Opened 15 years ago
Last modified 15 years ago
#674 new enhancement
add a region option flag to v.proj / r.proj
| Reported by: | timmie | Owned by: | |
|---|---|---|---|
| Priority: | normal | Milestone: | 6.5.0 |
| Component: | Vector | Version: | svn-develbranch6 |
| Keywords: | v.proj | Cc: | |
| CPU: | x86-32 | Platform: | Linux |
Description (last modified by )
- imagine a global data set (world borders in EPSG 4326) that is to be reprojected into a samller zone (UTM N13 location).
- doing this without the region flag caused the following error:
v.proj: split_q.c:69: RTreeClassify: Assertion `!p->taken[i]'
failed. - take -r flag of v.in.ogr as example
Change History (4)
comment:1 by , 15 years ago
| Component: | default → Vector |
|---|---|
| Keywords: | v.proj added |
| Milestone: | 6.4.0 → 6.5.0 |
| Type: | defect → enhancement |
comment:2 by , 15 years ago
| Description: | modified (diff) |
|---|
comment:3 by , 15 years ago
to add to my previous comments to this ticket (which were perhaps a bit harsh), a region cropping flag could be nice. even if it is not universally workable it would probably work for most practical cases.
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It is not surprising it ended in error, you asked it to do something mathematically unsuitable.
crop your vector with v.in.region + v.overlay before you try to project it. simply selecting line features if they cross the target region is no good as the line could extend far out of zone. simply throwing away vertices outside the region is no good too because it breaks topology.
the error message could be clearer, beyond that I'd consider to close this as wontfix.
Hamish