Opened 6 years ago

Closed 6 years ago

#5601 closed defect (wontfix)

gdalbuildvrt does not support positive NS resolution

Reported by: lordmonkey Owned by: warmerdam
Priority: normal Milestone:
Component: GDAL_Raster Version: unspecified
Severity: normal Keywords:
Cc:

Description

I have a map dataset in ASCII XYZ grid in WGS84 format, as follows:

50.7105,16.4941,560.39
50.7108,16.5089,560.39

I would like to build a vrt file out of it but it's not gridded:

Ungridded dataset: At line 4, X is 50.710600, where as 50.710500 was expected

So I have used gdal_grid to make it in grid:

gdal_grid -a invdist:smoothing=0.0004 -of GTiff -ot Float64 -outsize 1000 1000 -l all all.vrt all.tif

and now I have tried again to use gdalbuildvrt but it says:

gdalbuildvrt out.vrt all.tif
0...10...20...30...40...50...60...70...80...90...100 - done.
Warning 6: gdalbuildvrt does not support positive NS resolution. Skipping all.tif

I am using version 1.10.1+dfsg-5ubuntu1 on Ubuntu Trusty

Attachments (2)

all_small.csv (22.3 KB) - added by lordmonkey 6 years ago.
Ungridded csv
all_small.tif (313.1 KB) - added by lordmonkey 6 years ago.
Gridded tif

Download all attachments as: .zip

Change History (3)

Changed 6 years ago by lordmonkey

Attachment: all_small.csv added

Ungridded csv

Changed 6 years ago by lordmonkey

Attachment: all_small.tif added

Gridded tif

comment:1 Changed 6 years ago by Even Rouault

Resolution: wontfix
Status: newclosed

The fact that gdal_grid returns a non negative y resolution is known (and should probably be fixed), but it produces consistant result still. Using gdalwarp to make a north-up dataset is the workaround. And supporting positive NS resolution in gdalbuildvrt is not high in my priority list. Closing

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