Global Mapper v25.0

NGO_1948_Norway_Zone_3 vs NGO 1948 (Oslo) / NGO zone III

STH
STH Global Mapper UserTrusted User
edited February 2008 in Projection Questions
I see that you have implemented all the zones from "NGO 1948 (Oslo) / NGO zone III" (ie EPSG","27393" ++). However it seems that the correct one I need is all the zones from the "EPSG","102103" (all zones I, II, III, IV, V, VI, VII, VIII).

Looking at:
http://spatialreference.org/ref/epsg/102103/prettywkt/
and
http://spatialreference.org/ref/epsg/27393/prettywkt/

I see that the parameters are moved within the GEOGCS["GCS_NGO_1948",
. Not sure if globalmapper supports this and thats why there is an error?

Is it possible to add support for the 102103 (I - VIII) or correct the 27393 (I - VIII)?

Comments

  • global_mapper
    global_mapper Administrator
    edited February 2008
    I took a look and discovered that the existing codes supported (27391 - 27398) should be for the NGO 1948 zones based on the Oslo prime meridian, but they were actually using the Greenwich meridian but with shifted central meridians in Global Mapper, so the results were basically the same.

    I have gone ahead and added support for a NGO 1948 datum centered on the Oslo meridian in Global Mapper and corrected the existing EPSG codes as well as added support for the 102101 to 102108 codes for the Greenwich based zones.

    I have placed a new build at http://www.globalmapper.com/global_mapper9.zip with the change for you to try. Simply download that file and extract the contents into your existing v9.xx installation folder to give it a try.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com