stationary graphic grid of waveform

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• The graphic evolution of waveform details updated?

  Hi all, hope everyone is having a wonderful July 4.

  -Very well, so I'm new to labview and find my things around simple things well enough, but not having never taken an interest programming, Im a little behind in the logic of the machine, so I thought I would ask here.

  EDIT: using labview 2009.  Vision package

  The research that I do is to analyze the electron Speckle Pattern Interferometry (ESPI) images and their fringes to observe weaknesses points/potential fracture in different materials and others.  I made a simple VI which allows me to draw a line on the image the ESPI and exit of the intensity of the light to a waveform chart to make it easier to objectively determine the size of the area (area where the fracture is more likely to occur) plastic.

  What I would like is to be able to draw or first set the coordinates of the line, then somehow, be able to move vertically - using just my mouse or a digital controller - and have the graphic waveform updated in real time, as I do.

  Any suggestions?  Ive attatched my programs, one called "line.vi" uses digital input to determine the coordinates of the line.

  Also, since I did not sem to be able to set the bitmap images, Ive uploaded a sample of image here http://img594.imageshack.us/img594/3566/espiimage.png I don't know why imageshack converted into a PNG image if

  Thank you all

  Hi itschad,

  have you read the context-sensitive help for the chart? Here we show what kind of data you connect to draw more than one line on the graph of some...

  "Does a weird issue where once I select the line, the intensity profile keeps itself adding time and time again on the end of the table, so a table that could have initially 100 datapoints, stop of is longer and longer."

  That's how cards work. They keep a story (that you disable constantly). You can set the size of the history buffer. If the default value of 1024 points, it's too much for you, you can cut it to 100 - it is just a right click away... Otherwise, you must use a graph as a graph plots only the points that are currently wired to him (it does not keep a history of previous values).

• Graphics update rate waveform

  Hello

  I have a request I'm two signals to measure voltage in and feeding these signals to the mask and limit test VI to check if the signals are at your fingertips.

  I want to have 1000 samples7sec (1 kHz sampling frequency). The software works well but the only problem is with graphical waveform updated. If I run the loop of producer with 1 ms, in the log file, I have 1000 samples/s, BUT I see nothing on the waveform table (the second graph on GUI). I mean, I do not see the tolerances and my i / p signal.

  When I run the loop of producer with 2 ms, I can see signals on form of wave, but in the log file table, I have 500 or lower than that of the samples/s. I tried to change the rate of smapling but without success.

  Any help would be appreciated.

  see the attached example VI

  1. with a continuous sampling, you do not want to set the size of buffer.  Just let him be the default (which is quite large).

  2. you really do not want a waiting in your loop of producer.  Instead, you must inform the DAQmx Read to read something like 100 samples.  Waiting for the upcoming data will limit your loop rates.

  3. your second table is actually a chart.  A graph has the whole story and shows exactly what you gave him changed.  So, if you were trying to get all of the samples every 1ms when you are sampling at 1 kHz, you get 1 sample buffer playing and only 1 sample will be on the chart, making it appear as there is nothing in the graph.  When you go to 2ms, you get 2 samples to appear on the chart.  So I think you want to replace it with a chart.

• Import the graphic image of waveform

  Hello

  I would like to import a waveform saved in a format (PNG or JPEG) image and display them in the waveform graph. I checked with the property node 'images of conspiracy', but I cannot specify the path of the image using this property node as in my case, the image is modified with different experiences to compare the two waveforms (a wave is in the format of the image and the other comes from an instrument of the oscilloscope). Could someone please suggest how I could do.

  Best regards

  Julien

  The entry for this property node is an image, not a file.  Use playback JPEG File.vi under graphics and sound to open the file, then draw flatten Pixmap to transform the image data, a photo.

• Graphic recording of waveform

  Hello!!!

  I have a problem... In my project I have a graph of waveform that it would be useful if the user wants to... How can I save a button, with a SPECIES name by preesing? just save the chart, with perhaps a .jpg ending?

  Thank you very much!!!

  (if it is a possible answer with pictures!)

  Hi Guillermo,.

  This KB articlemight be useful for you.

  Best regards.

• How to force the colors of graphics path of waveform?

  Hello

  I have a problem forcing my WaveformGraphs to have colours in the specific field. I changed the properties several times: he returned to another color when I restart. I tried the Plot color with active Plot property node: it says it can not work (maybe I didn't do it well). I did the graphics of type defs, changed their properties, it is their default value and then saved. I need the 3 graphs have the same colors of conspiracy because they are related.

  Do you have any tips for me?

  Here's a way to do it. This will outline the first 4 colors in each graph plot.

  (Get the references of your chart and put them in a table for the entry.)

  

  Steve

• Integrated graphic how of waveform of CSV data

  Hello

  I had the waveform of the comparison of two methods as follows.

  

  As we do a right click on the waveform graph and export the data to Excel and CSV format.

  a CSV file is generated.

  I want that same CSV file can be used to display the waveform graph, as is (for later analysis).

  I am using the following Code, but not getting results.

  

  Please suggest changes, the data file CSV and VI is attached for reference.

  Concerning

  MMS79

  
  

• How to calculate the polynomial graphic adjustment of waveform

  Hi all

  I am new to lab - view so would need a little assistance in one of the problem I have right now.

  My problem is: how to calculate the polynomial graph of waveform data adjustment? I need to convert the waveform to XY graph data, and then use the polynomial vi made integrated to calculate the fitting?

  Detail: My problem is that I have waveform graph, I calculate the vertices and the Valley, but because of the noise, my peaks and Valley detection is sometimes not exact, so to smooth the chart that I must apply the polynomial fit.

  If anyone can help me in this, I'll be very grateful.

  Thanks in advance

  Hi Omar,.

  have you seen the suggestion of Lynn above?

  You already have the values of Y (your table). Now, you need build the table of X as indicated, only to replace the value of dt with your spacing from point to point. Somewhere in your code, you know that the value that you have an x-axis indicated in milliseconds...

  

• Several graphic grid XY

  I have an XY Chart with several Y axis and I want the the Y 3 to align axis grid lines.

  But I also want to keep the AutoScaling function.

  Is this possible?

  

  Hi, TBN,.

  Nope...

  Use autocaling and disable grids (for at least two of your axis Y) or make the scale based on your own algorithm that keeps the lines of the grid 'aligned '...

• Graphical evolution of waveform changes during execution

  Hello

  I'm just started learning Labview graphical programming. It's so interesting that text-based programming.

  The first issue is of course acquire analyze and display. But on the screen how to change the X axis and Y, scale of the axes during execution values.

  Maybe you should b a little more clearly what kind of values you want to change. (range, offset, multiplier, etc..)

  For example, to change the interval-y, yscale user property...... minimum or maximum range. The interval-x is a little more complicated, because you're dealing with a graph, when the x offset the changes automatically the history buffer is updated.

  Of course you must also make sure to disable autoscaling, else it will be for the next update.

  You can also change the formatting of the x axis. at the moment you show zero decimal digits. Also an axis 'style' with a few values more would be better.

• How can I get rid of this pesky tool graphic grid?

  Hi so when ever I I click on tool grille on the accident and it shows which frame cubic huge Di that will not disappear how to delete or Cancel command ive tried D or Ctrl Z and it will not how to delete it suggestions?

  You mean that the Perspective grid?

  Cmd I Shift Shift Ctrl (Mac) I have (Win)

  Or view > grid view > hide grid

• How to set the minimum value of a graphic waveform window?

  I have a graphics property of waveform "minimum value", but the graph is not take the value that I gave him. He tends to zero, as well as the first two sliders that I put on the graph. The maximum value "will be" no problem, just like the second slider value. Everyone knows about this problem? Here's a screenshot...

  Is there a reason why my chart does not have what I have to say?

  Thank you

  Sometimes you may have problems if the new minimum is higher than the maximum of old.  Try to write at least again in another node in property after you set the maximum value

  Without seeing your VI and some parameters of the example, (old max and min) new max and min, it is otherwise difficult to say.

• Pull graphics individual of a multiple waveform graph?

  Hi all, is there a way to the analysis of individual graphics of a waveform based on a description given?  I know that the wave doesn't than the Y, t0 and attributes t, but there must be a way to do this.

  The user enters a group of data by channel.  I want to be able to do is isolate one graph of the waveform based on the tag name of the channel and show this on a separate chart.

  I've attached screenshots taken from view of the code where the plots are generated and the center of user input.

  I would appreciate help.  Thank you!

  LabVIEW 2012

  Windows 7 64 bit

  Hello

  You can do it. When you get the name of the attribute (as in my first attachment), you can compare it with the name of the desired tag, using the functions in the range of comparison.

  If your match is found, then a case structure and write the waveform in a chart.

  Otherwise, proceed to the waveform through a shift register and write in the graph.

  I have attached a VI in LV 2010.

• Indicator of waveform data dashboard with multiple locations

  I have a chart in waveform with multiple locations on my main VI running.

  I use the Application Dashboard data 2.2.1 on my Ipad to monitor table of wave shape of my running app.  I placed a marker on my Ipad and also related waveform with my waveform array variable.  I can't play my data dashboard application because it shows unable to connect to the server.  I noticed that it is because of multiple plots being plotted on my table of waveform.

  I could only play the App data dashboard when it is just a single parcel related to an indicator on the App.

  My question is if it's possible to have a graphical indicator of waveform on a data dashboard that has several plots being plotted and not only a single square, and how to configure it?

  Thank you.

  Click on Bravo and select as an accepted answer.  You are welcome.

• Table of waveform and digital signal 2

  Hello

  I need to see 2 or more digital graphic USB6008 of waveform input signal, but each signal must be different offset, it is possible?

  Just add a constant offset to the second signal between the Boolean value to (0,1) and the fiber node.

  Lynn