but that may be a change too important ? Oliver
Stephen Woodbridge wrote:So if I want ten pixel ellipses with a 1, 2, or 3 pixels gap how would you specify that?points 10 10 gap 1 (or 2 or 3)?Yes, if the rendering behaviour had been according to my preferences, POINTS 10 10 END GAP 1 (or 2 or 3) should do it (if you had specified SIZE 10 in the STYLE). You specify the gap, and not the centre to centre distance between the ellipses. But currently, this is not the behaviour. Currently (with AGG in 5.6.0) you would have to specify: POINTS 10 10 END GAP 6 (or 7 or 8) to get something close (if you specify SIZE 10 in the STYLE). Something seems to be wrong when the GAP is close to half the diameter specified in POINTS - some of the gaps will be as expected, while others are larger (closer to the actual number specified in GAP). Håvard-Steve W Havard Tveite wrote:If Thomas B. agrees, I think it would be reasonable to also open a bug on the gap calculation. In my opinion, since the word "gap" is used, the correct way to specify a symbol with ellipses that has the same gap between them as the diameter of the ellipses should be as follows: symbol name dots type ellipse points 1 1 end gap 1 end or an equivalent "scaled" version such as: symbol name dots type ellipse points 23 23 end gap 23 end The actual size of the ellipses (and the width of the gaps) should be determined by the SIZE in CLASS-> STYLE. If SIZE is 10, the ellipses should have a 10 pixel diameter (and should have a 10 pixel gap between them). I have been hesitant to file bugs regarding symbology, since the documentation on symbology is lacking and there is not complete agreement on how some of the things that has to do with symbology should work. There have also been discussions on changing some behaviour and mechanisms for symbology. First we have to agree on how things should work and document it, then we can file bugs if behaviour is not as expected. Håvard Oliver Christen wrote:Hi Steve I followed your suggestion and opened a documentation bug thanks OliverHi guys,I haven't followed this whole thread but I think it should be better documented so people can understand how to use this. Please write a doc bug and put as much information in the bug about how this works as you have been able to discover.Thanks, -Steve W Oliver Christen wrote:Thank you Håvard I see you have changed "points 1 1 end" by "points 8 8 end".Tell me if im wrong, but these values are only used to render the proportions of the elipse but not it's size, is that correct? so if I understand correctly, using larger values for the elipse width/height refine the rendering of the vectorised dot geometry ?regards OliverDear Oliver Christen, Using Mapserver 5.6.0 and AGG rendering, you can achieve what you want by using a combination of ellipse size and gap size in the symbol definition. There is something strange in the calculations (a gap of about half the ellipse size seems to produce touching symbols), so in your case, you could try to use 8 as the diameter of the ellipses, and 20 + 4 (half the ellipse size) = 24 as the gap: symbol name dots type ellipse points 8 8 end gap 24 end Håvard Oliver Christen wrote:thank you Thomasso if I have a dot of, for example, 8px and I want a space pf 20px between the dots, I need a gap of 20/8 = 2.5but as far as I can see, Mapserver doesnt like none-integer value for gap.what should I do? :(2010/1/12 thomas bonfort <[email protected] <mailto:[email protected]>>gap in pixels = symbol->gap * style->size On Tue, Jan 12, 2010 at 16:52, Oliver Christen <[email protected] <mailto:[email protected]>> wrote: GAP 20 is really giving unwanted result: http://dev.camptocamp.com/~ochriste/tilecache9.png <http://dev.camptocamp.com/%7Eochriste/tilecache9.png>though using only one style instead of two seems to solve theoval problem (but why ???) style symbol "dots" size 8 color 204 102 0 outlinecolor 102 51 0 end I dont understand how GAP is supposed working: with GAP 2, I had ~10px between dots, with GAP 3, I had ~18px between dots, with GAP 4, I had ~26px between dots whats the logic ? ----- Original Message -----*From:* thomas bonfort <mailto:[email protected]> *To:* Oliver Christen <mailto:[email protected]>*Cc:* [email protected] <mailto:[email protected]> *Sent:* Tuesday, January 12, 2010 4:36 PM*Subject:* Re: [mapserver-users] symbol circle (ellipse)rendered not round but oval symbol name dots type ellipse points 1 1 end gap 20 end ... style symbol "dots" size 8 color r g b outlinecolor r g b end On Tue, Jan 12, 2010 at 16:31, Oliver Christen <[email protected] <mailto:[email protected]>> wrote: Hi Thomas :)thanks for the answer, but sadely it didnt solve my problem:here are a few tests I did: using GAP 20 gave me really weird result: http://dev.camptocamp.com/~ochriste/tilecache6_gap_20.png <http://dev.camptocamp.com/%7Eochriste/tilecache6_gap_20.png>using PATTERN 1 22 END gave me better result, but thedot are still slightly oval: http://dev.camptocamp.com/~ochriste/tilecache7_pattern.png <http://dev.camptocamp.com/%7Eochriste/tilecache7_pattern.png>I wondered if the visual effect may have come from the fact im pilling up two circle one over the other, buteven when trying to display only the outer or inner circles, the circle are still slightly off: http://dev.camptocamp.com/~ochriste/tilecache4_outercircle.png <http://dev.camptocamp.com/%7Eochriste/tilecache4_outercircle.png> http://dev.camptocamp.com/~ochriste/tilecache5_innercircle.png <http://dev.camptocamp.com/%7Eochriste/tilecache5_innercircle.png> (both at once http://dev.camptocamp.com/~ochriste/tilecache3_bothcircle.png <http://dev.camptocamp.com/%7Eochriste/tilecache3_bothcircle.png>) any other idea? ^_^ ----- Original Message ----- *From:* thomas bonfort <mailto:[email protected]> *To:* Oliver Christen <mailto:[email protected]> *Cc:* [email protected] <mailto:[email protected]> *Sent:* Tuesday, January 12, 2010 3:18 PM *Subject:* Re: [mapserver-users] symbol circle (ellipse) rendered not round but oval hi Oliver :)try with GAP 20 instead of STYLE 1 20 END (which isdeprecated btw, use PATTERN now) cheers, thomas On Tue, Jan 12, 2010 at 15:04, Oliver Christen <[email protected] <mailto:[email protected]>> wrote: hello I have a weird problem with symbology.Im rendering a line with dots, but the dots arenot round but slightly oval, see image http://dev.camptocamp.com/~ochriste/tilecache.png <http://dev.camptocamp.com/%7Eochriste/tilecache.png> Any idea what could be the cause ? Here is my symbol definition: SYMBOL NAME "linie-gepunkt10" TYPE ELLIPSE POINTS 1 1 END STYLE 1 20 END FILLED TRUE END and my layer's class definition: CLASS EXPRESSION "3" MAXSCALEDENOM 200001 STYLE SYMBOL "linie-gepunkt10" SIZE 10 COLOR 102 51 0 END STYLE SYMBOL "linie-gepunkt10" SIZE 8 COLOR 204 102 0 END END and the map outputformat: OUTPUTFORMAT NAME png DRIVER "AGG/PNG" MIMETYPE "image/png" IMAGEMODE RGBA EXTENSION "png" FORMATOPTION "INTERLACE=OFF" END _______________________________________________ mapserver-users mailing list [email protected] <mailto:[email protected]> http://lists.osgeo.org/mailman/listinfo/mapserver-users-- Håvard Tveite Department of Mathematical Sciences and Technology, UMB Drøbakveien 31, POBox 5003, N-1432 Ås, NORWAY Phone: +47 64965483 Fax: +47 64965401 http://www.umb.no/imt/_______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users_______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users-- Håvard Tveite Department of Mathematical Sciences and Technology, UMB Drøbakveien 31, POBox 5003, N-1432 Ås, NORWAY Phone: +47 64965483 Fax: +47 64965401 http://www.umb.no/imt/
_______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
