I am looking for some recent tutes on rendering ERDAS .img files. A bit of the
background:
I inherited these data as an ArcMap .mdb dataset which has metadata.xml, a few
other sundry files, and inside a directory with .idb extension, many more
folders, each containing a .img file, and a corresponding .rrd and .xml file. A
simple layer definition like so allows me to get the tiles displaying in the
browser (via OpenLayers) --
LAYER
NAME "lyr"
TYPE RASTER
DATA "foo.img"
PROCESSING "SCALE=AUTO"
STATUS ON
OFFSITE 0 0 0
END
But, the tiles don't make for a continuous image. I can see the tile
boundaries. Besides correcting that, I would also like to be able to apply
different color ramps, and, finally, I would like to be able to query either
single pixel values (click on the map and get the underlying value), or some
kind of stats on pixels in an area.
Would appreciate any tutorials/write-ups if anyone has done this.
Many thanks,
--
Puneet Kishor_______________________________________________
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