How do I get an XY-graph to auto append?

Here is my problem. I have a Visual C program getting info from a user. That info is appended to a log file everytime the user hits "enter". Now, my labview program has to display the data in a graph, but I only want to see the 30 most recent points. I am using Labview 6i profesional and any help would be veru much appreciated.

You will probably have a better chance of getting this answered if you post this question in LabVIEW>LabVIEW General.

Similar Messages

How do I get an XY graph to auto append data?

"Here is my problem. I have a Visual C program getting info from a user. That info is appended to a log file everytime the user hits "enter". Now, my labview program has to display the data in a graph, but I only want to see the 30 most recent points. I am using Labview 6i profesional and any help would be veru much appreciated

Okay, what I had to once was read a file that was updated by a different program. I used a state machine where one state would read the entire file at some interval. If you wanted, you could also trigger a file read when the size changes. The contents of the file went into arrays using something like the Spreadsheet String To Array function. The last x number of points were extracted with the Array Subset function. The output of the Array Subset was fed into a shift register. In another state, I used the shift register to update the XY graph. What I've done for upper and lower limits is to set a couple of cursors to those values and display them on the graph.

How can i get the average graph?(DIAdem)

hi,
How can i get the average graph(2D-graph) of 10 measures?
Can someone please help me?
THX!!!

Hello Charleen!
If you want to do it programmatically have a look at the ChnAverage command in the help (see also StatBlockCalc for advanced calculations). Interactive you can use the statistic functions in the ANALYSIS device.
Matthias
Matthias Alleweldt
Project Engineer / Projektingenieur
Twigeater?

How do I get my new mac to auto cap the the first letter in a sentence?

can some tell me how to get my new mac to auto capitalise the first letter of each sentence?

Quick answer, Pages 5.0 no longer does this. Frustrating! If you have Pages 4.3, it can do it.
Also, check out the More Like This column on the right. Some people have the same question and you might find some good tips there.

How do i get a xy graph to plot more points?

I'm using the Build xy graph express in Labview 7.0 and I was just wondering how one could increase the amount of points plotted on the graph. Right now, the graph will just plot up to 100 points and then go crazy and go back to 0. I would just like to know if there's any way to increase the amount of points that could be plotted on the graph.

An xy graph will plot exactly the number of points that are in the x and y array. That's assuming that you have the x scale set to autoscale. And, by default, each time the function is called, the graph will reset. You can select properties and change this. You don't mention where you're getting the data. Stick a probe on the input to the express VI and check the size. You can also provide some details on what you're doing or post your VI for someone to look at.

How can I get a "still" graph of my measured values?

As a student working on my thesis I have to use LabView7Express to acquire data from surface measurement (using CCD laser sensor).Once the measurements have been acquired, I need to dispay the surface hight evolution on a graph. So far I have only been able to view moving, real time graphs... Can anyone tell me if what I need to do is possible and if it is, how to programm it?
Thanks for your help!

Check the attached file. Basically, you use the invode node to "capture" the control and save it to file or displayed to a picture control.
Joe
Attachments:
Save_Still_Graph_to_Image.vi ‏35 KB

How can I get my camera to use auto frame - flex mode in the "P" mode. I can't get it.

When I use the "P" mode for stills Auto Frame is not highlighted and so I cannot get Flex Mode. Is there something
wrong with my camera or is Flex Mode only available for C1 or C2. Page 266 of the manual says its available yet there is not way I can get it.
If anyone else has this problem please let me know.
thank you

Hi Ssobel,
The FlexiZone mode is turned off when the camera is set to certain modes, such as "Continuous Shooting AF" (described on page 127 of your PowerShot SX50 HS Manual).
You may clear this and other settings by choosing the "Reset All" menu option. To access this, press the MENU button and navigate to the "Settings Tab" (you'll see the wrench and hammer icon). Scroll down to "Reset All" and press the FUNC SET button. Use the left or right arrow to choose "OK", then press FUNC SET again.
Did this answer your question? Please click the Accept as Solution button so that others may find the answer as well.

How do I get thumbnails in Preview to Auto-Open?

Recently switched from Snow Leopard to Mountain Lion. I've adapted to many of the changes, but one thing I am finding horribly inconvenient is in Preview. I do a lot of PDF work in Preview, and every time I open a new file, I then have to select thumbnails in the sidebar to open them. I am used to them always opening like they did in Snow Leopard. Does anyone know a way I can reconfigure Mountain Lion to always open the selected file with the page thumbnails showing?
Thanks.

Well, that was simple, and I feel foolish for not checking that first Thanks for your help!

How do I get my gmail and facebook auto tabs back? I have reloaded FF 5 times.

Today when I opened FF and oops page came up saying there were problems. Since then I no longer have the auto gmail and facebook tabs that came with the new version of FF. They do not load. I sent an email earlier today with no response. I have updated FF several times as suggested my your site to no avail.
Typically 3 tabs load when I open FF:
FoxNews
Gmail tab
Facebook tab.
The only thing that loads is my homepage of FoxNews.
Thank you for your time,
Shari Jones

Sonali16 wrote:
since it was new and i hadnt synced it at all, there is no backup on my computer.
Then anything you had on the phone is gone.
Settings>General>Resets>Erase All Content and Settings.
Set it up as a new device again.

How do I get my photos not to auto download into photo stream, but keep photo stream on?

My entire family has apple devices and we enjoy photo stream a lot! However, with my new iphone 5, I do not want pictures I take to auto download to photo stream! This being said, I cannot find a way to do this without turning off photo stream all together... something I do not want to do. So what do I do?

FAQ photo stream http://support.apple.com/kb/HT4486
I believe you may have answer your own question, it's either all or nothing.

How do I make an XY-Graph plot points over time?

I am building a program to plot and take data of a relationship between two voltages. One is voltage is uniquely dependent on the other. So far I have successfully built an XY-Graph to plot the voltages against each other (Voltage1 along the x-axis and Voltage2 along the y-axis). However, the XY-Graph only diplays the point (V1, V2) at the instantaneous time I am looking at it, and does not continuously plot different points as I vary the independent voltage. I need the graph to display all the points that occur as I vary the independent voltage. As of right now, all I see is one little cursor that moves all over the graph as I vary it. My program consists of a While Loop that contains all of the following: two seperate data anolog input functions that take both voltage separately from my board. The the output samples from each 'AI Sample' function are then bundled into one cluster using the 'bundle' function. The cluster output from the 'bundle' function is then wired to a 'build array' function. The 1-D array output from the 'build array' function is then wired to my 'XY-Graph'. How do I get the XY-Graph to plot a point every millisecond or so?

Bundling and then using the Build Array is not correct. Yuo can see the correct method in the help for an XY Graph below. In order to use the normal XY Grpah, you would have two shif registers. One for the X array and one for the Y. Bundle the two arrays and then wire to the graph.
The other way is to use the Express XY Graph. With that, you can just wire your scalars to the X and Y inputs and set the Reset input to false.
Message Edited by Dennis Knutson on 11-12-2007 06:32 PM
Attachments:
XY Graph 1.PNG ‏21 KB
XY Graph 2.PNG ‏6 KB

How do I get rid of + in auto dial messages

I am in China and purchased a sim card from China Mobile and switched the mobile network on the phone so that I could use in China. When I call someone from contacts, the phone call gets a wrong number. I believe it is because of the + that gets placed in front of the number. When I punch in the phone number the call goes through. How do I get rid of the + on auto dials?

Hi michasr,
This is smart-dialing feature, by which can set a default country code and area code for phone numbers so that you do not have to dial a country code and area code each time that you make a call.
To Set the default country code and area code:
From the Home screen, press the Send key.
Press the Menu key.
Click Options.
Click Smart Dialing.
Set the Country Code and Area Code fields.
If necessary, set the Local Country Code and International Dialing Digits fields.
In the National Number Length field, set the default length for phone numbers in your country.
Press the Menu key.
Click Save.
Note: When you calculate the default length for phone numbers, include your area code and local number, but do not include your country code or the National Direct Dialing prefix.
tanzim
If your query is resolved then please click on “Accept as Solution”
Click on the LIKE on the bottom right if the post deserves credit

How do I get my iPhone to stop messing around

OOkay people how do I get my iPhone to stop auto correcting to "ducking" ... You know what I'm trying to type there? Turning off auto correct doesn't work... It still auto corrects just that one word even though auto correct is disabeled. Apple seems determined to censor my freedom of speech but it's not right or funny. How can I make it stop?

inck243 wrote:
Well thats not true because I constantly have to dismiss the change every single time. Even when I disable auto correct. Why does it still try to change when I disable auto corrext?? Because they are trying to censor me. Again, it doesn't learn when I try to dismiss it, every. Single. Time.
No one is trying to censor you. Apple has no interest in what Anglo-Saxon words you chose to use. I can tell you, from personal experience, it does learn. I can tell you, it's a good thing I don't have reason to type the word "ducking" very much as it would be annoying to have to correct it every time.

How can I get extract the data between two cursors on an XY graph

How can I get extract the data between two cursors on an XY graph

Well, you say xy graph, so this might be a more complicated problem.
For a waveform graph it's trivial. Simply get the two cursor indices (property: cursor index) and apply them to array subset of the data. Is that all you need?
Here's how the above code would look like. using cursor.index instead of cursor.x elimnates the need to include scaling information.
For an xy graph, there could be multiple segments (e.g. imagine a spiral that passes the desired x range multiple times from both sides). This would neeed significantly more code for a general solution.
Message Edited by altenbach on 11-24-2009 07:53 AM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
cursorsubset.png ‏17 KB

How do I get the numbers ipad app to plot a graph of dates against values, where the most recent date is on the right of the graph, but the most recent date is at the top rather than bottom of the rows in the table?

How do I get the numbers ipad app to plot a graph of dates against values, where the most recent date is on the right of the graph, but the most recent date is at the top rather than bottom of the rows in the table?
Also how can it be a line graph without plotting a circle at each value?
Thanks this is very frustrating

Make a copy of the table and produce your Line chart or Bar chart from the copy. Sort the copy into the order you want to see in your chart.
Alternately you could use a Scatter Chart...
Jerry

How do I get an XY-graph to auto append?

Similar Messages

Maybe you are looking for