Opened 19 years ago

Last modified 19 years ago

#940 closed defect (fixed)

multipolygon shapefiles do not display correctly

Reported by: ari.jolma@… Owned by: mbrudka@…
Priority: high Milestone:
Component: OGR_SF Version: unspecified
Severity: normal Keywords:
Cc: mbrudka@…

Description 

multipolygon shapefiles do not display correctly after applying revision 1.36 of
shape2ogr.cpp

Attachments (1)

asm.zip​ (1.7 KB ) - added by warmerdam 19 years ago.
One feature shapefile demonstrating problem.

Download all attachments as: .zip

Change History (6)

comment:1 by warmerdam, 19 years ago 

Ari,

Can you provide more details?  A data file demonstrating the problem.
An ogrinfo report demonstrating the problem with the resulting geometry?

comment:2 by ari.jolma@…, 19 years ago 

at the above URL there is a world countries shapefile (groundwater...) and the
same file reprojected (rajat.tgz)

the bug is obvious if you, as I did, view the rajat shapefile with the broken
shape2ogr in gdal.so, for example with qgis

by warmerdam, 19 years ago

Attachment: asm.zip​ added

One feature shapefile demonstrating problem.

comment:3 by warmerdam, 19 years ago 

I have attached a smaller shapefile with just American Samoa.  

If inspected with shpdump the one feature in this file has 72 vertices.
But if inspected with ogrinfo (or ogr2ogr'ed to a new shapefile and viewed
with shpdump) the features has 144 vertices.  Apparently all the rings
are being duplicated. 

It isn't obvious to me how to fix this problem, so I am just going to 
revert MBrudka's changes of revision 1.36 for now.

comment:4 by mbrudka@…, 19 years ago 

See the problem. Thanks for the bug report and the test case.

comment:5 by mbrudka@…, 19 years ago 

Admin reverted to 1.36 and fixed the bug for attached shape file in r1.38.
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