CSharp-Mapscript: setSymbolSet doesn't work?!
Tamas Szekeres
szekerest at GMAIL.COM
Wed Jul 19 08:36:02 PDT 2006
Hi,
You may also have to set the default symbol size to greater than 0,
like for example:
symbol.sizex = 0;
symbol.sizey = 0;
I would also suggest to use layerObj(mapObj map) instead of inserlayer
to avoid an unnecessary layer copy.
If the problem still persists it would be helpful if you could post a
sample application to be able to reproduce the error and find a fix
for it.
Best Regards,
Tamas
2006/7/19, Christian Wilmes <C.Wilmes at gmx.de>:
> Hi,
>
> thanks for your quick response Tamas, but the symbols don't work up to now.
>
> Normaly it should work with the gif-File in the parameterlist too, the gif-File exists on my System. But I tested it with your code for the symbolObj a lot of times, because that seems to be more simple. Directly before and after calling mapObj.draw() I saved the mapfile build by my Application. I tested both mapfiles in my Browser and both of them are working correct. I will insert the two mapfiles in this email.
>
> Here is my original code I use with some expressions:
>
> public class Controller
> {
> //myMapHandler is a type of the class MapHandler which handels Objects of the class Map. Map is a Subclass of mapObj
> private MapHandler myMapHandler = new MapHandler();
>
>
> public void InitializeLayers()
> {
>
> //PipelineLayer is a Subclass from layerObj
> //The first parameter in the Constructor is the mapObj, the second one the status of the Layer, the third one is the Connectionstring to my WFS-Server
> //I've got good reasons for giving null in the parameterlist for the mapObj and using the InsertLayer-Method later.
> //I tested it with giving directly the mapObj in the constructor, it also doesn't work
> PipelineLayer trajektorie = new PipelineLayer(null, true, "http://localhost/cgi-bin/mapserv.exe?");
>
> //Building the Symbol:
> symbolObj symbol = new symbolObj("mySymbol", null);
> symbol.type = (int)MS_SYMBOL_TYPE.MS_SYMBOL_VECTOR;
> symbol.filled = mapscript.MS_TRUE;
> lineObj line = new lineObj();
> line.add(new pointObj(1, 5, 0, 0));
> line.add(new pointObj(1, 3, 0, 0));
> line.add(new pointObj(3, 2, 0, 0));
> line.add(new pointObj(1, 1, 0, 0));
> line.add(new pointObj(1, 3, 0, 0));
> symbol.setPoints(line);
>
>
>
> ´ myMapHandler.Map.SymbolSet.appendSymbol(symbol);
>
>
>
> classObj classtest = new classObj(trajektorie);
> classtest.name = "test";
>
> styleObj myStyle = new styleObj(classtest);
> myStyle.symbolname = "mySymbol";
>
> myStyle.size = 150;
> myStyle.color = new colorObj(255, 0, 0, -1);
>
> myMapHandler.Map.SymbolSet.save(Environment.CurrentDirectory + @"\test.sym");
>
> myMapHandler.Map.InsertLayer(trajektorie, -1);
> // the Method Refresh Map is displayed above
> myMapHandler.Map.RefreshMap();
> }
> }
>
> public class Map : mapObj
> {
> :
> :
> public void RefreshMap()
> {
> Cursor.Current = Cursors.WaitCursor;
> try
> {
> lock (this)
> {
> this.Save(Environment.CurrentDirectory + @"\testBefore.map");
> using (imageObj image = this.draw())
> {
> this.Save(Environment.CurrentDirectory + @"\testAfter.map");
> byte[] img = image.getBytes();
> using (MemoryStream ms = new MemoryStream(img))
> {
> myImageHandler.ImageMap = Image.FromStream(ms);
> }
> }
> }
> }
> catch (Exception ex)
> {
> MessageBox.Show(ex.Message + "\n" + (ex.InnerException != null ? ex.InnerException.Message : "")
> , "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
> }
> finally
> {
> Cursor.Current = Cursors.Default;
> }
> }
> :
> :
> }
>
>
>
> I've got no idea where else I have to search the mistake, or is it even possible that there is a another Bug in the mapscript who is responsible for that?
>
>
> Best Regards
> Christian
> -------- Original-Nachricht --------
> Datum: Wed, 19 Jul 2006 00:57:19 +0200
> Von: Tamas Szekeres <szekerest at gmail.com>
> An: Christian Wilmes <C.Wilmes at gmx.de>
> Betreff: Re: Re: [UMN_MAPSERVER-USERS] CSharp-Mapscript: setSymbolSet doesn\'t work?!
>
> > Hi,
> >
> > Constructing symbolObj you are using:
> >
> > "symbolObj(string symbolname, string imagefile)"
> >
> > The second parameter - if exists - point to an image for rendering that
> > symbol.
> > In your case the followings should work:
> >
> > symbolObj mySymbol = new symbolObj("mySymbol", null);
> > mySymbol.type = (int)MS_SYMBOL_TYPE.MS_SYMBOL_VECTOR;
> > mySymbol.filled = mapscript.MS_TRUE;
> > lineObj line = new lineObj();
> > line.add(new pointObj(1, 5, 0, 0));
> > line.add(new pointObj(1, 3, 0, 0));
> > line.add(new pointObj(3, 2, 0, 0));
> > line.add(new pointObj(1, 1, 0, 0));
> > line.add(new pointObj(1, 3, 0, 0));
> > mySymbol.setPoints(line);
> > myMap.symbolset.appendSymbol(mySymbol);
> >
> > I haven't tested it so additional properties might be set, apologies.
> >
> > Tamas
> >
> >
> > 2006/7/18, Christian Wilmes <C.Wilmes at gmx.de>:
> > > Hi,
> > >
> > > sorry, myMapHandler.Map was my mistake. But he was only in the mail, I
> > just tried to create a very simple sample. Now I've changed my code for
> > using myMap.symbolset.appendSymbol but it still doesn't work:
> > >
> > > mapObj myMap = new mapObj("");
> > > symbolObj symbol = new symbolObj("mySymbol", directory);
> > > myMap.symbolSet.appendSymbol(symbol);
> > > :
> > > layerObj myLayer = new layerObj(null);
> > > myLayer.name = "RosoftWFS";
> > > myLayer.Type = MS_LAYER_TYPE.MS_LAYER_POINT;
> > > myLayer.Connectiontype = MS_CONNECTION_TYPE.MS_WFS;
> > > myLayer.Connection = "http://localhost/cgi-bin/mapserv.exe?";
> > > myLayer.metadata.set("wfs_typename", "myWFS");
> > > myLayer.metadata.set("wfs_version","1.0.0");
> > > myLayer.metadata.set("wfs_request_method", "GET");
> > > myLayer.metadata.set("wfs_service", "WFS");
> > > myLayer.setProjection("EPSG:31467");
> > >
> > > classObj c = new classObj(myLayer);
> > > c.name = "test";
> > >
> > > styleObj style = new styleObj(c);
> > > style.symbolname = "mySymbol";
> > > style.size = 150;
> > > style.color = new colorObj(255, 0, 255, 0);
> > > :
> > > myMap.insertLayer(myLayer, -1);
> > >
> > >
> > > Best Regards
> > > Christian
> > > -------- Original-Nachricht --------
> > > Datum: Mon, 17 Jul 2006 23:40:09 +0200
> > > Von: Tamas Szekeres <szekerest at GMAIL.COM>
> > > An: MAPSERVER-USERS at LISTS.UMN.EDU
> > > Betreff: Re: [UMN_MAPSERVER-USERS] CSharp-Mapscript: setSymbolSet
> > doesn\'t work?!
> > >
> > > > Christian,
> > > >
> > > > I'm a bit uncertain if you have added that symbolset to your map
> > > > (myMapHandler.Map may be another map reference :? ).
> > > > I would prefer using myMap.symbolset.appendSymbol instead of using
> > > > setsymbolset.
> > > >
> > > > If you are using constructors like "new classObj(myLayer)" and "new
> > > > styleObj(c)" you might want to use mapserver 4.8.4 to avoid nasty heap
> > > > corruptions and memory reference errors ;-) In that case using new
> > > > layerObj(mymap) seems better than insertLayer since the extra layer
> > > > copy is avoided.
> > > >
> > > > Best Regards,
> > > >
> > > > Tamas
> > > >
> > > >
> > > >
> > > > 2006/7/17, Christian Wilmes <C.Wilmes at gmx.de>:
> > > > > Hi All,
> > > > >
> > > > > I try to display a WFS-Layer with my application but I got only
> > small
> > > > points instead of the symbol in my Symbolset.
> > > > >
> > > > > My Symbolset looks like that:
> > > > > SYMBOLSET
> > > > > SYMBOL
> > > > > NAME "Fahne"
> > > > > TYPE VECTOR
> > > > > FILLED TRUE
> > > > > POINTS
> > > > > 1 5
> > > > > 1 3
> > > > > 3 2
> > > > > 1 1
> > > > > 1 3
> > > > > END
> > > > > END
> > > > > END
> > > > >
> > > > > Some Code from the application:
> > > > > mapObj myMap = new mapObj("");
> > > > > myMapHandler.Map.setSymbolSet(Environment.CurrentDirectory +
> > > > @"\test.sym");
> > > > > :
> > > > > layerObj myLayer = new layerObj(null);
> > > > > myLayer.name = "RosoftWFS";
> > > > > myLayer.Type = MS_LAYER_TYPE.MS_LAYER_POINT;
> > > > > myLayer.Connectiontype = MS_CONNECTION_TYPE.MS_WFS;
> > > > > myLayer.Connection = "http://localhost/cgi-bin/mapserv.exe?";
> > > > > myLayer.metadata.set("wfs_typename", "myWFS");
> > > > > myLayer.metadata.set("wfs_version","1.0.0");
> > > > > myLayer.metadata.set("wfs_request_method", "GET");
> > > > > myLayer.metadata.set("wfs_service", "WFS");
> > > > >
> > > > > myLayer.setProjection("EPSG:31467");
> > > > > classObj c = new classObj(myLayer);
> > > > > c.name = "test";
> > > > > styleObj style = new styleObj(c);
> > > > > style.symbolname = "Fahne";
> > > > > style.size = 150;
> > > > > style.color = new colorObj(255, 0, 255, 0);
> > > > > :
> > > > > myMap.insertLayer(myLayer, -1);
> > > > >
> > > > >
> > > > > Does anybody have an idea where to find the mistake?
> > > > >
> > > > >
> > > > > Best Regards
> > > > > Christian
> > > > > --
> > > > >
> > > > >
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>
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