[gdal-dev] Set max value of "1.#IO" in Geotiff to nodata

Tue Apr 1 17:20:54 PDT 2014

Hello gdal,

I have a set of geotiffs that have a strange max (infinity?) values that I would like to set to nodata.  These originally were netcdf files.  With the current of gdal in OSGEO4W, gdalinfo reports:

gdalinfo -mm pola_cascadiad_sift2_maxspeed.tif

Driver: GTiff/GeoTIFF

Files: pola_cascadiad_sift2_maxspeed.tif

Size is 1810, 1100

Coordinate System is:

GEOGCS["WGS 84",

    DATUM["WGS_1984",

        SPHEROID["WGS 84",6378137,298.257223563,

            AUTHORITY["EPSG","7030"]],

        AUTHORITY["EPSG","6326"]],

    PRIMEM["Greenwich",0],

    UNIT["degree",0.0174532925199433],

    AUTHORITY["EPSG","4326"]]

Origin = (-118.302500000118700,33.779999999966194)

Pixel Size = (0.000092592592580,-0.000092592592587)

Metadata:

  AREA_OR_POINT=Area

Image Structure Metadata:

  INTERLEAVE=BAND

Corner Coordinates:

Upper Left  (-118.3025000,  33.7800000) (118d18' 9.00"W, 33d46'48.00"N)

Lower Left  (-118.3025000,  33.6781481) (118d18' 9.00"W, 33d40'41.33"N)

Upper Right (-118.1349074,  33.7800000) (118d 8' 5.67"W, 33d46'48.00"N)

Lower Right (-118.1349074,  33.6781481) (118d 8' 5.67"W, 33d40'41.33"N)

Center      (-118.2187037,  33.7290741) (118d13' 7.33"W, 33d43'44.67"N)

Band 1 Block=1810x1 Type=Float64, ColorInterp=Gray

    Computed Min/Max=0.000,1.#IO

I've been converting the geotiff to AAIGrids and replace all "1.#INF" to my nodata value, but I'm hoping that there is an easier way to do this with GDAL.

Thanks in advance,

Bob

Robert Moskovitz
California Geological Survey
Seismic Hazards Zonation Program

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