Thanks!
Em 28/11/2012 14:59, "Martin Davis" <mtnclimb@...> escreveu:
> If you mean "Is this result correct?" then the answer is yes. The OGC SFS
> definition for crosses
> can be stated as "The interiors of the geometries have some but not all
> points in common". In this case
> the interior of the Point geometry contains a single point, which lies in
> the interior of the linestring.
> So it does not have any interior points *not* in the interior of the line,
> which would be required
> for the crosses relationship to hold.
>
> See
> http://tsusiatsoftware.net/jts/javadoc/com/vividsolutions/jts/geom/Geometry.html#crosses(com.vividsolutions.jts.geom.Geometry)
>
> If you mean "Does the OGC SFS definition of crosses make sense", that's a
> more subjective question. One take on this is that it doesn't really make
> sense to ask if a line "crosses" a point. But for consistency the
> predicates are defined over all possible combinations of geometry, whether
> or not it makes sense.
>
> On Wed, Nov 28, 2012 at 8:24 AM, João Sávio <joaosavio@...> wrote:
>
>> Is it make sense? I'm using maven 1.12 version
>>
>> LineString g1 = (LineString) new WKTReader().read("LINESTRING (1 0, 1
>> 0)");
>> Point g2 = (Point) new WKTReader().read("POINT (0 0)");
>>
>> *System.out.println(g1.crosses(g2)); // returns false!!!*
>>
>>
>>
>>
>>
>
>
> 
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