Reprojection method used by ENVI layer stacking of rasters of

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Last Post 20 Jul 2018 11:52 AM by MariM

Reprojection method used by ENVI layer stacking of rasters of different projections

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Woodstonelee

New Member

Posts:2

19 Jul 2018 04:29 PM
Hi, I notice that ENVI's tool "Reproject Raster" needs to select a conversion parameter of Method from Polynomial, Triangulation and Rigorous. When I do "Layer Stacking" of rasters of different projections, ENVI automatically reproject the rasters to the same projection for me. But I can't find out what conversion parameter of Method the Layer Stacking uses for the reprojection. I seem to have no control over this reprojection parameter in the Layer Stacking. I have a few rasters that are reprojected either directly from the Reproject Raster or indirectly by using Layer Stacking. I want to make sure we have the same reprojection parameters used in the reprojection so that the reprojection results are always identical. Has anyone known the reprojection parameters used by the Layer Stacking? Thanks, Zhan.

MariM

Veteran Member

Posts:2396
Veteran Member

20 Jul 2018 11:27 AM
In Layer Stacking, all layers other than the base layer (first file added) is reprojected to the same projection as the base layer. Layer Stacking uses envi_convert_file_map_projection with a warp method = 2 (triangulation) to do this reprojection.