Is there a limit to number of data points displayed?

[PaulSteinmeyer]

I'm using the PC version of ArcPad 8.0 (SP4) with a VBScript and an extension DLL.  The extension reads external sensors and, through the VBScript, saves the data along with the position into a shape file each second as triggered by a timer within the DLL.

After some amount of time, usually at least 30 minutes or 1800 datapoints (although it has gone longer) ArcPad crashes.  After more than a week of intense debugging I believe I've been able to demonstrate it isn't a problem in the DLL or the script.

To test this I started a run yesterday afternoon, then minimized ArcPad.  Around noon today I checked it and all was good (about 70,000 data points).  I tried zooming on the screen and ArcPad immediately crashed.  Oddly enough the Windows Mobile version does not crash, but it is strongly desired that a PC be used.

So, is there a limit to how much data can be effectively displayed?  Is this project pushing ArcPad beyond it's capabilities?

Best Regards,
Paul

[RobChouinard]

I've had very similar issue with ArcPad on a laptop crashing when logging points from a GPS. I spent months on it and it just boiled down to something happening when ArcPad is reading a shapefile to be drawn that is also being written to (maybe at the same time it is being written and read).

My GPS was collecting a point once every second and it was very random when ArcPad would crash. The only thing that was certain, it only did it when the map would refresh and draw the newly collected points. If the map never refreshes, ArcPad wouldn't crash. No changes in my code could fix this.

The good news: ArcPad 10's map drawing has been reworked and the problem is completely gone now. So I suggest upgrading to ArcPad 10 if you can.

-Rob