[gdal-dev] Convert to temperature in degrees C in MODIS Ocean Color?

sigologo dlopezaspe at gmail.com
Wed Jul 18 20:46:50 PDT 2012

Hello Everyone

I'm trying import A20030012003008.L3m_8D_NSST_4, with gdal with this script:

for file in A*L3m_8D_NSST_4 ; do
  echo "map: $file"

  gdal_translate -a_srs "+init=epsg:4326" -a_nodata 65535 \
    -a_ullr -180 90 180 -90 -co "COMPRESS=PACKBITS" \
    HDF4_SDS:UNKNOWN:"$file":0  ${file}_out.tif


all good, but the data not be in degree C............. I find for it another
script but no found in gdal...

for map in `g.mlist rast pat=A*L3m_8D_NSST_4` ; do
  echo "$map"
  g.region rast=$map
  #r.info -r $map
  r.mapcalc "${map}.degC = ($Slope * $map) + $Intercept"
  r.support "${map}.degC" units="deg-C"
  #r.colors "${map}.degC" color=bcyr  # fairly nice

I hope someone can help me with this!!!!!!!!!!!!
Best Regards.

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