Jerl, The contour attribute and the Z values are same here. Just one of them is enough.
With the Z values near the magnitude of 1000, the burn value of 255 is not going to make much of a difference. Use it if you want to offset any negative Z values. You should mention contour.shp instead of just 'contour' for <src_datasource>. Make sure BLANK.tif doesn't have different extents/projection. Your final image will have a data type of Float64. You may have to run some contrast stretching operations on it. On Tue, May 17, 2011 at 12:04 AM, Jerl Simpson <[email protected]>wrote: > Hi guys and gals: > > I have something that's evading me. I have a basic ESRI Shape file > (created using gdal_contour) that I run through gdal_rasterize to > generate very nice looking contour map. But I want the value of the > contour in there. > > I've been trying different things with the -a option, but I can't get > it to work out. > Here's the latest thing I've tried for gdal_rasterize: > > gdal_rasterize -a contour -3d -b 1 -b 2 -b 3 -b 4 -burn 255 -burn 255 > -burn 255 -burn 255 -burn 255 -l contour contour BLANK.tif > > I put an extra burn value in there (have also tried with out) to see > if maybe it was just going in as 0. BLANK.tif is just a black image. > I'm sure I'm missing something simple, just can't see it. I thought > the -a would burn the value of "contour" into the raster. > > Thanks for any guidance!! > > Here's the data from my shapefile: > > INFO: Open of `contour/' > using driver `ESRI Shapefile' successful. > > Layer name: contour > Geometry: 3D Line String > Feature Count: 157 > Extent: (-0.500000, -89.830132) - (359.500000, 89.144137) > Layer SRS WKT: > GEOGCS["GCS_WGS_1984", > DATUM["WGS_1984", > SPHEROID["WGS_1984",6378137,298.257223563]], > PRIMEM["Greenwich",0], > UNIT["Degree",0.017453292519943295]] > ID: Integer (8.0) > contour: Real (12.3) > OGRFeature(contour):0 > ID (Integer) = 0 > contour (Real) = 1000.000 > LINESTRING (87.765060240963862 80.0 1000,..... > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- Best regards, Chaitanya kumar CH. /tʃaɪθənjə/ /kʊmɑr/ +91-9494447584 17.2416N 80.1426E
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