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Posts posted by jorourke

  1. Thanks for the insight. In my version, I display multiple points per channel per loop. Application records 120 channels at 2048 samp/sec so display every point is not possible. When I wire up the output of the array subset vi which is a 2 dimensional array, it will give me an error. Is there a work around?

    Do you know why this does this happens?

    Thanks John

  2. Hi

    My application allows the user to change the number of input channels that a chart displays during runtime. When the number of channels vary the X Scale range values reset to zero for the chart. Is there a way I can stop this?

    I have include a simple demo program showing this issue. When the var number of channels is changed the X scale of Variable Channel Chart is reset.

    Thanks John


  3. My project is starting to use tables and I have a couple of questions about controlling them in the front panel.

    1.) Is there a way to make a labview table only accept numeric input into a table?

    2.) In my example, the user can control the number of rows and columns. When they use this feature, the table size changes. Is there a way to disable this autosize property?



  4. Hi

    My application displays 24 channels of data in a chart. I have the update mode set to sweep. Is there a way I can change the color of the red line that precedes the new data? I have looked all through the property nodes of the chart buy have only been able to find update mode selector. Is changing the color possible? Could I get rid of the line all together?



  5. Hi

    In a waveform chart how is grid spacing defined? I have an application where the user would like to view the data without any grid lines 90% of the time. For ease of quantifying, he would like to be able to turn the grid lines on and off and be able define the grid spacing from the front panel. Turning the grid on and off is easy using the chart properties, YScale.MnrGrdColor and YScale.MajGrdColor. How would I go about changing the spacing of the grids?



  6. Yes, that is what I want to do with one change. Instead of being a Boolean data type being passed, it is a cluster containing controls and text.

    My problem is that the new subvi does not know how to access the property nodes of the text and controls that are in that cluster. Is there a way I can type cast the reference in the new vi to be able to access the property nodes of the items in the cluster?

  7. Hi

    I am trying to modify a cluster of controls that is passed by to a sub-vi. The cluster contains will have text, color and position modified. This should be done dynamically during runtime. The number of controls is also a variable, althought the max is set at 16. I know how to pass a reference of a single object to a sub-vi but I cannot figure out how access the clusters individual components in the sub vi. Does any one have example code that I could look at which would explain this to me. I have include a little vi of the interface I am trying to create.



    Download File:post-676-1097537194.vi

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