[Gdal-dev] gdaladdo to jpeg compressed tif?

[Matt Wilkie]

Hello there,

Should I be able to add overviews to a jpeg compressed tif? I have a 
batchfile I created a month ago which does:

    for /d %%a in (0* 1*) do (
      gdal_translate  %%a\dem_sh %outdir%\shade_%%a.tif -co "compress=jpeg"
      gdaladdo %outdir%\shade_%%a.tif 2 4 8 16
     )

however now when I run it, I get errors like this:

    gdaladdo -r average shade_095.tif 2 4 8 16
    0...10...20...30...40...50...60...70..
    Assertion failed:  sp->cinfo.comm.is_decompressor,
    file tif_jpeg.c, line 675

    This application has requested the Runtime to terminate it
    in an unusual way.
    Please contact the application's support team for more information.

So either I never actually test the code above or the version I'm using 
  is broken (GDAL 1.3.1.0, FWTools 1.0.0a6, released 2005/11/03).


-- 
matt wilkie
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