X
PrevPrev Go to previous topic
NextNext Go to next topic
Last Post 10 Jan 2008 10:34 AM by  anon
ASTER projection question
 1 Replies
Sort:
You are not authorized to post a reply.
Author Messages

anon



New Member


Posts:
New Member


--
10 Jan 2008 10:34 AM
    Hi--I have some ASTER imagery that I'm using for a research project. It is my understanding that the ASTER imagery is projected using the WGS 84 ellipsoid, and when I bring it into a product like ArcGIS or Grass, this is what I get. However, for some reason when I import the image into ENVI, it registers as 1927. When I reproject in some other software package back to WGS84, the projection is misaligned. Could anyone tell me why the ASTER imagery defaulting to 1927 projection? Thanks very much! Steve

    MariM



    Veteran Member


    Posts:2396
    Veteran Member


    --
    10 Jan 2008 10:34 AM
    What version of ENVI are you using? In both ENVI 4.4 and 4.3, ASTER data is referenced with the WGS-84 datum. In any case, you would not want to reproject the image with a new datum, you would want to edit the header to reflect the true datum that the image is in. You can do this via Edit ENVI Header ->Edit Attributes ->Map Info... Change Projection and select the correct datum, which should be WGS-84.
    You are not authorized to post a reply.

    Forums Products ENVI