[postgis-users] WGS84 Representation

[konfri at gmx.de]

Hey,

I'm trying to store WGS84 coordinates as points. A sample is:

5043.7922;N; 01324.4940;E;

So, if I store this coordinates with POINT( 5043.7922 01324.4940), the column contains:

0101000020000000002E90A0F831024C40C6E1CCAFE6602840

In addition, I discovered that google uses the WGS84 coordinate system too, but with a different representation. According to http://www.tma.dk/gps/#converttodec, I converted 5043.7922;N; 01324.4940;E; to:

56.01715 12.18926

I tried to visualize both representations on google maps, but just the decimal r. is displayed properly. There is also an other representation degree, minutes, seconds. I'm confused since all three representations seem to belong to the same WGS84 coordinate system. Am I right? So, what is the reason for having multiple representation of the same coordinate system. 

Would you suggest to persist the decimal representation? Or do even all representations end up in one internal representation as mentioned above?

Thanks for your help, unfortunately I just started with the exiting GIS topic.

Thanks.

Kon


-- 
GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01