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<body text="#000000" bgcolor="#FFFFFF"><div>You could have done it with GMT as well</div><div><br></div><div>gmtinfo DTM_swissALTI3D_XYZ.txt -I2<br>-R2708001/2717999/1210001/1219999</div><div><br></div><div>xyz2grd -R2708001/2717999/1210001/1219999 -I2 -GDTM_swissALTI3D_XYZ.grd DTM_swissALTI3D_XYZ.txt</div><div><br></div><div>and you get a netCDF grid (it can do GeoTIFs too but would need to go see the docs)</div><div><br></div><div>The grid misses a tile of data at the lower right corner </div><div><br></div><div>Joaquim</div><div><br></div><blockquote style="margin: 0 0 0.80ex; border-left: #0000FF 2px solid; padding-left: 1ex">
<p>Hi Mark (and others),</p>
<p>Your sort command worked like a charm. It was also very fast!</p>
<p>Now gdalinfo produces this nice information output:</p>
<p>Driver: XYZ/ASCII Gridded XYZ<br>
Files: dtmav_sorted.xyz<br>
Size is 5000, 5000<br>
Coordinate System is `'<br>
Origin = (2708000.000000000000000,1210000.000000000000000)<br>
Pixel Size = (2.000000000000000,2.000000000000000)<br>
Corner Coordinates:<br>
Upper Left ( 2708000.000, 1210000.000) <br>
Lower Left ( 2708000.000, 1220000.000) <br>
Upper Right ( 2718000.000, 1210000.000) <br>
Lower Right ( 2718000.000, 1220000.000) <br>
Center ( 2713000.000, 1215000.000) <br>
Band 1 Block=5000x1 Type=Float32, ColorInterp=Undefined<br>
Min=728.210 Max=2294.290 <br>
NoData Value=0<br>
</p>
<p>Now I can open this in QGIS as a normal data source and simply
safe as a GeoTIFF file.</p>
<p>Thanks a lot to all who answered so quickly!</p>
<p>Glad that a simple sort command on the command line helped to
solve the issue! I will contact the data provider and ask them if
they could deliver this data in an already sorted form so that
GDAL recognizes it as gridded data.<br>
</p>
<p>Andreas<br>
</p>
<br>
<div class="moz-cite-prefix">On 11.09.2017 16:12, Mark Johnson
wrote:<br>
</div>
<blockquote type="cite" cite="mid:CAEEbjBgFHm4H3u6NH2+YwUcX-oxxKb7_QHiWagp1srMy6bxVow@mail.gmail.com">
<div dir="ltr">You must sort the data beforehand
<div>- the y position must be sorted properly (ASC or DESC)</div>
<div><br>
</div>
<div>Standard linux sort program:</div>
<div><br>
</div>
<div>sort -k2 -n -k1 <a href="http://392_5810.xyz" moz-do-not-send="true">392_5810.xyz</a> -o <a href="http://392_5810.sort.xyz" moz-do-not-send="true">392_5810.sort.xyz</a><br>
</div>
<div><br>
</div>
<div>(2nd column (y) as numeric, then first column (x) -o =
output file</div>
<div><br>
</div>
<div>As a zip file you can also do:</div>
<div><br>
</div>
<div>unzip -p 390_5820.zip | sort -k2 -n -k1 -o
../xyz/390_5820.dhhn92.txt<br>
</div>
<div><br>
</div>
<div>that would deal with problem in 1 step.</div>
<div><br>
</div>
<div>ogr needs to know the range/area to build (minx,miny,maxx,
maxy), so when the y switches it assumes a new column.</div>
<div><br>
</div>
<div>Mark</div>
</div>
<br>
<br>
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