> I'm trying to create a VI to control a syringe pump using Labview 7.0. > I was hoping to be able to input points on a front panel graph (using > the curser), have labview fit the points to a curve and control the > syringe pump to achieve the desired pH profile. Is it possible to use > the curser to input data points from the front panel?
There used to be an example that shipped with LV, but it seems like it is now available on the web site at http://sine.ni.com/apps/we/niepd_web_display.DISPLAY_EPD4?p_guid=B45EACE3E0F156A4E034080020E74861&p_node=DZ52038&p_submitted=N&p_rank=&p_answer=&p_source=External I didn't look at this one, but typically, they read the cursor position based on either event or time and enter that into the array passed back into the graph. You can style the cursor to hide crosshairs, make a different point style, etc. You can either have the user draw and collect many points into the array, or you could have a button to add cursors and let the user place N cursors along the curve as control points. It might also be worth searching around for other people's editors as with a little time, they can be quite specialized and quite nice. Greg McKaskle
