yes, it would be nice to have both possibilities: absolute spacing, and size-scaled spacing. would there be a way to do this without having the need to add yet another mapfile keyword?<br><br>regards,<br>thomas<br><br><div class="gmail_quote">
On Fri, Jan 15, 2010 at 10:03, Rahkonen Jukka <span dir="ltr"><<a href="mailto:Jukka.Rahkonen@mmmtike.fi">Jukka.Rahkonen@mmmtike.fi</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi,<br>
<br>
Could there be an alternative to give GAP that is relative to symbol size? Like<br>
RELATIVE_GAP=(x*SYMBOLSIZE) where SYMBOLSIZE is the width of a symbol? Should not be too heavy to calculate but would it lead to correct result?<br>
<font color="#888888"><br>
-Jukka Rahkonen-<br>
</font><div><div></div><div class="h5"><br>
> Havard Tveite wrote:<br>
><br>
> I think it is very important that there is a strong<br>
> relationship between the size of the symbols and the<br>
> spacing between the symbols. That makes scalable<br>
> patterned symbols possible. So I am happy with the<br>
> current (intended) behaviour.<br>
><br>
> What is needed is good documentation with examples. I<br>
> think that there is work in progress on changing some of<br>
> the mechanisms for symbology in Mapserver. When this<br>
> work has been "finalised" I will be more than willing<br>
> to contribute to the documentation.<br>
><br>
> Håvard<br>
><br>
> Oliver Christen wrote:<br>
> > mmm, in my opinion it would be clearer if the GAP didnt depend from<br>
> > anything, set the GAP to 10 would make you a spacing of<br>
> 10px between each<br>
> > symbols border, whatever the values of the symbol POINTS.<br>
> > but that may be a change too important ?<br>
> ><br>
> > Oliver<br>
> ><br>
> >> Stephen Woodbridge wrote:<br>
> >>> So if I want ten pixel ellipses with a 1, 2, or 3 pixels<br>
> gap how would<br>
> >>> you specify that?<br>
> >>><br>
> >>> points 10 10 gap 1 (or 2 or 3)?<br>
> >> Yes, if the rendering behaviour had been according to my<br>
> >> preferences,<br>
> >> POINTS 10 10 END<br>
> >> GAP 1 (or 2 or 3)<br>
> >> should do it (if you had specified SIZE 10 in the STYLE).<br>
> >> You specify the gap, and not the centre to centre distance<br>
> >> between the ellipses.<br>
> >><br>
> >> But currently, this is not the behaviour.<br>
> >> Currently (with AGG in 5.6.0) you would have to specify:<br>
> >> POINTS 10 10 END<br>
> >> GAP 6 (or 7 or 8)<br>
> >> to get something close (if you specify SIZE 10 in the STYLE).<br>
> >><br>
> >> Something seems to be wrong when the GAP is close to<br>
> >> half the diameter specified in POINTS - some of the gaps<br>
> >> will be as expected, while others are larger (closer to the<br>
> >> actual number specified in GAP).<br>
> >><br>
> >> Håvard<br>
> >><br>
> >>> -Steve W<br>
> >>><br>
> >>> Havard Tveite wrote:<br>
> >>>> If Thomas B. agrees, I think it would be reasonable to also<br>
> >>>> open a bug on the gap calculation.<br>
> >>>> In my opinion, since the word "gap" is used, the correct<br>
> >>>> way to specify a symbol with ellipses that has the same<br>
> >>>> gap between them as the diameter of the ellipses should be<br>
> >>>> as follows:<br>
> >>>><br>
> >>>> symbol<br>
> >>>> name dots<br>
> >>>> type ellipse<br>
> >>>> points 1 1 end<br>
> >>>> gap 1<br>
> >>>> end<br>
> >>>><br>
> >>>> or an equivalent "scaled" version such as:<br>
> >>>><br>
> >>>> symbol<br>
> >>>> name dots<br>
> >>>> type ellipse<br>
> >>>> points 23 23 end<br>
> >>>> gap 23<br>
> >>>> end<br>
> >>>><br>
> >>>> The actual size of the ellipses (and the width of the gaps)<br>
> >>>> should be determined by the SIZE in CLASS-> STYLE. If<br>
> >>>> SIZE is 10, the ellipses should have a 10 pixel diameter<br>
> >>>> (and should have a 10 pixel gap between them).<br>
> >>>><br>
> >>>> I have been hesitant to file bugs regarding symbology, since<br>
> >>>> the documentation on symbology is lacking and there is not<br>
> >>>> complete agreement on how some of the things that has to do<br>
> >>>> with symbology should work. There have also been<br>
> >>>> discussions on changing some behaviour and mechanisms for<br>
> >>>> symbology.<br>
> >>>> First we have to agree on how things should work and document<br>
> >>>> it, then we can file bugs if behaviour is not as expected.<br>
> >>>><br>
> >>>> Håvard<br>
> >>>><br>
> >>>> Oliver Christen wrote:<br>
> >>>>> Hi Steve<br>
> >>>>><br>
> >>>>> I followed your suggestion and opened a documentation bug<br>
> >>>>><br>
> >>>>> thanks<br>
> >>>>> Oliver<br>
> >>>>><br>
> >>>>>> Hi guys,<br>
> >>>>>><br>
> >>>>>> I haven't followed this whole thread but I think it<br>
> should be better<br>
> >>>>>> documented so people can understand how to use this.<br>
> Please write a<br>
> >>>>>> doc bug and put as much information in the bug about<br>
> how this works as<br>
> >>>>>> you have been able to discover.<br>
> >>>>>><br>
> >>>>>> Thanks,<br>
> >>>>>> -Steve W<br>
> >>>>>><br>
> >>>>>> Oliver Christen wrote:<br>
> >>>>>>> Thank you Håvard<br>
> >>>>>>> I see you have changed "points 1 1 end" by "points 8 8 end".<br>
> >>>>>>> Tell me if im wrong, but these values are only used<br>
> to render the<br>
> >>>>>>> proportions of the elipse but not it's size, is that correct?<br>
> >>>>>>> so if I understand correctly, using larger values for<br>
> the elipse<br>
> >>>>>>> width/height refine the rendering of the vectorised<br>
> dot geometry ?<br>
> >>>>>>><br>
> >>>>>>> regards<br>
> >>>>>>> Oliver<br>
> >>>>>>><br>
> >>>>>>>> Dear Oliver Christen,<br>
> >>>>>>>><br>
> >>>>>>>> Using Mapserver 5.6.0 and AGG rendering, you can achieve what<br>
> >>>>>>>> you want by using a combination of ellipse size and gap size<br>
> >>>>>>>> in the symbol definition.<br>
> >>>>>>>> There is something strange in the calculations (a gap of<br>
> >>>>>>>> about half the ellipse size seems to produce<br>
> touching symbols),<br>
> >>>>>>>> so in your case, you could try to use 8 as the<br>
> diameter of the<br>
> >>>>>>>> ellipses, and 20 + 4 (half the ellipse size) = 24 as the<br>
> >>>>>>>> gap:<br>
> >>>>>>>><br>
> >>>>>>>> symbol<br>
> >>>>>>>> name dots<br>
> >>>>>>>> type ellipse<br>
> >>>>>>>> points 8 8 end<br>
> >>>>>>>> gap 24<br>
> >>>>>>>> end<br>
> >>>>>>>><br>
> >>>>>>>><br>
> >>>>>>>> Håvard<br>
> >>>>>>>><br>
> >>>>>>>> Oliver Christen wrote:<br>
> >>>>>>>>> thank you Thomas<br>
> >>>>>>>>><br>
> >>>>>>>>> so if I have a dot of, for example, 8px and I want<br>
> a space pf 20px<br>
> >>>>>>>>> between the dots, I need a gap of 20/8 = 2.5<br>
> >>>>>>>>><br>
> >>>>>>>>> but as far as I can see, Mapserver doesnt like<br>
> none-integer value<br>
> >>>>>>>>> for gap.<br>
> >>>>>>>>><br>
> >>>>>>>>> what should I do? :(<br>
> >>>>>>>>><br>
> >>>>>>>>> 2010/1/12 thomas bonfort <<a href="mailto:thomas.bonfort@gmail.com">thomas.bonfort@gmail.com</a><br>
> >>>>>>>>> <mailto:<a href="mailto:thomas.bonfort@gmail.com">thomas.bonfort@gmail.com</a>>><br>
> >>>>>>>>><br>
> >>>>>>>>> gap in pixels = symbol->gap * style->size<br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> >>>>>>>>> On Tue, Jan 12, 2010 at 16:52, Oliver Christen<br>
> >>>>>>>>> <<a href="mailto:oliver.christen@camptocamp.com">oliver.christen@camptocamp.com</a><br>
> >>>>>>>>> <mailto:<a href="mailto:oliver.christen@camptocamp.com">oliver.christen@camptocamp.com</a>>> wrote:<br>
> >>>>>>>>><br>
> >>>>>>>>> GAP 20 is really giving unwanted result:<br>
> >>>>>>>>> <a href="http://dev.camptocamp.com/%7Eochriste/tilecache9.png" target="_blank">http://dev.camptocamp.com/~ochriste/tilecache9.png</a><br>
> >>>>>>>>><br>
> <<a href="http://dev.camptocamp.com/%7Eochriste/tilecache9.png" target="_blank">http://dev.camptocamp.com/%7Eochriste/tilecache9.png</a>><br>
> >>>>>>>>> though using only one style instead of two<br>
> seems to solve<br>
> >>>>>>>>> the<br>
> >>>>>>>>> oval problem (but why ???)<br>
> >>>>>>>>> style<br>
> >>>>>>>>> symbol "dots"<br>
> >>>>>>>>> size 8<br>
> >>>>>>>>> color 204 102 0<br>
> >>>>>>>>> outlinecolor 102 51 0<br>
> >>>>>>>>> end<br>
> >>>>>>>>> I dont understand how GAP is supposed working:<br>
> >>>>>>>>> with GAP 2, I had ~10px between dots,<br>
> >>>>>>>>> with GAP 3, I had ~18px between dots,<br>
> >>>>>>>>> with GAP 4, I had ~26px between dots<br>
> >>>>>>>>> whats the logic ?<br>
> >>>>>>>>><br>
> >>>>>>>>> ----- Original Message -----<br>
> >>>>>>>>> *From:* thomas bonfort<br>
> >>>>>>>>> <mailto:<a href="mailto:thomas.bonfort@gmail.com">thomas.bonfort@gmail.com</a>><br>
> >>>>>>>>> *To:* Oliver Christen<br>
> >>>>>>>>> <mailto:<a href="mailto:oliver.christen@camptocamp.com">oliver.christen@camptocamp.com</a>><br>
> >>>>>>>>> *Cc:* <a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><br>
> >>>>>>>>> <mailto:<a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a>><br>
> >>>>>>>>> *Sent:* Tuesday, January 12, 2010 4:36 PM<br>
> >>>>>>>>> *Subject:* Re: [mapserver-users] symbol circle<br>
> >>>>>>>>> (ellipse)<br>
> >>>>>>>>> rendered not round but oval<br>
> >>>>>>>>><br>
> >>>>>>>>> symbol<br>
> >>>>>>>>> name dots<br>
> >>>>>>>>> type ellipse<br>
> >>>>>>>>> points 1 1 end<br>
> >>>>>>>>> gap 20<br>
> >>>>>>>>> end<br>
> >>>>>>>>><br>
> >>>>>>>>> ...<br>
> >>>>>>>>><br>
> >>>>>>>>> style<br>
> >>>>>>>>> symbol "dots"<br>
> >>>>>>>>> size 8<br>
> >>>>>>>>> color r g b<br>
> >>>>>>>>> outlinecolor r g b<br>
> >>>>>>>>> end<br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> >>>>>>>>> On Tue, Jan 12, 2010 at 16:31, Oliver Christen<br>
> >>>>>>>>> <<a href="mailto:oliver.christen@camptocamp.com">oliver.christen@camptocamp.com</a><br>
> >>>>>>>>> <mailto:<a href="mailto:oliver.christen@camptocamp.com">oliver.christen@camptocamp.com</a>>> wrote:<br>
> >>>>>>>>><br>
> >>>>>>>>> Hi Thomas :)<br>
> >>>>>>>>> thanks for the answer, but sadely<br>
> it didnt solve<br>
> >>>>>>>>> my problem:<br>
> >>>>>>>>> here are a few tests I did:<br>
> >>>>>>>>> using GAP 20 gave me really weird result:<br>
> >>>>>>>>><br>
> >>>>>>>>> <a href="http://dev.camptocamp.com/%7Eochriste/tilecache6_gap_20.png" target="_blank">http://dev.camptocamp.com/~ochriste/tilecache6_gap_20.png</a><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> <<a href="http://dev.camptocamp.com/%7Eochriste/tilecache6_gap_20.png" target="_blank">http://dev.camptocamp.com/%7Eochriste/tilecache6_gap_20.png</a>><br>
> >>>>>>>>> using PATTERN 1 22 END gave me<br>
> better result, but<br>
> >>>>>>>>> the<br>
> >>>>>>>>> dot are still slightly oval:<br>
> >>>>>>>>><br>
> >>>>>>>>> <a href="http://dev.camptocamp.com/%7Eochriste/tilecache7_pattern.png" target="_blank">http://dev.camptocamp.com/~ochriste/tilecache7_pattern.png</a><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> <<a href="http://dev.camptocamp.com/%7Eochriste/tilecache7_pattern.png" target="_blank">http://dev.camptocamp.com/%7Eochriste/tilecache7_pattern.png</a>><br>
> >>>>>>>>> I wondered if the visual effect<br>
> may have come from<br>
> >>>>>>>>> the<br>
> >>>>>>>>> fact im pilling up two circle one<br>
> over the other,<br>
> >>>>>>>>> but<br>
> >>>>>>>>> even when trying to display only<br>
> the outer or inner<br>
> >>>>>>>>> circles, the circle are still slightly off:<br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> <a href="http://dev.camptocamp.com/%7Eochriste/tilecache4_outercircle.png" target="_blank">http://dev.camptocamp.com/~ochriste/tilecache4_outercircle.png</a><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> <<a href="http://dev.camptocamp.com/%7Eochriste/tilecache4_outercircle.png" target="_blank">http://dev.camptocamp.com/%7Eochriste/tilecache4_outercircle.png</a>><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> <a href="http://dev.camptocamp.com/%7Eochriste/tilecache5_innercircle.png" target="_blank">http://dev.camptocamp.com/~ochriste/tilecache5_innercircle.png</a><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> <<a href="http://dev.camptocamp.com/%7Eochriste/tilecache5_innercircle.png" target="_blank">http://dev.camptocamp.com/%7Eochriste/tilecache5_innercircle.png</a>><br>
> >>>>>>>>> (both at once<br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> <a href="http://dev.camptocamp.com/%7Eochriste/tilecache3_bothcircle.png" target="_blank">http://dev.camptocamp.com/~ochriste/tilecache3_bothcircle.png</a><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> <<a href="http://dev.camptocamp.com/%7Eochriste/tilecache3_bothcircle.png" target="_blank">http://dev.camptocamp.com/%7Eochriste/tilecache3_bothcircle.png</a>>)<br>
> >>>>>>>>> any other idea? ^_^<br>
> >>>>>>>>><br>
> >>>>>>>>> ----- Original Message -----<br>
> >>>>>>>>> *From:* thomas bonfort<br>
> >>>>>>>>> <mailto:<a href="mailto:thomas.bonfort@gmail.com">thomas.bonfort@gmail.com</a>><br>
> >>>>>>>>> *To:* Oliver Christen<br>
> >>>>>>>>> <mailto:<a href="mailto:oliver.christen@camptocamp.com">oliver.christen@camptocamp.com</a>><br>
> >>>>>>>>> *Cc:* <a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><br>
> >>>>>>>>> <mailto:<a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a>><br>
> >>>>>>>>> *Sent:* Tuesday, January 12,<br>
> 2010 3:18 PM<br>
> >>>>>>>>> *Subject:* Re:<br>
> [mapserver-users] symbol circle<br>
> >>>>>>>>> (ellipse) rendered not round but oval<br>
> >>>>>>>>><br>
> >>>>>>>>> hi Oliver :)<br>
> >>>>>>>>><br>
> >>>>>>>>> try with GAP 20 instead of<br>
> STYLE 1 20 END<br>
> >>>>>>>>> (which is<br>
> >>>>>>>>> deprecated btw, use PATTERN now)<br>
> >>>>>>>>><br>
> >>>>>>>>> cheers,<br>
> >>>>>>>>> thomas<br>
> >>>>>>>>><br>
> >>>>>>>>> On Tue, Jan 12, 2010 at 15:04,<br>
> Oliver Christen<br>
> >>>>>>>>> <<a href="mailto:oliver.christen@camptocamp.com">oliver.christen@camptocamp.com</a><br>
> >>>>>>>>><br>
> <mailto:<a href="mailto:oliver.christen@camptocamp.com">oliver.christen@camptocamp.com</a>>> wrote:<br>
> >>>>>>>>><br>
> >>>>>>>>> hello<br>
> >>>>>>>>><br>
> >>>>>>>>> I have a weird problem with<br>
> symbology.<br>
> >>>>>>>>> Im rendering a line with<br>
> dots, but the dots<br>
> >>>>>>>>> are<br>
> >>>>>>>>> not round but slightly<br>
> oval, see image<br>
> >>>>>>>>><br>
> >>>>>>>>> <a href="http://dev.camptocamp.com/%7Eochriste/tilecache.png" target="_blank">http://dev.camptocamp.com/~ochriste/tilecache.png</a><br>
> >>>>>>>>><br>
> >>>>>>>>> <<a href="http://dev.camptocamp.com/%7Eochriste/tilecache.png" target="_blank">http://dev.camptocamp.com/%7Eochriste/tilecache.png</a>><br>
> >>>>>>>>><br>
> >>>>>>>>> Any idea what could be the cause ?<br>
> >>>>>>>>><br>
> >>>>>>>>> Here is my symbol definition:<br>
> >>>>>>>>><br>
> >>>>>>>>> SYMBOL<br>
> >>>>>>>>> NAME "linie-gepunkt10"<br>
> >>>>>>>>> TYPE ELLIPSE<br>
> >>>>>>>>> POINTS<br>
> >>>>>>>>> 1 1<br>
> >>>>>>>>> END<br>
> >>>>>>>>> STYLE<br>
> >>>>>>>>> 1 20<br>
> >>>>>>>>> END<br>
> >>>>>>>>> FILLED TRUE<br>
> >>>>>>>>> END<br>
> >>>>>>>>><br>
> >>>>>>>>> and my layer's class definition:<br>
> >>>>>>>>><br>
> >>>>>>>>> CLASS<br>
> >>>>>>>>> EXPRESSION "3"<br>
> >>>>>>>>> MAXSCALEDENOM 200001<br>
> >>>>>>>>> STYLE<br>
> >>>>>>>>> SYMBOL "linie-gepunkt10"<br>
> >>>>>>>>> SIZE 10<br>
> >>>>>>>>> COLOR 102 51 0<br>
> >>>>>>>>> END<br>
> >>>>>>>>> STYLE<br>
> >>>>>>>>> SYMBOL "linie-gepunkt10"<br>
> >>>>>>>>> SIZE 8<br>
> >>>>>>>>> COLOR 204 102 0<br>
> >>>>>>>>> END<br>
> >>>>>>>>> END<br>
> >>>>>>>>><br>
> >>>>>>>>> and the map outputformat:<br>
> >>>>>>>>><br>
> >>>>>>>>> OUTPUTFORMAT<br>
> >>>>>>>>> NAME png<br>
> >>>>>>>>> DRIVER "AGG/PNG"<br>
> >>>>>>>>> MIMETYPE "image/png"<br>
> >>>>>>>>> IMAGEMODE RGBA<br>
> >>>>>>>>> EXTENSION "png"<br>
> >>>>>>>>> FORMATOPTION "INTERLACE=OFF"<br>
> >>>>>>>>> END<br>
> >>>>>>>>><br>
> >>>>>>>>> _______________________________________________<br>
> >>>>>>>>> mapserver-users mailing list<br>
> >>>>>>>>> <a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><br>
> >>>>>>>>><br>
> <mailto:<a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a>><br>
> >>>>>>>>><br>
> >>>>>>>>> <a href="http://lists.osgeo.org/mailman/listinfo/mapserver-users" target="_blank">http://lists.osgeo.org/mailman/listinfo/mapserver-users</a><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> >>>>>>>>><br>
> >>>>>>>> --<br>
> >>>>>>>> Håvard Tveite<br>
> >>>>>>>> Department of Mathematical Sciences and Technology, UMB<br>
> >>>>>>>> Drøbakveien 31, POBox 5003, N-1432 Ås, NORWAY<br>
> >>>>>>>> Phone: +47 64965483 Fax: +47 64965401 <a href="http://www.umb.no/imt/" target="_blank">http://www.umb.no/imt/</a><br>
> >>>>>>>><br>
> >>>>>>> _______________________________________________<br>
> >>>>>>> mapserver-users mailing list<br>
> >>>>>>> <a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><br>
> >>>>>>> <a href="http://lists.osgeo.org/mailman/listinfo/mapserver-users" target="_blank">http://lists.osgeo.org/mailman/listinfo/mapserver-users</a><br>
> >>>>> _______________________________________________<br>
> >>>>> mapserver-users mailing list<br>
> >>>>> <a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><br>
> >>>>> <a href="http://lists.osgeo.org/mailman/listinfo/mapserver-users" target="_blank">http://lists.osgeo.org/mailman/listinfo/mapserver-users</a><br>
> >>>>><br>
> >>><br>
> >> --<br>
> >> Håvard Tveite<br>
> >> Department of Mathematical Sciences and Technology, UMB<br>
> >> Drøbakveien 31, POBox 5003, N-1432 Ås, NORWAY<br>
> >> Phone: +47 64965483 Fax: +47 64965401 <a href="http://www.umb.no/imt/" target="_blank">http://www.umb.no/imt/</a><br>
> >><br>
> ><br>
> ><br>
><br>
> --<br>
> Håvard Tveite<br>
> Department of Mathematical Sciences and Technology, UMB<br>
> Drøbakveien 31, POBox 5003, N-1432 Ås, NORWAY<br>
> Phone: +47 64965483 Fax: +47 64965401 <a href="http://www.umb.no/imt/" target="_blank">http://www.umb.no/imt/</a><br>
> _______________________________________________<br>
> mapserver-users mailing list<br>
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><br>
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</div></div></blockquote></div><br>