "sharply", and certainly, not even by the wildest stretch of the imagination, could it be taken to mean "slightly blurry but smooth" - to use the further words of Chris Cox also contained in his post #11 mentioned in the initial link at the beginning of this post.
4. PhotoshopCAFE has several videos on the new features of CS4. One by Chris Smith here:
http://www.photoshopcafe.com/cs4/vid/CS4Video.htm
is entitled 'GPU Viewing Options". In it, Chris says, whilst demonstrating zooming an image of a guitar: "as I zoom out or as I zoom in, notice that it looks sharp at any resolution. It used to be in Photoshop we had to be at 25, 50 , 75 (he's wrong about 75) % to get the nice sharp preview but now it shows in every magnification".
5. Here's another statement about the sharpness of CS4 at odd zoom levels like 33.33%, but inferentially at all zoom levels. It occurs in an Adobe TV video (under the heading 'GPU Accererated Features', starting at 2 min 30 secs into the video) and is made by no less than Bryan O'Neil Hughes, Product Manager on the Photoshop team, found here:
http://tv.adobe.com/#vi+f1556v1686
After demonstrating zooming in and out of a bunch of documents on a desk, commenting about the type in the documents which is readily visible, he says : "everything is nice and clean and sharp".
6. Finally, consider the Ps CS4 pdf Help file itself (both the original released with 11.0 and the revised edition dated 30 March 2009 following upon the release of the 11.0.1 update). Under the heading 'Smoother panning and zooming' on page 5, it has this to say: "Gracefully navigate to any area of an image with smoother panning and zooming. Maintain clarity as you zoom to invididual pixels, and easily edit at the highest magnification with the new Pixel Grid." The use of the word "clarity" can only mean "sharpness" in this context. Additionally, the link towards the top of page 28 of the Help file (topic of Rotate View Tool) takes you to yet another video by Deke McClelland. Remember, this is Adobe itself telling you to watch this video. 5 minutes and 40 seconds into the video he says: "Every single zoom level is fluid and smooth, meaning that Photoshop displays all pixels properly in all views which ensures more accurate still, video and 3D images as well as better painting, text and shapes.". Not much doubt that he is here talking about sharpness.
So, as you may have concluded, I'm pretty upset about this situation. I have participated in another forum (which raised the lack of sharp rendering by CS4 on several occasions) trying to work with Adobe to overcome what I initially thought may have been only a problem with my aging (but nevertheless, just-complying) system or outdated drivers. But that exercise did not result in any sharpness issue fix, nor was one incorporated in the 11.0.1 update to CS4. And in this forum, I now read that quite a few, perhaps even many, others, with systems whose specifications not only match but well and truly exceed the minimum system requirements for OpenGL compliance with CS4, also continue to experience sharpness problems. It's no surprise, of course, given the admission we now have from Chris Cox. It seems that CS4 is incapable of producing the sharp displays at all zoom levels it was alleged to achieve. Furthermore, it is now abundently clear that, with respect to the issue of sharpness, it is irrelevant whether or not your system meets the advertised minimum OpenGL specifications required for CS4, because the OpenGl features of CS4 simply cannot produce the goods. What makes this state of affairs even more galling is that, unlike CS3 and earlier releases of Photoshop, CS4 with OpenGL activated does not even always produce sharp displays at 12.5, 25, and 50% magnifications (as one example only, see posts #4 and #13 in the initial link at the beginning of this post). It is no answer to say, and it is ridiculous to suggest (as some have done in this forum), that one should turn off OpenGL if one wishes to emulate the sharp display of images formerly available.

Thanks, Andrew, for bringing this up. I have seen comments and questions in different forums from several CS4 users who have had doubts about the new OpenGL display functionality and how it affects apparent sharpness at different zoom levels. I think part of the interest/doubt has been created by the over-the-top hype that has been associated with the feature as you documented very well.
I have been curious about it myself and honestly I didn't notice it at first but then as I read people's comments I looked a little closer and there is indeed a difference at different zoom levels. After studying the situation a bit, here are some preliminary conclusions (and I look forward to comments and corrections):
The "old", non-OpenGL way of display was using nearest-neighbor interpolation.
I am using observation to come to this conclusion, using comparison of images down-sampled with nearest-neighbor and comparing them to what I see in PS with OpenGL turned off. They look similar, if not the same.
The "new", OpenGL way of display is using bilinear interpolation.
I am using observation as well as some inference: The PS OpenGL preferences have an option to "force" bilinear interpolation because some graphics cards need to be told to force the use of shaders to perform the required interpolation. This infers that the interpolation is bilinear.
Nothing is truly "accurate" at less than 100%, regardless of the interpolation used.
Thomas Knoll, Jeff Schewe, and others have been telling us that for a long time, particularly as a reason for not showing sharpening at less than 100% in ACR (We still want it though ). It is just the nature of the beast of re-sampling an image from discrete pixels to discrete pixels.
The "rule of thumb" commonly used for the "old", non-OpenGL display method to use 25%, 50%, etc. for "accurate" display was not really accurate.
Those zoom percentages just turned out to be less bad than some of the other percentages and provided a way to achieve a sort of standard for comparing things. Example: "If my output sharpening looks like "this" at 50% then it will look close to "that" in the actual print.
The "new", OpenGL interpolation is certainly different and arguably better than the old interpolation method.
This is mainly because the more sophisticated interpolation prevents drop-outs that occurred from the old nearest-neighbor approach (see my grid samples below). With nearest-neighbor, certain details that fall into "bad" areas of the interpolated image will be eliminated. With bilinear, those details will still be visible but with less sharpness than other details. Accuracy with both the nearest-neighbor and bilinear interpolations will vary with zoom percentage and where the detail falls within the image.
Since the OpenGL interpolation is different, users may need to develop new "rules of thumb" for zoom percentages they prefer when making certain judgements about an image (sharpening, for example).
Note that anything below 100% is still not "accurate", just as it was not "accurate" before.
As Andrew pointed out, the hype around the new OpenGL bilinear interpolation went a little overboard in a few cases and has probably led to some incorrect expectations from users.
The reason that some users seem to notice the sharpness differences with different zooms using OpenGL and some do not (or are not bothered by it) I believe is related to the different ways that users are accustomed to using Photoshop and the resolution/size of their monitors.
Those people who regularly work with images with fine details (pine tree needles, for example) and/or fine/extreme levels of sharpening are going to see the differences more than people who don't. To some extent, I see this similar to people who battle with moire: they are going to have this problem more frequently if they regularly shoot screen doors and people in fine-lined shirts. Resolution of the monitor used may also be a factor. The size of the monitor in itself is not a factor directly but it may influence how the user uses the zoom and that may in turn have an impact on whether they notice the difference in sharpness or not. CRT vs LCD may also play a role in noticeability.
The notion that the new OpenGL/bilinear interpolation is sharp except at integer zoom percentages is incorrect.
I mention this because I have seen at last one thread implying this and an Adobe employee participated who seemed to back it up. I do not believe this is correct. There are some integer zoom percentages that will appear less sharp than others. It doesn't have anything to do with integers - it has to do with the interaction of the interpolation, the size of the detail, and how that detail falls into the new, interpolated pixel grid.
Overall conclusion:
The bilinear interpolation used in the new OpenGL display is better than the old, non-OpenGL nearest-neighbor method but it is not perfect. I suspect actually, that there is no "perfect" way of "accurately" producing discrete pixels at less than 100%. It is just a matter of using more sophisticated interpolation techniques as computer processing power allows and adapting higher-resolution displays as that technology allows. When I think about it, that appears to be just what Adobe is doing.
Some sample comparisons:
I am attaching some sample comparisons of nearest-neighbor and bilinear interpolation. One is of a simple grid made up of 1 pixel wide lines. The other is of an image of a squirrel. You might find them interesting. In particular, check out the following:
Make sure you are viewing the Jpegs at 100%, otherwise you are applying interpolation onto interpolation.
Notice how in the grid, a 50% down-sample using nearest-neighbor produces no grid at all!
Notice how the 66.67% drops out some lines altogether in the nearest-neighbor version and these same lines appear less sharp than others in the bilinear version.
Notice how nearest-neighbor favors sharp edges. It isn't accurate but it's sharp.
On the squirrel image, note how the image is generally more consistent between zooms for the bilinear versions. There are differences in sharpness though at different zoom percentages for bilinear, though. I just didn't include enough samples to show that clearly here. You can see this yourself by comparing results of zooms a few percentages apart.
Well, I hope that was somewhat helpful. Comments and corrections are welcomed.

P2415Q - No display over DVI, HDMI. No menu. Worked perfectly for one month over display port

Reason Line: Dell P2415Q. After one month working perfectly over display port, no display on screen over Display Port or HDMI, no response to menu buttons, backlight and power LED on but no image on screen.
Problem Description
The monitor worked out of the box for one month using the display port to mini display port cable provided with the monitor, which was plugged into my XFX 7970 and 7950 graphics cards. It supported 4K at 60Hz and was exceptional for photos, videos and games. On Wednesday the monitor stopped working, no image or menu is displayed on the monitor. I plugged in my old monitor to help diagnose via DVI from the same graphics card. When I press the power button on the Dell P2415Q monitor, the power LED lights up and the computer detects the monitor (as shown in the windows screen resolution menu). It sets it as a secondary display but the monitor remains black, I can see the power LED and backlight is on. No power saving mode popup appears on the monitor, when I press the menu buttons there is no response from the screen, it remains black. I repeated with a HDMI cable the same issue occurs with no response or image. I repeated and disabled crossfire (which allows the graphics cards to function independently) and tried the second graphics card with no response. I tested the HDMI cable I used on my old LG monitor, it works well. I have tried connecting a laptop over HDMI to the monitor too, with no response from the monitor. I have exhausted all the tests I can think of, I presume I will have to return the monitor for repair or replacement under warranty. A question to the dell rep and community - is there anything else I can try / do to get it working?
Monitor / Computer Details
Monitor service tag: <removed>
Computer: Non-Dell, self build about 2 years ago. Ivy Bridge i5, Gigabyte Sniper Motherboard, 16GB RAM, XFX 7970 GPU and XFGX 7950 GPU in crossfire, 256GB SSD, 860W Corsair AX power supply (860W on 12V rails). Windows 7, 64-bit. (Secondary Monitor LG D2342).
Operating System: Windows 7, 64 Bit.
Video Card: XFX 7970 and XFX 7950 in Crossfire (tested separately, monitor produces fault with both).
Video Card Driver: 14.12 AMD Catalyst Driver (rolled back to older driver, monitor still produces fault).
Video Card Output Ports: Tested with miniDP and HDMI on both cards, with crossfire enabled and disabled. Monitor still produces fault.
Video Card Cable: miniDP to DP cable provided with monitor. HDMI cable, tested with alternate monitor to confirm it functions correctly.
Monitor Menu Button: Non responsive, when power is turned on the computer successfully detects the Dell P2415Q monitor, the backlight turns on but no image appear on the screen. Pressing the menu buttons yields no result - menu does not appear on the screen. Power LED is on.
Monitor Purchase: Purchased from Overclockers.co.uk March 2015.

* Turn the monitor off
* Disconnect all cables from the monitor including the power cable
* Press the monitor power button in for 15 seconds
* Reconnect the monitor cables and re-test. If still no go, your only option is to get it exchanged per the purchased warranty
* But first the service tag must be transferred into your name using this form

Is ther a way to speed up a Mac? Mine has gotten slower and slower over time. When memory comes close to full would that have an effect on performance? Is there a way to determine unused programs/software to remove and free space?

Is there a way to speed up a Mac (similar to de-fragging on a PC)? Mine has gotten slower and slower over time.
When memory/disc comes close to full would that have an effect on performance? How should I determine what programs/software to remove and free space?

Things You Can Do To Resolve Slow Downs
If your computer seems to be running slower here are some things you can do:
Start with visits to:     OS X Maintenance - MacAttorney;
                                  The X Lab: The X-FAQs;
                                  The Safe Mac » Mac Performance Guide;
                                  The Safe Mac » The myth of the dirty Mac;
                                  Mac maintenance Quick Assist.
Boot into Safe Mode then repair your hard drive and permissions:
Repair the Hard Drive and Permissions Pre-Lion
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
Repair the Hard Drive - Lion/Mountain Lion/Mavericks
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the Utilites Menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD disk icon and click on the arrow button below.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported, then click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.
Restart your computer normally and see if this has helped any. Next do some maintenance:
For situations Disk Utility cannot handle the best third-party utility is Disk Warrior; DW only fixes problems with the disk directory, but most disk problems are caused by directory corruption; Disk Warrior 4.x is now Intel Mac compatible.
Note: Alsoft ships DW on a bootable DVD that will startup Macs running Snow Leopard or earlier. It cannot start Macs that came with Lion or later pre-installed, however, DW will work on those models.
Suggestions for OS X Maintenance
OS X performs certain maintenance functions that are scheduled to occur on a daily, weekly, or monthly period. The maintenance scripts run in the early AM only if the computer is turned on 24/7 (no sleep.) If this isn't the case, then an excellent solution is to download and install a shareware utility such as Macaroni, JAW PseudoAnacron, or Anacron that will automate the maintenance activity regardless of whether the computer is turned off or asleep. Dependence upon third-party utilities to run the periodic maintenance scripts was significantly reduced since Tiger. These utilities have limited or no functionality with Snow Leopard or later and should not be installed.
OS X automatically defragments files less than 20 MBs in size, so unless you have a disk full of very large files there's little need for defragmenting the hard drive.
Helpful Links Regarding Malware Protection
An excellent link to read is Tom Reed's Mac Malware Guide.
Also, visit The XLab FAQs and read Detecting and avoiding malware and spyware.
See these Apple articles:
          Mac OS X Snow Leopard and malware detection
          OS X Lion- Protect your Mac from malware
          OS X Mountain Lion- Protect your Mac from malware
          About file quarantine in OS X
If you require anti-virus protection I recommend using VirusBarrier Express 1.1.6 or Dr.Web Light both from the App Store. They're both free, and since they're from the App Store, they won't destabilize the system. (Thank you to Thomas Reed for these recommendations.)
Troubleshooting Applications
I recommend downloading a utility such as TinkerTool System, OnyX, Mavericks Cache Cleaner, or Cocktail that you can use for removing old log files and archives, clearing caches, etc. Corrupted cache, log, or temporary files can cause application or OS X crashes as well as kernel panics.
If you have Snow Leopard or Leopard, then for similar repairs install the freeware utility Applejack. If you cannot start up in OS X, you may be able to start in single-user mode from which you can run Applejack to do a whole set of repair and maintenance routines from the command line. Note that AppleJack 1.5 is required for Leopard. AppleJack 1.6 is compatible with Snow Leopard. Applejack does not work with Lion and later.
Basic Backup
For some people Time Machine will be more than adequate. Time Machine is part of OS X. There are two components:
1. A Time Machine preferences panel as part of System Preferences;
2. A Time Machine application located in the Applications folder. It is
    used to manage backups and to restore backups. Time Machine
    requires a backup drive that is at least twice the capacity of the
    drive being backed up.
Alternatively, get an external drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):
1. Carbon Copy Cloner
2. Get Backup
3. Deja Vu
4. SuperDuper!
5. Synk Pro
6. Tri-Backup
Visit The XLab FAQs and read the FAQ on backup and restore. Also read How to Back Up and Restore Your Files. For help with using Time Machine visit Pondini's Time Machine FAQ for help with all things Time Machine.
Referenced software can be found at MacUpdate.
Additional Hints
Be sure you have an adequate amount of RAM installed for the number of applications you run concurrently. Be sure you leave a minimum of 10% of the hard drive's capacity as free space.
Add more RAM. If your computer has less than 2 GBs of RAM and you are using OS X Leopard or later, then you can do with more RAM. Snow Leopard and Lion work much better with 4 GBs of RAM than their system minimums. The more concurrent applications you tend to use the more RAM you should have.
Always maintain at least 15 GBs or 10% of your hard drive's capacity as free space, whichever is greater. OS X is frequently accessing your hard drive, so providing adequate free space will keep things from slowing down.
Check for applications that may be hogging the CPU:
Pre-Mavericks
Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time (>=70,) then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.
Mavericks and later
Open Activity Monitor in the Utilities folder. Select All Processes from the View menu. Click on the CPU tab in the toolbar. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time (>=70,) then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.
Often this problem occurs because of a corrupted cache or preferences file or an attempt to write to a corrupted log file.

A 1 pixel gap appears on webpage on the ipad or when zoomed on a Mac with Firefox 4

I'm having an issue with a website having a 1 pixel gap under various OS's and browsers.
http://www.coffeeandcream.ca/
When viewed on an iPad it shows a 1 pixel gap on the right side of the link icons. When you zoom on the iPad, the gap disappears and reappears at random zoom factors.
When viewed on my Mac Pro under Firefox (version 4) it is fine to start, but when zoomed, random images have the 1 pixel gap sometimes above and below or to the left or right or sometimes both above/below and left/right.
I'm not over worried about the behaviour of Firefox...since it is only when the page is zoomed.
When I view it on my Windows PC, I have no issue with the gap under Firefox 3 or 4, or IE.
Any thoughts on what is going on?
Thanks in advance,

Have you thought of entering the following code at the very top of your CSS file?
                margin: 0;
                padding: 0;
                border: 0;
This should reset the browser of your iPad and FF in Mac. I use neither so I can't test it at my end. the above code is not likely to affect any other standards compliant browsers.
hth

Autoscale Y only over displayed range when zoom X axis

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