[gdal-dev] gdal_polygonize error with Arc/Info binary grid

[Vish Uma]

Hi all,

I am trying to convert an Arc/Info binary grid raster file to a shapefile
using the gdal_polygonize.py utility. But the operation fails with the
following error


*Warning 1: Unsupported Arc/Info Binary Grid tile of type 0x80 encountered.
This and subsequent unsupported tile types set to no data value.*



Here is a screenshot of the error
http://osgeo-org.1560.n6.nabble.com/file/n4373658/Capture1.png 

I am able to open and view the binary grid file just fine in ArcMAP etc.
Here are the results when i run gdalinfo on the binary grid file. It seems
to be fine





Driver: AIG/Arc/Info Binary Grid
Files: /home/vish/Sample_Data/nh_priority
      /home/vish/Sample_Data/nh_priority.ovr
      /home/vish/Sample_Data/nh_priority/vat.adf
      /home/vish/Sample_Data/nh_priority/w001001x.adf
      /home/vish/Sample_Data/nh_priority/w001001.adf
      /home/vish/Sample_Data/nh_priority/hdr.adf
      /home/vish/Sample_Data/nh_priority/dblbnd.adf
      /home/vish/Sample_Data/nh_priority/prj.adf
      /home/vish/Sample_Data/nh_priority/sta.adf
Size is 4987, 9645
Coordinate System is:
PROJCS["NAD83 / New Hampshire",
    GEOGCS["NAD83",
        DATUM["North_American_Datum_1983",
            SPHEROID["GRS 1980",6378137,298.257222101,
                AUTHORITY["EPSG","7019"]],
            AUTHORITY["EPSG","6269"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.01745329251994328,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4269"]],
    UNIT["METERS",1],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",42.5],
    PARAMETER["central_meridian",-71.66666666666667],
    PARAMETER["scale_factor",0.999966667],
    PARAMETER["false_easting",300000],
    PARAMETER["false_northing",0],
    AUTHORITY["EPSG","32110"],
    AXIS["X",EAST],
    AXIS["Y",NORTH]]
Origin = (228040.838957945175935,311318.187724410032388)
Pixel Size = (30.000000000000000,-30.000000000000000)
Corner Coordinates:
Upper Left  (  228040.839,  311318.188) ( 72d35'2.81"W, 45d17'53.85"N)
Lower Left  (  228040.839,  21968.188) ( 72d32'41.44"W, 42d41'39.84"N)
Upper Right (  377650.839,  311318.188) ( 70d40'35.98"W, 45d17'51.67"N)
Lower Right (  377650.839,  21968.188) ( 70d43'8.53"W, 42d41'37.85"N)
Center      (  302845.839,  166643.188) ( 71d37'52.26"W, 44d 0'0.06"N)
Band 1 Block=256x16 Type=Byte, ColorInterp=Palette
  Min=0.000 Max=2.000 
  NoData Value=255
  Overviews: 2494x4823, 1247x2412, 624x1206, 312x603, 156x302
  Color Table (RGB with 3 entries)
    0: 255,255,255,255
    1: 211,255,190,255
    2: 0,84,3,255
<GDALRasterAttributeTable>
  <FieldDefn index="0">
    <Name>VALUE</Name>
    <Type>0</Type>
    <Usage>5</Usage>
  </FieldDefn>
  <FieldDefn index="1">
    <Name>COUNT</Name>
    <Type>0</Type>
    <Usage>1</Usage>
  </FieldDefn>
  <FieldDefn index="2">
    <Name>STEW_STATUS</Name>
    <Type>2</Type>
    <Usage>0</Usage>
  </FieldDefn>
  <Row index="0">
    <F>0</F>
    <F>7209043</F>
    <F>non-eligible</F>
  </Row>
  <Row index="1">
    <F>1</F>
    <F>7672024</F>
    <F>eligible, non-priority</F>
  </Row>
  <Row index="2">
    <F>2</F>
    <F>11779591</F>
    <F>priority</F>
  </Row>
</GDALRasterAttributeTable>
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