Hello everybody,I managed to draw the arrows for the polyline layer, and they look ok, but (for a strange reason) I am required to draw these arrows both ways sometimes for the same element. I would like for the arrows to overlap, but instead only one of them is displayed. I attached 3 small pictures (sorry for the spam, but I hope it's not against the mailing list policy) with the displayed outcome in these three cases:
Case 1: displaying arrows with the 'right' symbol
CLASS
NAME "Right"
EXPRESSION /^FO040314$/
STYLE
SYMBOL right
SIZE 24
COLOR 51 102 0
END
END
CLASS
NAME "Left"
EXPRESSION /SUPERCALIFRAGILISTICEXPIALIDOCIOUS/
STYLE
SYMBOL left
SIZE 24
COLOR 102 51 0
END
END
Case 2:
displaying arrows with the 'left' symbol
CLASS
NAME "Right"
EXPRESSION /SUPERCALIFRAGILISTICEXPIALIDOCIOUS/
STYLE
SYMBOL right
SIZE 24
COLOR 51 102 0
END
END
CLASS
NAME "Left"
EXPRESSION /^FO040314$/
STYLE
SYMBOL left
SIZE 24
COLOR 102 51 0
END
END
Case 3: displaying both arrows on the same element:
CLASS
NAME "Right"
EXPRESSION /^FO040314$/
STYLE
SYMBOL right
SIZE 24
COLOR 51 102 0
END
END
CLASS
NAME "Left"
EXPRESSION /^FO040314$/
STYLE
SYMBOL left
SIZE 24
COLOR 102 51 0
END
END
How can I display both arrows on the same object (or do they display,
but they overlap completely?)
Thanks for your help, Adrian Adrian Popa wrote:
Can you please clarify to me what you mean by data that is oriented? When I built the road layer from GPS data, I added polylines starting from point A->...->B and recorded all the inflections in the road between A and B.By ordered data you mean the direction in this case is A->B?If I wanted to reverse the direction I'd have to write the data to the shapefile in the order B->A?Thanks thomas bonfort wrote:it's the direction of the underlying geometry that's used. so you either need * data that's oriented, and a single boolean filed indicating if its oneway or not, * or an unoriented geometry, and a field indicating if the oneway direction is reversed or not wrt the geometry (and two directional symbols, one with > , the other with <) cheers, thomas On Mon, Nov 10, 2008 at 12:01, Adrian Popa <[EMAIL PROTECTED]> wrote:Hello Thomas, Thank you very much for your tip! It's great. However, I have a question: How can I select the direction of the arrow? I mean, between A and B I have a road segment: A----------------B Right now, it renders as A---->---->----->-----B, but I want it to render as A----<------<-----<------B. My question is: how does mapserver select the order of A and B? If I understand this, I can create another symbol and use it for the reverse path. Thanks, Adrian thomas bonfort wrote: Hi, for repeated arrow symbols, you can use a truetype (or image, or vector) symbol, with a negative GAP: SYMBOL NAME oneway TYPE TRUETYPE CHARACTER '>' FONT arial GAP -20 END and then in your layer: STYLE SYMBOL oneway SIZE 8 COLOR 0 0 0 END cheers, thomas On Mon, Nov 10, 2008 at 10:51, Adrian Popa <[EMAIL PROTECTED]> wrote: Hello everybody, I have a map that displays roads stored in a polyline format. I would like to mark one-way streets with an arrow symbol drawn on top of the road itself. The symbol can be as small as possible (for beginning I would like to be able to superimpose it anywhere between the street ends, and later on I will lock it to be next to one of the ends). I can already select the one way streets based on the following template: CLASS Name "OneWay" EXPRESSION /^FO040127$|^FO040132$|^FO040139$|^FO040120$|^FO040104$|^FO040131$|^FO040146$|^FO040129$/ STYLE COLOR 255 0 0 WIDTH 4 END LABEL COLOR 0 0 255 TYPE TRUETYPE FONT arial SIZE 8 ANTIALIAS TRUE POSITION AUTO ANGLE AUTO PARTIALS TRUE MINDISTANCE 0 BUFFER 0 END END Can you show me an example of how to draw such a symbol on top of the layer? Thank you Adrian _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users -- Adrian Popa Network Engineer Romtelecom S.A. Divizia Centrul National de Operare Retea Departament Transport IP & Metro Compartiment IP Core-- Adrian Popa Network Engineer Romtelecom S.A. Divizia Centrul National de Operare Retea Departament Transport IP & Metro Compartiment IP Core------------------------------------------------------------------------_______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
-- Adrian Popa Network Engineer Romtelecom S.A. Divizia Centrul National de Operare Retea Departament Transport IP & Metro Compartiment IP Core
<<inline: case1-right.png>>
<<inline: case2-left.png>>
<<inline: case3-right-left.png>>
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