[gdal-dev] Tolerance Condition Error ogr2ogr Albers to EPSG:4326

[Even Rouault]

Peter,

I suspect the reprojection of your features went fine, otherwise you 
would have got an error message like "Failed to reproject feature XXXX 
(geometry probably out of source or destination SRS)". This error 
message must come from some code that tries heuristics related to polar 
or anti-meridian geometry splitting, although normally there are 
provisions to silent non-critical reprojection errors related to those 
heuristics, but perhaps there's some silencing missing somewhere.

I could have a look if you can pass on the dataset (you can send it / a 
link for it privately if needed)

Even

Le 19/12/2022 à 19:16, Peter Townsend via gdal-dev a écrit :
> I've got this test dataset of a bunch of forest areas in Alaska. The 
> shapefile is in Albers, and we're converting it to EPSG:4326 lat longs.
>
> Layer name: trees
> Geometry: Polygon
> Feature Count: 444
> Extent: (-2175230.041280, 1899842.624457) - (4895522.387686, 
> 6909266.538422)
> Layer SRS WKT:
> PROJCRS["Albers",
>     BASEGEOGCRS["NAD27",
>         DATUM["North American Datum 1927",
>             ELLIPSOID["Clarke 1866",6378206.4,294.978698213898,
>                 LENGTHUNIT["metre",1]],
>             ID["EPSG",6267]],
>         PRIMEM["Greenwich",0,
>             ANGLEUNIT["Degree",0.0174532925199433]]],
>     CONVERSION["unnamed",
>         METHOD["Albers Equal Area",
>             ID["EPSG",9822]],
>         PARAMETER["Latitude of false origin",50,
>             ANGLEUNIT["Degree",0.0174532925199433],
>             ID["EPSG",8821]],
>         PARAMETER["Longitude of false origin",-154,
>             ANGLEUNIT["Degree",0.0174532925199433],
>             ID["EPSG",8822]],
>         PARAMETER["Latitude of 1st standard parallel",55,
>             ANGLEUNIT["Degree",0.0174532925199433],
>             ID["EPSG",8823]],
>         PARAMETER["Latitude of 2nd standard parallel",65,
>             ANGLEUNIT["Degree",0.0174532925199433],
>             ID["EPSG",8824]],
>         PARAMETER["Easting at false origin",0,
>             LENGTHUNIT["US survey foot",0.304800609601219],
>             ID["EPSG",8826]],
>         PARAMETER["Northing at false origin",0,
>             LENGTHUNIT["US survey foot",0.304800609601219],
>             ID["EPSG",8827]]],
>     CS[Cartesian,2],
>         AXIS["(E)",east,
>             ORDER[1],
>             LENGTHUNIT["US survey foot",0.304800609601219,
>                 ID["EPSG",9003]]],
>         AXIS["(N)",north,
>             ORDER[2],
>             LENGTHUNIT["US survey foot",0.304800609601219,
>                 ID["EPSG",9003]]]]
>
> We're trying to upgrade our GDAL from 3.21 to 3.53, and our poor test 
> is getting flagged now with either "ERROR 1: Point outside of 
> projection domain" and/or "ERROR 1: tolerance condition error".
>
> This is what I'm seeing:
> ogr2ogr.exe -skipfailures -t_srs EPSG:4326 --debug on c:\path\output 
> c:\path\trees.shp
> GDAL: GDALOpen(c:\path\trees.shp, this=0000027A1189CBE0) succeeds as 
> ESRI Shapefile.
> GDAL: Using ESRI Shapefile driver
> GDAL: GDALDriver::Create(ESRI 
> Shapefile,c:\path\output,0,0,0,Unknown,0000000000000000)
> Shape: DBF Codepage = LDID/87 for c:\path\trees.shp
> Shape: Treating as encoding 'ISO-8859-1'.
> ERROR 1: tolerance condition error
> ERROR 1: tolerance condition error
> GDALVectorTranslate: 444 features written in layer 'trees'
> Shape: 444 features read on layer 'trees'.
> GDAL: GDALClose(c:\path\trees.shp, this=0000027A1189CBE0)
> GDAL: GDALClose(c:\path\output, this=0000027A1189D4A0)
> GDAL: In GDALDestroy - unloading GDAL shared library.
>
> (Same thing happens without skipfailures.)
>
> Now I'm 95% sure it's throwing this error because there's some vertex 
> somewhere in here that's in that special "dead zone" for Alaska Albers 
> that can't convert to 4326 (seen this before on other datasets trying 
> to project individual points).
>
> What I'm wondering is this:
> 1) Is there any way to get GDAL to tell me what feature/coordinate 
> threw the error?
> 2) What is it doing as a fallback behavior? Skipping the point and 
> moving on? I still come out with the same number of features in the end.
>
> Thanks!
> -- 
> Peter Townsend
> Senior Software Developer
>
> _______________________________________________
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/gdal-dev

-- 
http://www.spatialys.com
My software is free, but my time generally not.
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