Seems possible, as the bug appears when one segment of the line is getting very very small.

On 02/29/2012 02:45 PM, Marco Hugentobler wrote:
Hi Denis

In certain cases, geos trunk throws an exception (version 3.2 crashes):

ERROR 1: IllegalArgumentException: RobustDeterminant encountered non-finite numbers

I noticed it happens often with lines with dense vertex distributions (e.g. segmented curves). Maybe Sandro (strk) knows more about the details?

Regards,
Marco

On 29.02.2012 14:28, Denis Rouzaud wrote:
Hi Marco,

I noticed a bug and Qgis crashes.

Here is a video http://youtu.be/DBbMg5rO8fU

The geometry of the line I played with is:

LINESTRING(554235.01669295 145547.73137862,554242.99020772 145548.76938867,554245.33776182 145545.30016923,554245.49416371 145544.76210759)

Greetings,

Denis


On 02/29/2012 11:11 AM, Marco Hugentobler wrote: Hi all

There is a new editing tool in the master branch.
The offset curve tool creates parallel shifts of linestrings and polygon rings ( single sided buffers with the geos function GEOSSingleSidedBuffer ). The tool can be applied to the edited layer (the geometries are modified) or also to background layers (creates copies of the lines / rings and adds it to the the edited layer). It is thus ideally suited for the creation of distance line layers.

Let me know about issues, suggestions, comments.

The work was kindly funded by the city of Uster (Switzerland).

Regards,
Marco


On 02/29/2012 11:11 AM, Marco Hugentobler wrote:
Hi all

There is a new editing tool in the master branch.
The offset curve tool creates parallel shifts of linestrings and polygon rings ( single sided buffers with the geos function GEOSSingleSidedBuffer ). The tool can be applied to the edited layer (the geometries are modified) or also to background layers (creates copies of the lines / rings and adds it to the the edited layer). It is thus ideally suited for the creation of distance line layers.

Let me know about issues, suggestions, comments.

The work was kindly funded by the city of Uster (Switzerland).

Regards,
Marco



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