[gdal-dev] nodata in .bil format

Jan Heckman jan.heckman at gmail.com
Wed Mar 6 12:10:23 PST 2013

There should certainly not be a space between Nodata and Value as in your
mail below.
There are two formats relevant for (at least) arcgis:
.bil. In this case the keyword is NoData
.flt. In this case the keyword is NoData_Value.
Capitalization, afaik, is irrelevant.
So you could modify the .hdr file as a test, and if it works out as I
indicated (NoData=-9999 in stead of NoData Value=-9999) you can file a
useful ticket.
.flt, by the way, is a float array which appears to be used only as an
intermediate (conversion) format, as in the conversion tools: float to
raster and vice versa.
Hope this helps a little,

On Wed, Mar 6, 2013 at 7:53 PM, Joaquim Luis <jluis at ualg.pt> wrote:

> Hi,
> While playing a bit with Lastools I came across this behavior. I create
> outputs in both .bil and .asc ESRI formats
> The weird thing is that beeing the .hdr header file common (I mean exactly
> equal) to both outputs the  .bil format does not recognize the nodata value.
> Is this a knwon issue?    (GDAL trunk on Windows)
> gdalinfo lixo.bil
> ERROR 6: lixo.bil, band 1: SetNoDataValue() not supported for this dataset.
> Driver: EHdr/ESRI .hdr Labelled
> C:\programs\lastools\data>**gdalinfo lixo.asc
> Driver: AAIGrid/Arc/Info ASCII Grid
> Files: lixo.asc
> ...
> Band 1 Block=250x1 Type=Float32, ColorInterp=Undefined
>   NoData Value=-9999
> Joaquim
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