[gdal-dev] save raster as point-vector file

Mateusz Kędzior matandked at gmail.com
Tue Aug 9 13:35:03 EDT 2011


if I understand properly, I need to add one line to each of processed files.
How I can do it quickly? Is there any option in gdal2xyz.py script?

If no - what would You recommend?
I think about sed utility, but it's general difficult in use.

When I am thinking about Python I see only one possibility - load each file
to variable and then assign to another first line plus variable and at last
- save it.

Best Regards,

W dniu 9 sierpnia 2011 13:38 użytkownik Chaitanya kumar CH <
chaitanya.ch at gmail.com> napisał:

> Mateusz,
> gdal2xyz.py creates space delimited fields. Consider running it with the
> -csv option to delimit it with comma.
> Now you can almost use it as a csv format vector file. You just need to add
> a header row and define a small VRT file as described in OGR's CSV driver
> page[1].
> Run ogrinfo and ogr2ogr on the .vrt file to check the file.
> [1]: http://www.gdal.org/ogr/drv_csv.html
> 2011/8/9 Mateusz Kędzior <matandked at gmail.com>
>> Hello,
>> I would like to show value of each raster cell as label. My idea (I don't
>> know any plugin or any functionality in GDAL/OGR which allow to do it
>> easier) is to export raster using gdal2xyz.py into coordinates-value format
>> and then save it as vector (GML or shapefile). For this second task, I try
>> to use
>> =================================================================================================================================================
>> gdal_polygonize.py:
>> gdal_polygonize.py rainfXYZ.txt rainf.shp Creating output rainf.shp of
>> format GML. 0...10...20...30...40...50...60...70...80...90...100 - done.
>> =================================================================================================================================================
>> unfortunately I am unable to load created file (even if I change the
>> extension to .gml)
>> ogr2ogr tool don't even recognize this format.
>> =========================
>> Thank You in advance,
>> Mateusz
>> _______________________________________________
>> gdal-dev mailing list
>> gdal-dev at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/gdal-dev
> --
> Best regards,
> Chaitanya kumar CH.
> +91-9494447584
> 17.2416N 80.1426E
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