I don't suppose there are shapefiles with Landsat footprints available that would help? If your data matched standard scene boundaries then perhaps you could build an index from that. ESRI's ArcWorld dataset had such a
>>> On 7/8/2008 at 3:41 AM, in message <[EMAIL PROTECTED]>, victor valencia <[EMAIL PROTECTED]> wrote: > 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 [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
