[Qgis-developer] Changing the Renderer Type in PyQGis Application
matthias.kuhn at gmx.ch
Thu Nov 1 04:12:26 PDT 2012
On Thu, 2012-11-01 at 12:19 +0200, Justin Hubbard wrote:
> In line with this, Is there any way to open a QGIS dialog (To edit
> layer properties for example) from a PyQGis application?
> Has anyone been able to do this?
iface.showLayerProperties( mapLayer )
> On Thu, Nov 1, 2012 at 9:32 AM, Matthias Kuhn <matthias.kuhn at gmx.ch>
> Hi Justin,
> What you want to do is probably create a new renderer of
> different type
> and replace the current renderer with the new one. You have to
> create it
> In the API  click on "Inheritance diagram" (just on the top
> of the
> page) to see, what subclasses are available.
> The you set the new renderer on the vector layer, I think that
> should do
> the trick.
> : http://www.qgis.org/api/classQgsFeatureRendererV2.html
> On Thu, 2012-11-01 at 08:58 +0200, Justin Hubbard wrote:
> > Hi
> > I would like to know how to change the renderer type in a
> > application.
> > The vector layer (Spatialite) is a singleSymbol type
> currently. (Point
> > geometries) and I need to change the symbols depending on
> the value of
> > an attribute in the layer.
> > I am new to Python and QGis so have no idea how to do this.
> (I notice
> > that there is no setType method on the QgsFeatureRendererV2,
> which i
> > would have assumed would do the trick)
> > Any help appreciated
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