[gdal-dev] gdal_grid utility

[David Hildebrand]

I am trying to grid a set of points.  My input is a CSV file for which I
have created a VRT file.  The input coordinate system is WGS84 but the
output is Transverse Mercator (for which I have an ESRI PRJ file).  The
command completes but the output is upside down.  Here is the command
line.

 

gdal_grid.exe

  -ot Float32

  -of GTiff

  -a_srs "a10tm.prj"

  -txe 134498.3 865501.7 -tye 5425283.9 6659287.2

  -outsize 73 123

  -a invdist:nodata=9999

  -l alberta_out

  "alberta_out.vrt" "abl_val_16.tif"

 

Here is the console output.

 

Grid data type is "Float32"

Grid size = (73 123).

Corner coordinates = (129491.408618 6664303.466297)-(870508.591382
5420267.656599).

Grid cell size = (10013.745713 10032.546852).

Source point count = 835.

Algorithm name: "invdist".

Options are
"power=2.000000:smoothing=0.000000:radius1=0.000000:radius2=0.000000

:angle=0.000000:max_points=0:min_points=0:nodata=9999.000000"

 

0...10...20...30...40...50...60...70...80...90...100 - done.

 

An output image is created but upside down.  The top should be the
bottom and vice versa.

 

Any ideas?  If so, please respond to this email address.  Thanks.

 

 

 

===========================
David V. Hildebrand
Agriculture Financial Services Corporation
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