Skip to main content

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [List Home]
[udig-users] BeeGIS - GPS Tool - Lon error

Hi, 

I've just installed udig 1.1.1 with BeeGIS& Jgrass plugins. On a Windows Tablet PC.

Using the GPS Tool, I was also able to connect successfully with a Bluetooth GPS (L1) .

The problem is that BeeGIS gets the wrong position from GPS (WGS84)!

For example:

Here is the NMEA data received from GPS shown on “GPS Settings”:
 
$GPGGA,094300.000,4050.282133,N,00828.634375,W,1,8,0.85,211.388,M,51.205,M,,*4D
$GPRMC,094252.000,A,4050.282134,N,00828.634365,W,0.009,234.14,020709,,,A*4D
This seems to be the right Gps connection port.
 
And it shows on the GPS View tab: 

Northing = 40.83803583333336
Easting = - 7.8105705333333
 
That has a incorrect Easting!!! 

This reflects on everything done with GPS Tool: Center the map, automatic gps points, gps data logging, etc.


To my knowledge, based on the NMEA data values, the WGS 84 position should be:

N = 4050.282133 > N = 40 d 83.80356 s
W = 828.634375 > W =  8 d 47.72396 s
 
N is correct but W is totally wrong!

I know for sure that my WGS 84 lon position (Easting) is in fact -8.4772

The uDIG project Map is associated with a CRS = WGS 84 (EPSG=4326)
The line layer properties Projection is the same.

I have also tried several other CRS, and know they influence the North / Easting shown values.
 
Please, anyone can give me a clue about how to solve this problem?

Thanks in advance!

Regards,
Ricardo Pinho


      ____________________________________________________________________________________
Veja quais são os assuntos do momento no Yahoo! +Buscados
http://br.maisbuscados.yahoo.com


Back to the top