Hi:
I need to create a tileindex of several non-rectangular raster images. I tried
GdaltIndex, but produces rectangular polygons including the non-data (Null)
pixels.
These images i have are Landsat 7 saved as *.img, *.tiff, *.Sid.
These images are rhomboidal. Since the file is rectangular there is an area
with no valid pixels (non-data or Null). I need a boundary polygon that exclude
this pixels.
I found an arcview 3x extension named Grid to Valid-pixel Polygon Catalog w
Stats, that creates a boundary polygons of the valid pixels, but works just
with Grid images. I could change the format of my images but this is very very
time consuming.
Is there any script to create irregular bounding polygons (non-rectangular)
from the valid pixels for several images?
Best regards
Victor
______________________________________________
Enviado desde Correo Yahoo! La bandeja de entrada más inteligente._______________________________________________
mapserver-users mailing list
mapserver-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapserver-users
