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Using resample.exe for terrain mesh

P

Phil31

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france
Hi everyone

I am trying to build a mesh for a carribean island.

I downloaded a GeoTIFF file for that island. The issue is that when I am trying to use it with resample.exe I get the following error: pixel width and height must be greater than zero

If that can help if I use GeoTifftoInf.exe to help creating the .inf file it says "GeoTIFF tags not found".

Can someone tell me what this means ?

Thanks for the help
Philippe
 
thanks Giovanni

I went through the SDK and noticed that some inf files contain more info than mine. However the one I have attached as simply as it is works on other GeoTIFF files so ..
I suspect that the GeoTIFF files I have downloaded are missing some data thus the "pixel width and height must be greater than zero" warning that I do not understand

Philippe
 
The .inf appears to be formatted correctly. To avoid errors I would place all items including resample.exe into a common directory and set my SourceDir = "." and DestDir = ".". We would need to see your source Geotiff, linked or shared here, to learn more. I suspect there is a mismatch in data projection.
 
Phil31 said:
I get the following error: pixel width and height must be greater than zero
Click to expand...

This means that you have not specified your TIFF source file, the value of:

nCols = Number of columns (Integer) of your source file TIFF
nRows = Number of rows (Integer)
xDim = 0.000277777777777778 // srtm 1 arc sec 30 metri Size of each pixel in the X direction (Longitude) in degrees
yDim = 0.000277777777777778 Size of each pixel in the Y direction (Latitude) in degrees.


Ultimately your .inf file must be like this:

[Source]
Type = GeoTIFF
Layer = Elevation
SourceDir = "C:\Users\Philippe\Desktop\Mesh"
SourceFile = "dtm.tif"
nCols =
nRows =
xDim = 0.000277777777777778 // required for TIFF
yDim = 0.000277777777777778 // required for TIFF



[Destination]
DestDir = "Output"
DestBaseFileName = "C:\Users\Philippe\Desktop\Mesh\StEustatius"
DestFileType = BGL
LOD = Auto


These values are dependent on your source TIFF file.

nCols =
nRows =
xDim =
yDim =
 
Rick, Bavarello

yes agree the WGS84 data format was the issue in fact. I had to reproject and then everything worked ok

thanks to both of you !

Philippe
 
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