I had some issues when I first tried to use LV 5.1's 3D Graph. The NI
applications engineer who helped me was great. Just wanted to share some
tips:
1: In LV 5.1 but not in LV 6: if the user reinitializes to default, the
3D Graph stops working!
NI: "that's because the reinitialize to default incorrectly sets the
graph's refnum to 0, which is an invalid refnum."
Work-arounds:
* use LV 6.
* customize the menu to hide the reinitialize to default option.
* don't show the menus when running so the user can't accidentally
reinitialize to default.
* use a different VI which will call VI Server to programmatically
reinitialize your VI to default.
2: In LV 5.1 but not in LV 6: the graph does not appear in the
executable! Fix: search you
r system for a "ole_lv5container.dll". It
should be located in the
...\LabVIEW\RESOURCE
directory or in the \LabVIEW\shared\LabVIEW Runtime\5.1\ folder. Place a
copy of this DLL in the same directory as your executable.
3: The 3D Graph will update more quickly if you:
* Reduce the volume of data you pass to it.
* Get the best hardware you can.
* Don't do anything else to compete for the graphics / CPU.
* Change the color depth. To my surprise, the screen updated faster at
16-bit color than 256-color. I suspect that the CPU has to dither the
colors into the smaller palette, and that slows down the update.
* Changing screen resolution (1024*768, etc.) also made 50% difference.
* Right-click the graph, choose Properties, & check the "Use 3D
Acceleration" and "Fast Draw for Zoom/Pan/Rotate" options.
These are my findings, your results may vary depending on h-w & drivers.
Mark
