[FWTools] gdal_merge with a specific pixel value clipped/removed

[Ari Simmons]

I have a large set of .tif files and I need to merge/mosaic them all into
one .tif with the no-data value removed (i.e. value 230, 245, 255).
However, when I put this in...pixel '230, 245, 255' becomes '0, 245, 255').

I am trying to get NO PIXEL returned for 230, 245, 255. Is that possible?
I:\TFS_6\trial_merge>gdal_merge.py -o test.tif -n 230 245 255 file1.tif
file2.tif

ERROR 4: `245' does not exist in the file system,
and is not recognised as a supported dataset name.

ERROR 4: `255' does not exist in the file system,
and is not recognised as a supported dataset name.

0...10...20...30...40...50...60...70...80...90...100 - done.
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