Jan,
My mail used copy-paste so the spaces are the same as printed by
gdalinfo but I don't think that is important as it merely reflects how
gdalinfo prints the info. Actually I crossed this problem when my
gdalread mex lib showed that the nodata for the .bil case was 1e10
instead of the -9999.
As another set of tests I converted the .bil to .asc with
gdal_translate -of AAIGrid lixo.bil lixa.asc
ERROR 6: lixo.bil, band 1: SetNoDataValue() not supported for this dataset.
Input file size is 250, 250
0...10...20...30...40...50...60...70...80...90...100 - done.
and here despite the error message the -9999 nodata value was written in
the output.
On the other hand, converting the .asc to .bil (as in below) though no
warnings created a companion .hdr that does not have the 'nodata' line
gdal_translate -of EHdr lixo.asc lixa.bil
Input file size is 250, 250
0...10...20...30...40...50...60...70...80...90...100 - done.
Hi,
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,
Jan
On Wed, Mar 6, 2013 at 7:53 PM, Joaquim Luis <[email protected]
<mailto:[email protected]>> 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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