Opened 9 years ago

Closed 5 years ago

#6044 closed enhancement (wontfix)

[PATCH] Allow users to force a call to morphFromESRI() in importFromWkt()

Reported by: Kyle Shannon Owned by: warmerdam
Priority: normal Milestone: closed_because_of_github_migration
Component: OGR_SRS Version: svn-trunk
Severity: normal Keywords: esri


I have run into datasets that sometimes have ESRI WKT embedded, but the driver doesn't necessarily call morphFromESRI(), and a proj4 definition can't be created. This means warping/reprojection won't work. Simple config option/patch to allow this in OGRSpatialReference()::morphFromESRI(), perhaps I should add it to setFromUserInput() as well. I'll commit if there are no objections, and there isn't a mechanism that I missed that would do the same thing.

Attachments (1)

esri_force_morph.patch (662 bytes ) - added by Kyle Shannon 9 years ago.

Download all attachments as: .zip

Change History (5)

by Kyle Shannon, 9 years ago

Attachment: esri_force_morph.patch added

comment:1 by Even Rouault, 9 years ago

I'm wondering if this couldn't be guessed to some extent. For example, AFAIK, ESRI datum names always start with "D_" and they have no AUTHORITY nodes. The name of nodes have never spaces too. At least that's what morphToESRI() does. It also seems that GCS names always start with GCS_ (, confirmed also with and, but this last rule isn't necessarily always followed by morphToESRI()

But the automation should probably not be done in importFromWkt() itself, since we want to be able to loss-lessly import/export ESRI WKT. So perhaps a isESRIWkt() method that would be used by the drivers that can encounter it (assuming they are not too many) ? Or perhaps if we want to be more general a guessWktVariant() that would return OSR_OGC_WKT_1 or OSR_ESRI_WKT (and could later be extended to OSR_OGC_WKT_2 if we ever support it)

If that sounds too complicated / not reliable, your patch is OK.

comment:2 by Kyle Shannon, 9 years ago


That's probably a better way to handle it. I may leave the force option in as well, but I will work up a IdentifyEsri() or some such function that checks datum names, as you mentioned and maybe PROJCS names. Thanks for the input.

Last edited 9 years ago by Kyle Shannon (previous) (diff)

comment:3 by Even Rouault, 8 years ago

Milestone: 2.1.0


comment:4 by Even Rouault, 5 years ago

Milestone: closed_because_of_github_migration
Resolution: wontfix
Status: newclosed

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