Hexagon Geospatial
MENU

ERDAS IMAGINE

Discuss and share topics of interest using ERDAS IMAGINE the world’s leading geospatial data authoring system.
Showing results for 
Search instead for 
Do you mean 
Reply
Highlighted
New Contributor
Posts: 3
Registered: ‎08-26-2016
Accepted Solution

Raster reprojection using Grid Shift File

Hi everyone,

 

We have problem to reproject images from UTM 34N projection (WGS 84) to our local projection -Transvese Mercator (Bessel elipsoid).

 

We have global parameters for transformation (7 parameters) from WGS84 to our Datum.

We created custom datum in Bessel spheroid in spheroid.tab with these parameters and reprojection works fine

 

Also, we have two grid shift files (from Republic Geodetic Authority) with corections for X and Y axes with *.grd extensions, but we are not sure how to use this file in Imagine.

We have tried everything described in Imagine documentation, but we can't even start reprojection if we select custom created SURFACE datum based on our shift files.

 

Is there any example of Grid Shift File that can be used by ERDAS Imagine

 

Here is example of our grid shift file for X  corections.

 

DSAA
335 443
7330000 7664000       
4676000 5118000
-2.199 1.938
 1.70141e+038 1.70141e+038 -0.594 -0.7636317931404248 -0.8034032267240883 -0.8512612755587443
-0.8583685273961227 -0.8839122682793533 -0.893864837023883 -0.9050949092442463 -0.9207510435915166 -0.9419644929386921 -0.9755449226477218 -1.002664309673755 -1.024223544129892 -1.031885423236891
-1.025876910269664 -1.014072729143595 -1.053654819838707 -1.070667727291563 -1.100215093563694 -1.200573390487456 -1.266282570600063 -1.331761180081558 -1.392728216261435 -1.392664611931049........................................

 

Regards,

Mladen

 

 

 

Anonymous
Posts: 0

Re: Raster reprojection using Grid Shift File

Hello Mladen,

Can you please create a service request for this problem?  Technical Support needs to look at his one for you. 

 

Thank you,

Cheryl Brantley

Do you need immediate support?
If you encounter a critical issue and need immediate assistance please submit a Service Request through our Support Portal.