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ArcPad 8.0: GPS forum

WisCRS in ArcPad   Lanny Schnipper May 14, 2009
Re: WisCRS in ArcPad   Melita Kennedy May 26, 2009
Re: WisCRS in ArcPad   Melita Kennedy Jun 08, 2009
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Subject WisCRS in ArcPad 
Author Lanny Schnipper 
Date May 14, 2009 
Message The following issues have been confirmed in both ArcPad 7 and 8:

We have worked with many ArcPad users in Wisconsin who use the WCCS (Wisconsin County Coordinate System). This has been working fine with ArcPad for quite some time. Now there is a new system in Wisconsin: WisCRS (Wisconsin County Reference System). I've attached the summary report of this system.

Some ESRI users have migrated their entire GIS to this new system. In fact, new ArcGIS now only has WisCRS PRJ files in the coordinate system folder and WCCS is gone.

ArcPad will check out the data to WisCRS and the map and coordinates in ArcPad match the GIS. Also, the projection properities in ArcPad match ArcGIS. However, once GPS is activated and positions are being read it is in Lat/Long and the two systems don't match and the two are not lining up...not even close. There is no "on-the-fly" conversion occuring which needs to happen anytime you are using anything but Lat/Long WGS-84 in the field. Going to the GPS position window and tapping on the position, changing to Map Projection yield "N/A".

It's like ArcPad cannot convert GPS's native format (Lat/Long) to WisCRS but can do so for WCCS.

Until a workaround is figured out, ArcPad users in Wisconsin may have a delay in migrating to the current WisCRS system.

Has anyone figured out a workaround or have any suggestions?

-Lanny Schnipper
Seiler Instrument 
  WISCRS_Final_Report_Oct06.pdf (opens in new window)
 
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Subject Re: WisCRS in ArcPad 
Author Melita Kennedy 
Date May 26, 2009 
Message Lanny,

I have a feeling the problem is only with Lambert conic-based definitions. The big changes between WCCS and WisCRS are:

1. GeoCRS changed from custom spheroid/ellipsoids to standard NAD83 (HARN).
2. Lambert zones changed from 2 standard parallels to 1 standard parallel + scale factor.

I'm currently checking with someone on the ArcPad team about it.

Melita 
  Melita Kennedy
ESRI Product Specialist 
   
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Subject Re: WisCRS in ArcPad 
Author Melita Kennedy 
Date Jun 08, 2009 
Message Lanny,

A developer did find a problem with Lambert when using 1 std parallel + scale factor. They hope to have the fix in the next service pack (out this summer).

Melita 
  Melita Kennedy
ESRI Product Specialist