Add a simple setting to Intensity Graph that draws grid on top of data

It would be extremely useful to break up the Intensity Graph data into cells to easily see "coordinates". At the moment you have to follow coordinates with your finger or a pen.
I was given this solution but it is surely an overkill for what should be a simple setting.
http://forums.ni.com/t5/Measurement-Studio-for-NET/WPF-Intensity-Graph-gridlines-not-visible-on-plotted-data/td-p/3168193

Siddhesh,
You could define buttons / controls ... called 'next comp code' and 'prev comp code', and then in the events for these controls you could re-populate the alv data table with the data for each company code each time a button is pressed.
Hope this helps ...
Duane

Similar Messages

Question about intensity graphs

Hi all Labview gurus and lovers,
I have a question to all of you. Last time I encountered with the interesting problem connecting to the building of the intensity graphs from the measurements. Suppose I have a matrix of numbers actually the voltages that I give to piezo motors. Afterwards I get some data from the measurement and I build some intensity graph from that data. And I want that every measurement will corresponding to voltage that I gave to the piezo motor. So I want to build the intensity graph as I dictate to the program to build it.
Example: I want to scan area ,some square from x=0.5;y=0.5 to x=-0.5;y=-0.5. and I did some algoritm that builds me some matrix of numbers depending on resolution of the picture; for instance if the resolution is 256, so the number of x will be 256 just like y=256 kinda 256 lines. Afterwards I say to the intensity graph that Xmax is 0.5 and Xmin is -0.5 just like Ymax=0.5 and Ymin =-0.5; also I deliver to him x and y offset and multliplier. So when I see how it builds my gaph I dont see that it starts from the [0.5 0.5] point as I want it. So my question is: how can I be sure that it will start from the point I want it to start? And how can I dictate to the graph to start to build the graph from the point I want? Because the problem happens when I want to zoom some area. When I zoom some area it gives me something different from what I expect to get.
thank you.

dimani4 wrote:
... also I deliver to him x and y offset and multliplier.
What is your definition of deliver? I don't understand.
All you need to set is the offset and multiplier to define the linear relation between array indices and axis values.
In your particular case you would set x0=0.5 and dx= -1/256 or similar (might need a small tweak)
In summary, x0,dx define the mapping of array indices to real values. These never change for a given set of data. Xmin,Xmax, etc define the visible area. These are modifiied during zooming and are purely cosmetic.
dimani4 wrote:
When I zoom some area it gives me something different from what I expect to get.
You should learn how to ask efficiently. Attach a small example with some typical data in a diagram constant. Tell us what you get and tell us what you expect to get! In the above sentence "different" is not sufficient as a description, since both sides of the equation are undefined!
LabVIEW Champion . Do more with less code and in less time .

X-Y with intensity graph

Hello.
This is my task :
I have 2 waveforms with different frequency ( this is my output) I read them with Analog input. One waveform is x and the other is y. I have also the third input that is the intensity in every point ( so I have x,y and intensity). I need to built graph with these 3 parameters. Do you have any idea what kind of chart do I need?

I will try to explain my problem again.
I need to built raster with signal. In the analog output (two channels) I generate two waveforms with different frequency. With two Analog inputs I read this waveforms and also I read additional AI with signal intensity. And I need to present in the intensity chart or graph signal intensity in every pixel (x-y). So I need to solve a number of problems:
1. First of all I get tree AI in one waveform chart. And I didn't understand how I can split the signals from the different waveforms.
2. How to "explain" to the intensity graph that every point intensity has specific x and y.
Maybe now it is more clear. I attach my vi's maybe you can help me.
Thank you
Attachments:
AI+plot.vi ‏90 KB
AO.vi ‏63 KB

Creation of Z reports for client adding two more column that is Purcahse order and delivery dates with Internal order wise

HI Experts,
Can any one help me to add two more column for standard report that is purchase order and delivery dates for Internal order wise.
But here problem is when i checked with ABAP team they said there is no standard functional module to add two column.
Please note below :
Selection criteria is: 1) controlling area
                              2) Fiscal Year
                              3) From date and To date
                              4) Plan Version
                              5) Order Group.
My client suggested : S_ALR_87012993 this tcode to run, but we suggested with S_ALR_87013019 as in this tcode we can get all the details
That is required output fields, as it is showing all details but on yearly basis, he wants this to be period wise and also Abap team is not able to find standard functional module in the second tcode as well.
Out Put fields to Pop up
1) Orders.
2) Budget
3) Actual
4) commitment
5) Alloted
6) Available
These are two additional column
7)Purchase order
8) Delivery date.
Require your help to know which all tables are included to extract above out put fields please help me.
Thanks in Advance.
Regards,
Sudesh

Hi Preeti,
Thanks for reply, can you please let me know is there any other way to show the output fields.
As my client is very specific to run the report on period wise, i also tried to execute the standard tcode S_ALR_87013019 and were we are getting all the required outputs to pop up but this is on year wise, but we can also check by period basis by clicking on order number and actual period basis where we can see period basis.
Also one more question,what is the commitment table which is popping up in this, please advise.
Thanks in advance.
Regards,
Sudesh

Setting intensity graph to blinking causes LV2012 to crash

Hi,
This VI crashes when setting blinking to TRUE, using LV2012, Win7 32 bit. I saw that this was a bug in 2004 , hasn't it been fixed yet? Or am I missing something obvious?
Thanks,
Danielle
"Wisdom comes from experience. Experience is often a result of lack of wisdom.”
― Terry Pratchett
Solved!
Go to Solution.
Attachments:
testBlinking.vi ‏16 KB

Yup, still broken LV2013SP1.
I'm not making any excuses for non-action, but I would image that blinking an intensity graph isn't something they get a lot of complaints about...
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Setting color table of intensity graph

Hi!
I set the attribute color table of an intensity graph to a rainbow
distribution of the colors, but now I'm not able to change the color
table with the markers in the front panel.
Do you know a solution?
Thanks, Markus

> I set the attribute color table of an intensity graph to a rainbow
> distribution of the colors, but now I'm not able to change the color
> table with the markers in the front panel.
> Do you know a solution?
>
Intensity graphs have two different modes for its color definition.
The first, typical one, is the Color array. It can be set using
either attributes or interactively and lets you define number/color
pairs that create either a smoothly interpolated or a banded color
gradient. The second mode is the color table. This is useful for
bitmaps or for cases where the color table has been custom generated
on the diagram. When using the color table, the Z scale is still
useful for determining which numbers map to the 0-255 range of the
color table. If you set the
Z scale to autoScale, it will find the
min and max of the data and set the Z to show all data mapped through
the color table. If set smaller, some of the values will map to the
first and last out of range colors. If set larger, it will map the
values to a smaller and smaller number of the colors in the color
table.
It sounds like you really want to be using the color array and not
the color table. The intensity graph automatically switches for
you when you write attributes to it, but there is a way to change
it back the the color array using a popup or attribute.
Greg McKaskle

Creating intensity graph from ywo sets of data?

Hi,
In my vi, I am getting two data set dependent on each other, i.e. amplitude(y) versus position(x). The data acquisition of x-y data happens in a for loop. This data is transferred outside the loop with index enabled. Outside the loop I want to plot an intensity graph out of these data, while z=amplitude, x=position,y=not important, say index. I don't want simply to transfer the amplitude data outside the loop and connect the 2D array of amplitude to the intensity graph. I want to preserve the position information in the intensity graph. How can I do this?
Thanks

Here is a link to a posting that may have been yours also. Just some ideas I had. I hope it can help you get started somewhere.
J.R. Allen

When I plug my ipod in I am able to add song to it but the tab that says "on this ipod" no longer shows up so I cannot remove things from my ipod or anything like that. How do I change this weird setting?

When I plug my ipod in I am able to add song to it but the tab that says "on this ipod" no longer shows up so I cannot remove things from my ipod or anything like that. How do I change this weird setting? On other computers this shows up fine so it is clearly a problem with itunes and not my ipod.

Programmatically disabling/enabling cursor in intensity graph

Hello all,
I am building a LV interface (LV2011) for a stepper XY stage. The system "scans" a surface, displaying it on the graph. I set up to cursors to zoom into a region of interest (ROI). Pressing a button resizes the scales to the ROI (zooming in on the area). Sections of code move the XY stage, and read a device. When done I want to zoom into a ROI and use a THIRD cursor to manually move the XY stage. I have this working with TWO graphs, based on the "region of interest.vi" I found in the dev zone.
What I would like to do is have a boolean toggle controlling ONE GRAPH between setting min/max (cursors 0 and 1) and manual stepper position (cursor 2). If cursor 2 is visible I want cursors 0 & 1 not showing and visa versa. Can I do this?
I attached the example - bascially what I did was add a cursor to the 2nd graph, grabbing the XY vales and sending to the stepper controllers. Works great! I am trying to "combine the two" by resizing the orig graph with a button click (works fine) and then click another button to show the XY stage cursor (and hiding the min/max cursors) - thats the brick wall
On a seond note - controlling a XY stage using the intensity graph's cursor is really nice; however it would be great if I can control the cursor similar to a slider's "coerce" - has anyone done this? I assume I have to write a routine in the event that performs some modulo function. Just curious!
Thanks,
Steve
Solved!
Go to Solution.
Attachments:
roi.llb ‏40 KB

Your exmaple works perfect. Howver I am having probs with Val(sngl) on the XY graph. On the example you gave, lets say I move the cursor with the mouse - event fires, everyone is happy. If I move the cursor with CODE - nada. I even read the "Value" of the graph and wrote it to "Val(sngl)" to try to fire the event. How does one force a trigger on an XY chart when you move a cursor (say cursor idx2) using code?
Better yet - why when I read the Val and write to Val(sngl) does the event not fire??? I have been searching for a basic XY table with sensor -type project but havent found one yet. Everyting works great - draginng the cursor moves the XY stage. Now I need to do the auto-scan part Use code to place the cursor - trigger the even that moves the stage.
Thanks
Steve
Attachments:
XY_Stage_Rev8.vi ‏53 KB

Fix axes in intensity graph with cursor

Hi all,
I try to use the intensity graph as an xy-input device. The user should be allowed to drag the cursor to enter the value. However, the user can always move the cursor outside the plot area, which causes the corresponding axis to rescale. I want to have strictly fixed upper and lower limits. Is there any way to achieve this? One possible solution would be to reset the min/max values every time the cursor was moved (and coerce the cursor position back into the range). A simpler approach would be appreciated!
Regards,
Matthias

> I try to use the intensity graph as an xy-input device. The user
> should be allowed to drag the cursor to enter the value. However, the
> user can always move the cursor outside the plot area, which causes
> the corresponding axis to rescale. I want to have strictly fixed upper
> and lower limits. Is there any way to achieve this? One possible
> solution would be to reset the min/max values every time the cursor
> was moved (and coerce the cursor position back into the range). A
> simpler approach would be appreciated!
>
You don't say what version of LV you are using, but if it is relatively
recent, right click on the graph and go to Advanced and uncheck the
option to have Cursors Scroll Graph. The user can still drag and
release the cursor und
er the edge of the graph, but this will not change
the scales. You can pretty easily filter cursor points that are out of
range and even write back to the cursor value if you need to. I believe
that if there is data in the plot and the cursor is set to lock to the
plot, then it cannot be dragged outside the data either, and that is
another solution.
Greg McKaskle

Image processing from .txt file onto an intensity graph

I am doing a mini project in my class and I was wondering if anyone could help me. It about image processing but I am bit stuck.
Heres the idea:
"An image is really nothing more than a 2D array of data. The value of every element in the array corresponds to the brightness of the image at that point.
In this project you will create a VI which loads a 2D array of data and then displays it on the screen using the Intensity Graph. Three example files (boats.txt, gordon.txt and parrot.txt) are available on the module webpage that you can use. However, you can also use any other black and white image you like, but will need to convert it to a “text image” first. To do this you can use some software called “ImageJ” which is available on the computers and is free to download.
You can vary the brightness of an image by adding the same value to every element in the array.
The contrast of an image is adjusted by multiplying every element in the array by the same value. Using numerical controls and simple array mathematics, you should adjust the brightness and contrast of your displayed image.
Some other ideas that you could try with image manipulation are:
o Invert an image (change black to white and white to black)"
First I am having problems putting my picture onto the graph. It is in the write file but the colours are not correct and the image has rotated 90 degrees. I will upload my VI so far when I get back onto my computer.
Would really appricate the help! Thank you for reading

Hi charlthedancer,
Here is an example to get you started.
Kind regards,
GajanS
Attachments:
Test.vi ‏14 KB

JDeveloper IDE simple setting problem

Hi,
Recently we switched to JDeveloper from Visual Cafe .I have a simple setting problem.How can I set the options so that IDE gives, the core java classes and packages,and our application classes and packeges, prompts in imports as well as in code.Where to set the options.
eg: when I write
import java. it should prompt all the pakages.
Thanks in advance.
-Gopal
null

I am not sure I understand what you are requesting, but ...
You can configure JDeveloper projects to include various libraries by default.
This is done by selecting menu Tools | Default Project Properties.../ Libraries tab.
You should define a library for your classes.
You can import any of the packages / classes from all the libraries which your project includes.
It would be incorrect for a tool to automatically add a bunch of import lines at the top of every file because each file should import what it needs and just as importantly, not import what it does not need depending on the component type (e.g. a servlet should not include javax.swing.* ).
An easy way to import elements into JDeveloper is to type in something like:
import java.
// and then type in Ctrl Space
and this launches the package browser, you can select packages or classes to import.
You can also do this at the variable declaratiton point such as typing in:
foo() {
Frame x
// Press Control Alt Space
and this will correctly change the type (Frame) to the type you select in the package browser and add the import statement.
-John
null

Change colors of individual pixels on intensity graph?

I would like to be able to change the color of a set of individual pixels within an intensity graph, to blue for example, while leaving the color table otherwise as is, for example, gray scale. The change to blue would be based on location, not on current gray value. I think I can accomplish this using the mask fx with picture controls, and then convert to intensity graph. Is there a more direct way? A good example to demonstrate this capability would be just using a 'mouse down' event on an intensity graph to change the color at the mouse location. Any thoughts are appreciated.
Sincerely,
Don

Yes, seems to work fine .
If you have LabVIEW 8.0, there is another possibility. There is a new property that allows drawing any pictures or picture elements on your graph area. Of course you could draw individual pixels, but nothing prevents you from e.g. drawing circles, squares, odd shaped areas, arrows or event text. ... Anything you could do with a plain picture indicator. One example that ships with LabVIEW 8.0 is Envelope.vi, see image.
Message Edited by altenbach on 06-12-2006 07:31 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
envelope.png ‏32 KB

Trying to add a simple applet to a web page

Well, I was trying to add a simple applet to a web page(php nuke Home section), it didn't fin my applet, so I changed it and added it to a simple html file to make it as simple as I could get it.
This is the code in the html file:
<applet code="usblock.class" width="400" height="400">The browser doesn't support applets...</applet>The directory: www/usblock.html & www/usblock.java & www/usblock.class - As you can see the files are all in the same directory/folder.
usblock.java code:
import javax.swing.*;
import java.awt.*;
public class usblock extends JApplet
     public void init()
          JPanel p = new JPanel(new BorderLayout());
          p.add(new JLabel("Heisann"));
          add(p, BorderLayout.CENTER);
}now as I open the html local on my computer, it workes. As soon as I open the usblock.html from my website, it doesn't.
It gives me this error here:
load: class usblock.class not found.
java.lang.ClassNotFoundException: usblock.class
     at sun.applet.AppletClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadCode(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed.
     at sun.applet.AppletClassLoader.getBytes(Unknown Source)
     at sun.applet.AppletClassLoader.access$100(Unknown Source)
     at sun.applet.AppletClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 10 moreSo I thought it was that it couldn't find the .class file. Well, I went through the How To add applets that I found somewhere on sun.com. It had exactly the same as I had.
Im figuring the problem is something easy and not hard to detect. But my eyes can't find it somehow. This is my second time trying applets, and I kinda forgot how I got it to work the first time.
Im just glad for all the help I can get.
Thanks a lot.
LordSvae
PS: Sry for the size of the post, but I'm not sure how much info I was supposed to put in here, so I thought the more the better, right? :S

Hii,
I doesn't know the solution but same kind of problem is come with me & I found that the problem is of Path i.e. you need to set a codebase attribute . For tempory solution what i do i simply copy the .class file in to html file dir.

How does LabVIEW Render the data in 2D Intensity Graphs?

Hello,
I was hoping someone could explain to me how LabVIEW renders it's 2D intensity data. For instance, in the attachment I have included an image that I get from LabVIEW's intensity graph. The array that went into the intensity graph is 90000x896 and the width/height of the image in pixels is 1056x636.
Something I know from zooming in on these images as well as viewing the data in other programs (e.g. Matlab) is that LabVIEW is not simply decimating the data, it is doing something more intelligent. Some of our 90000 lines have great signal to noise, but a lot of them do not. If LabVIEW was simply decimating then our image would be primarily black but instead there are very obvious features we can track.
The reason I am asking is we are trying to do a "Live Acquistion" type program. I know that updating the intensity graph and forcing LabVIEW to choose how to render our data gives us a huge performance hit. We are already doing some processing of the data and if we can be intelligent and help LabVIEW out so that it doesn't have to figure out how to render everything and we still can get the gorgeous images that LabVIEW generates then that would be great!
Any help would be appreciated! Thanks in advance!
Attachments:
Weld.jpg ‏139 KB

Hi Cole,
Thank you for your understanding. I do have a few tips and tricks you may find helpful, though as I mentioned in my previous post - optimization for images or image-like data types (e.g. 2D array of numbers) may best be discussed in the Machine Vision Forum. That forum is monitored by our vision team (this one is not) who may have more input.
Here are some things to try:
Try adjusting the VI's priority (File»VI Properties»Category: Execution»Change Priority to "time critical priority")
Make sure Synchronous Display is diasbled on your indicators (right-click indicator»Advanced»Synchronous Display)
Try some benchmarking to see where the most time is being taken in your code so you can focus on optimizing that (download evaluation of our Desktop Execution Trace Toolkit)
Try putting an array constant into your graph and looping updates on your Front Panel as if you were viewing real-time data. What is the performance of this? Any better?
The first few tips there come from some larger sets of general performance improvement tips that we have online, which are located at the following links:
Tips and Tricks to Speed NI LabVIEW Performance
How Can I Improve Performance in a Front Panel with Many Controls and Indicators?
Beyond that, I'd need to take a look at your code to see if there's anything we can make changes to. Are you able to post your VI here?
Regards,
Chris E.
Applications Engineer
National Instruments
http://www.ni.com/support

Add a simple setting to Intensity Graph that draws grid on top of data

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