Hi All, This is the projection information of a single Landsat scene in ENVI, GRASS and using gdalwarp. GRASS and gdalwarp gave somewhat similar output but ENVI is totally different. I have been informed that the projected image from ENVI is correct as verified from the earlier work.
Original data (in Sinusoidal Projection) ------------------------------------------------------ Corner Coordinates: Upper Left (-10801805.198W, 4130102.079N) Lower Left (-10801805.198W, 3971252.079N) Upper Right (-10642955.198W, 4130102.079N) Lower Right (-10642955.198W, 3971252.079N) Reprojected in GRASS GIS (Lambert Azimuthal Equal Area, Datum: WGS84) ---------------------------------------------------------------------------------- N: 5564460 S: 5185590 | E: -5451390 W: -5762490 Reprojected in ENVI (Lambert Azimuthal Equal Area, Datum: WGS84) ------------------------------------------------------------------------- Corner Coordinates: Upper Left (-2265106.681W, 1064601.383N) Lower Left (-2265106.681W, 830181.383N) Upper Right (-1960126.681W, 1064601.383N) Lower Right (-1960126.681W, 830181.383N) Reprojected using gdalwarp (Lambert Azimuthal Equal Area, Datum: WGS84) ---------------------------------------------------------------------------------- Corner Coordinates: Upper Left (-5148766.236W, 3000477.570N) Lower Left (-5148766.236W, 2724274.973N) Upper Right (-4826973.503W, 3000477.570N) Lower Right (-4826973.503W, 2724274.973N) Any comment is appreciated. Uttam. On Sun, Sep 27, 2015 at 1:48 AM, Markus Neteler <[email protected]> wrote: > > On Sep 26, 2015 1:00 AM, "Uttam Kumar" <[email protected]> wrote: > > > > Thank you all. It worked. > > > > However I noticed that the projected boundary values of N, S, W and E in > GRASS are not same as the values obtained from projecting the same image in > ENVI image processing software and in gdalwarp. > > > > Projection of the scene in Lambert Azimuthal Equal Area is similar (but > not exactly equal) in GRASS and gdal, but in ENVI it is totally different. > I just did the comparison to see if things are similar from different > softwares in case they have to be ported to other platforms. > > Can you print the projection information in both GRASS (g.proj -p or -w) > and ENVI? Are they really the same? > > Markus >
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