Hi Jukka, > By the way, I was using OpenJUMP for checking the results from playing with > Spatialite and ST_OffsetCurve. It seems to be rather cool, as well as other > new GEOS functions in this document: > http://www.gaia-gis.it/spatialite-3.0.0-BETA/GEOS-advanced.pdf Interesting. All these functions have also been added to postgis 2.0. OffsetCurve would be quite easy to add to OpenJUMP (just added it to OpenJUMP roadmap). Don't know if all other new functions are JTS port or if some are pure geos functions. Have to check that. > Calculating 15 metre offsets for 3.1 million (rather short) linestrings took > 70 minutes with old single processor 3 GHz Xeon and 20 minutes with 2 x 3 GHz > home grade computer. I guess that OpenJUMP might be faster. At least OJ was > considerably faster in doing 4.7 million spatial joins between points and > polygons (70 minutes vs. 5 hours) even I did have proper spatial index in > Spatialite. On the other hand, PostGIS made in in 10 minutes with the same > computer. But for some other operations Spatialite is very fast. OpenJUMP took 70 mn where PostGIS took 10 mn for a simple spatial join ? I don't know how you performed the spatial join in OpenJUMP, but I think that - simple query uses envelope test but no spatial index - matching extension (also well suited for spatial join) uses indexes and can be much faster. > I suppose it could be possible to implement OffsetCurve also in OpenJUMP too > because of the close relation on JTS and GEOS. Sure, for such a plugin, exposing a JTS function, main work is for UI design and Internationalization.
Michaël > > -Jukka- > Lähettäjä: Michaël Michaud [[email protected]] > Lähetetty: 18. kesäkuuta 2012 21:41 > Vastaanottaja: OpenJump develop and use > Aihe: Re: [JPP-Devel] Window synchronization broken > > Hi, >> I had a need to use two project windows with different layer synchronized >> for panning and zooming. Unfortunately that option seems to be badly broken >> in 1.5.2. It is even hard to describe what happens now. Sometimes if I zoom >> in in project one the zooming happens only in project two, but not always. >> Anyway, this feature is unusable right now. Perhaps it should be deactivated >> as a first aid. > It seems that it looses the normal behaviour the first time you try to > pan/zoom on the project which has not the focus. > Seems that you can easily get the good behaviour again by choosing select tool > and clicking in the project you want to have the focus on. > > Michaël >> -Jukka Rahkonen- >> ------------------------------------------------------------------------------ >> Live Security Virtual Conference >> Exclusive live event will cover all the ways today's security and >> threat landscape has changed and how IT managers can respond. Discussions >> will include endpoint security, mobile security and the latest in malware >> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >> _______________________________________________ >> Jump-pilot-devel mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Jump-pilot-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Jump-pilot-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
