Oops... that should have been "Find the point where p.y - p.x is a *minimum*". I'm not quite sure what you mean by "ordering comparator". In JTS Coordinate...
329
Alvaro Zabala
alvaro_zabala2
Jun 11, 2003 7:51 am
Hi! Im a new member, and we´re using JTS 1.2 for two months. I think its a great tool, but Ive found a problem when we try to intersect two polygons. I...
331
Paul Ramsey
pwramsey3
Jun 11, 2003 2:34 pm
Alvaro, Step one is to isolate which two geometries caused the infinite loop problem. Then post the geometries to the list so that others can replicate your...
332
David Blasby
dblasby@...
Jun 11, 2003 4:11 pm
... Is the first point of your polygon the same as the last point? dave...
336
robmeek355
Jun 22, 2003 1:44 pm
Hi there, I'm using JTS to perform unions on groups of 50-70 overlapping polygons in a java font editing experiment. The polygons themselves are relatively...
337
Martin Davis
mbdavis@...
Jun 23, 2003 4:40 pm
Unfortunately in the current API there is no way to optimize the operation of "Union of many polygons". But you're right in suspecting that there *is* a...
338
robmeek355
Jun 23, 2003 5:06 pm
Thanks for the quick and thorough response. Encouraging that it might be possible, and that the basic code is there in JTS. I'll take a closer look behind the...
339
Coats, Andy W
awcoats
Jun 23, 2003 5:08 pm
I was wanting to a union of multiple polygons in one operation too but decided it was not priority since we do the union of polygon in a batch process and...
340
Martin Davis
mbdavis@...
Jun 23, 2003 5:16 pm
Andy, I haven't thought about this in detail enough to say whether your proposed changes are sufficient to implement union of multiple polygons. My gut feel...
341
tommaso.nolli@...
tom_0002002
Jun 23, 2003 7:56 pm
I will be out of the office starting 23/06/2003 and will not return until 30/06/2003. Risponderò al messaggio al mio ritorno....
344
pablogh_2000
Jun 25, 2003 2:27 pm
Hi all, I am using the GeoServer for saving GPS data into a PostGIS Database. All is installed on a Win2K Server Machine. My problem comes when GeoServer...
345
Paul Ramsey
pwramsey3
Jun 25, 2003 2:50 pm
Probably the quickest fix would be to tell your JVM to stop being so darned spanish. Is there a startup parameter or property for java to control the locale?...
346
Aron Olsen
aronolsen
Jun 25, 2003 3:08 pm
Hi there, In my experience changing the locale on a Win2K machine will also change the default locale used by the JVM. If JTS is always to write "american";...
347
David Blasby
dblasby@...
Jun 25, 2003 4:27 pm
... I dont know - I use atof() and strtod() for the parsing. The MAN page says these function are defined by the ANSI C specification. Its also conforming to...
348
Martin Davis
mbdavis@...
Jun 25, 2003 10:47 pm
Thanks for pointing out this problem, Pablo, and thanks for pointing out a solution, Aron. I'll add this to the list for JTS Version 1.3.1 Martin Davis,...
349
Andreas Jaeger
sergeantpluck
Jun 26, 2003 12:30 pm
... You can pass to the JVM the appropriate system properties: -Duser.country=GB -Duser.language=en...
350
Hisaji Ono
hi_ono2001@...
Jun 27, 2003 3:55 pm
Hi. Yesterday I knew release of JUMP from an article(http://www.digitalearth.org/story/2003/6/26/132356/173). I tried JUMP(http://www.vividsolutions.com/jump/)...
351
Martin Davis
mbdavis@...
Jun 27, 2003 4:01 pm
Glad you like it, Hisaji. We're working on the mailing list... Martin Davis, Senior Technical Architect Vivid Solutions Inc. Suite #1A-2328 Government Street...
352
Martin Davis
mbdavis@...
Jun 27, 2003 5:19 pm
JTS'ers: You may be interested in checking out the following new products from the same team that brought you JTS: JUMP - the Unified Mapping Platform An...
353
Cameron Shorter
cameronshorter
Jun 29, 2003 11:02 am
... For those running on unix platforms, you might want to use the attached shell startup script (which is a translation of the .bat startup script). It needs...
354
robmeek355
Jun 30, 2003 11:15 am
Hallo again, I'm still pondering the issue of performing a quicker union of multiple polygons. I can see now that the code is already there, at least to...
355
Aron Olsen
aronolsen
Jul 1, 2003 6:01 am
Hi there, I vote for 2 too (self-union). Another operation which I would like to see in there is a "self-dissolve", an operation where you obtain all the...
356
Martin Davis
mbdavis@...
Jul 4, 2003 5:08 pm
... Probably because your MultiPolygon is not valid. Don't forget, MultiPolygons can't contain overlapping polygons (which I think is what your application...
357
modenait3550
Jul 16, 2003 3:14 pm
Hello, I use the jts pakage but I ve the following problem : com.vividsolutions.jts.geom.TopologyException: side location conflict [ (600.0, 0.5, NaN) ] while...
358
Martin Davis
mbdavis@...
Jul 16, 2003 3:45 pm
Polygon 1 is invalid - it has a self-intersection caused by the coindicence of the line segments between the points (600 0.5, 1650 0.5, 612 0.5) Martin Davis,...
359
modenait3550
Jul 17, 2003 3:42 pm
Thanx but now i have the same pb with this two following polygons : P1 POLYGON ((1600 0.4, 1600 0.48, 1651 0.48, 1651 0.5, 1700 0.5, 1700 0.56, 1750 0.56, 1750...
360
Martin Davis
mbdavis@...
Jul 17, 2003 6:58 pm
Well, after some investigation it looks like you might have hit a actual robustness failure within JTS. Remember, the algorithms used for the boolean...
361
register
robmeek355
Jul 20, 2003 7:34 pm
I think I've got at least the beginnings of a working solution to my problem now. Here is an example applet: http://www.robmeek.com/test/jts/test.html ...
362
Jos€ ¦é Ram€ ¦ón Mej€...
jose_ramon_m...
Jul 21, 2003 1:16 pm
Great example! Of course I'd like to see the code. José Ramón...
363
atompilz_de
Aug 19, 2003 3:09 pm
Hello all, is this group still active? How do I use the PolygonBuilder? Say I have a *simple* LineString, forming a triangle as below. How do I build a Polygon...
