Changes between Initial Version and Version 1 of Ticket #6060


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Timestamp:
Aug 5, 2015, 8:25:24 PM (9 years ago)
Author:
Mike Taves
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  • Ticket #6060 – Description

    initial v1  
    1313While GDAL is fairly robust at correctly interpreting if a raster is integer or float type, other software such as ArcGIS is not. For instance, a raster that is mostly zero is interpreted by ArcGIS as signed integer. But modify the first pixel of the ASC file from `0` to `0.` corrects the interpretation to floating point. (This is not an issue with GDAL, which evaluates 100% of the data, not 100 kB as documented).
    1414
     15[[Image(Comparison_of_asc.png)]]
     16
    1517A suggestion for writing float rasters is to check if the formatted string of the first pixel of the first line has a `.` character. If not, and the value is finite (not NaN, Inf, etc.), append a `.` to that first value.