user draws data onto graph and then run system the the data on graph

[nmul]

hi

im doing a college project in labview 7.0.I would like your help to know if there is a control in lab view that allows the user to specify the data for a system by drawing it on a graph while the program is running. The data then will be taken from the graph to controll temperture in a chamber?

 thanks for your help

[nyc_(is_out_of_here)]

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@nmul wrote:

hi

im doing a college project in labview 7.0.I would like your help to know if there is a control in lab view that allows the user to specify the data for a system by drawing it on a graph while the program is running. The data then will be taken from the graph to controll temperture in a chamber?

 thanks for your help

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I would think a 2-d array with the different temperatures and dwell times would work.

[SachaE]

Hi,

  you can actually use a graph as a control if you're sneaky.

Add a cursor, and then track the position of the cursor in a loop, or the position whenever a button is pressed, building up an array of positions as you go. You can even draw this back on the graph if you like.

The tricky part is when you go inbetween to existing points, assuming time only ever goes forwards, then you need to re-order the points in the array.

Hope that helps.

Thanks

Sacha Emery
National Instruments (UK)