It's probably necessary to have a dataset exhibiting the failure to get
some insight into this problem.
On Wed, Jul 30, 2014 at 1:53 PM, Jan Tosovsky <[email protected]> wrote:
> Dear All,
>
> while Polygonizer works fine on other large datasets, one particular result
> contains an invalid geometry. The following validation test returns
> 'Self-intersection at or near point (0.0, 0.2775529922968814, NaN)'
> message:
>
> for (Geometry polygon : polygonCollection) {
>
> IsValidOp isValidOp = new IsValidOp(polygon);
> if (!isValidOp.isValid()) {
> System.err.println("Geometry is invalid: " +
> isValidOp.getValidationError());
> polygon = polygon.buffer(0); // has no effect in further processing
> }
>
> When polygon.buffer(0) is employed (suggested in FAQ), it doesn't help.
>
> There are lots of small triangles in my 'polygonized' data. Could it be
> somehow related to the precission?
>
> What else I could improve to get it fixed?
>
> Thanks, Jan
>
>
>
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