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While Save As ... works easily with vector data, it is not useful to do raster reprojections with it. Instead, use Raster -> Projections -> Warp for reprojection, or Raster -> Convert -> Translate ... for a different file format. For large files, it might be better to use the OSGEO4W Command Shell. You can use gdalwarp or gdal_translate with ...


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--- gdal --- use gdal_contour function. documentation here ---- ArcGIS version----- posted before the software was specified Assuming you are using ArcGIS: 1. Convert the GeoTiff into ESRI GRID (esri raster format) using raster to other formats function, or simply import it in arcGIS and use save (export data) and save it as ESRI GRID. 2. use the Contour ...


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Here an example to create one transparent classe. You will use opacity="0.0" parameter: <sld:ColorMap> <sld:ColorMapEntry color="#000000" opacity="0.0" quantity="-999"/> <sld:ColorMapEntry color="#111111" opacity="1.0"quantity="1.0"/> <sld:ColorMapEntry color="#AAAAAA" ...


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Since you know the coordinates for your pixels, I'll assume that your data are georeferenced. In general the workflow would go like this: 1) Create a shapefile containing the common area. You can do that manually by using any gis software package, or programmatically by using the BBoxes of your datasets. 2) Use that shapefile to cookie-cut your datasets ...


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If you need to know what these tags mean, there are a couple of documents on remotesensing.org here for 34735 and here for 33550. These seem to cover the meaning of the fields. As for how to set them programatically, that depends on which language you're using. The Geotiff wiki on osgeo.org has links to the spec and libraries for the Geotiff format.


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The above error means that the output TIFF generated by BLAST is too large (more than 2GB or more than a certain number of rows or columns) to be stored as a TIF file. Use the IMG format instead that can handle larger outputs. Unfortunately BigTIFF is not implemented at the moment.



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