[mapserver-users] Polygon border with marker line symbol
Anton Bakker
anton.bakker at geocat.net
Thu Oct 12 04:58:18 PDT 2017
Hi Jukka,
I did not really think of that. I ended up using a line dataset, which solved all my issues. Thanks for thinking outside the polygon.
Cheers,
Anton
> On 12 Oct 2017, at 10:59, Rahkonen Jukka (MML) <jukka.rahkonen at maanmittauslaitos.fi> wrote:
>
> Hi,
>
> I fear that you will run into another problem later because polygons are closed rings and therefore common borders will be drawn two times. Because of that rendering with sparse symbols may look ugly.
>
> I would consider preprocessing the data so that you will have a clean line data where duplicate sections of the borders have been removed for rendering the borders and polygon layer for the rest.
>
> -Jukka Rahkonen-
>
> Lähettäjä: mapserver-users [mailto:mapserver-users-bounces at lists.osgeo.org <mailto:mapserver-users-bounces at lists.osgeo.org>] Puolesta Anton Bakker
> Lähetetty: 12. lokakuuta 2017 11:55
> Vastaanottaja: lars.schylberg at blixtmail.se
> Kopio: mapserver-users at lists.osgeo.org
> Aihe: Re: [mapserver-users] Polygon border with marker line symbol
>
> Hi Lars,
>
> On second thought setting the TYPE to LINE does not fit my usecase exactly. I would like to achieve the following for a polygon layer: https://i.imgur.com/3stwHw4.png <https://i.imgur.com/3stwHw4.png> . So the two requirements for the symbology are:
> - Marker line symbol on border
> - Polygon fill
>
> With setting the type to line I can only achieve the marker line symbol, but I cannot specify a fill: https://i.imgur.com/tk6vJ4b.png <https://i.imgur.com/tk6vJ4b.png> . Do you know if there is a way of achieving this effect?
>
> I guess it maybe could be done by grouping two layers, together and treating them as one, but preferably the solution is restricted to one layer.
>
> Cheers,
> Anton
>
>
> On 12 Oct 2017, at 10:22, Anton Bakker <anton.bakker at geocat.net <mailto:anton.bakker at geocat.net>> wrote:
>
> Hi Lars,
>
> The fill of the square was set to true, but I guess that is what happens when you only set the OUTLINECOLOR and a SYMBOL on a polygon type style.
>
> In any case setting the type of the polygon layer to LINE did the trick. I was not aware this was possible, but it does make sense. Thanks for the quick answer!
>
> Kind regards,
> Anton
>
> On 11 Oct 2017, at 18:50, lars.schylberg at blixtmail.se <mailto:lars.schylberg at blixtmail.se> wrote:
>
> Hi,
>
> I guess that your symbol definition of square says filled false, it should be be filled true. Do another symbol.
> Next thing is that if You would like to do fancy borders symbols along a polygon you could set LAYER - TYPE to line.
> The syntax becomes easier. Last thing is to get the symbols to rotate with the line you should set gap to a negative value.
>
> I made a small example to show this. Save this to line-with-squares.map and run it with:
> shp2img -m line-square-test.map -o line-square-test.png
>
> /Lars S.
> _________________
>
> MAP
> SIZE 1000 1000
> IMAGETYPE png24
> EXTENT -30 -10 60 30
> UNITS DD
>
> SYMBOL
> NAME "square_filled"
> TYPE VECTOR
> POINTS
> 0 0
> 0 1
> 1 1
> 1 0
> 0 0
> END
> FILLED TRUE
> END
>
> LAYER # Simple polygon
> STATUS DEFAULT
> TYPE LINE
> FEATURE
> POINTS
> 5 25
> 25 20
> 45 20
> 35 15
> 50 0
> 0 5
> 5 25
> END # Points
> END # Feature
>
> CLASS
> NAME "Symboltest"
> STYLE
> SYMBOL "square_filled"
> COLOR 255 0 0
> SIZE 12
> INITIALGAP 15
> GAP -30
> OUTLINECOLOR 0 0 0
> WIDTH 2.0
> END #STYLE
> END # CLASS
> END # LAYER
> END # MAP
>
> ---------------------------
>
> -----Originalmeddelande-----
> Från: "Anton Bakker" <anton.bakker at geocat.net <mailto:anton.bakker at geocat.net>>
> Till: mapserver-users at lists.osgeo.org <mailto:mapserver-users at lists.osgeo.org>
> Datum: 2017-10-11 17:45
> Ämne: [mapserver-users] Polygon border with marker line symbol
>
> Hi list,
>
> I am trying to create the following symbology in MapServer, a marker line symbol on the border of a polygon, see the following ArcMap screenshot (https://i.imgur.com/9qN16tx.png <https://i.imgur.com/9qN16tx.png>).
>
> I tried the two following options, but could not manage to recreate the above symbology:
>
> 1. Renders with marker fill on polygon (https://i.imgur.com/sFFznbq.png <https://i.imgur.com/sFFznbq.png>):
>
> CLASS
> NAME "countries_europe"
> STYLE
> ANTIALIAS TRUE
> COLOR 204 204 204
> END
> STYLE
> ANTIALIAS TRUE
> GAP 30
> OUTLINECOLOR 0 0 0
> COLOR 255 0 0
> SIZE 6
> SYMBOL 'square'
> WIDTH 1.0
> END
> END
>
> 2. Renders with marker line symbol on polygon border (https://i.imgur.com/Qwrw8wP.png <https://i.imgur.com/Qwrw8wP.png>), but the marker is missing the fill:
>
> CLASS
> NAME "countries_europe"
> STYLE
> ANTIALIAS TRUE
> COLOR 204 204 204
> END
> STYLE
> ANTIALIAS TRUE
> GAP 30
> OUTLINECOLOR 0 0 0
> SIZE 6
> SYMBOL 'square'
> WIDTH 1.0
> END
> END
>
> Does anyone know whether it is possible to achieve this symbology? It seems the only way to set a picture line symbol on the border of a polygon is to only set the outlinecolor, but then there is no way to set the fill color for the marker. I could not find any any information about this in the documentation or the mailing list.
>
> Thanks and kind regards,
> Anton Bakker
>
> software developer at geocat <http://www.geocat.net/>
> tel. +31 318 416 664
>
>
>
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