Re: [Qgis-developer] Adding a WMS layer via python

[Kelly Thomas]

 From: nyall.daw...@gmail.com
 Subject: [Qgis-developer] Adding a WMS layer via python
 I'm wondering if someone can help me out here - I'm trying to add a
 WMS layer via a python plugin, but I'm having trouble with two
 settings I need:
 
 1: setting a username and password to use for the layer
 2: setting a tilesize for the layer
 One thing I've noticed is that the uri.encodedUri output looks strange:
 
 crs=EPSG:3111format=image/jpegheight=512layers=AERIAL_MELBOURNE_2009JAN03_AIR_VIS_35CM_VG94styles=url=http://images.land.vic.gov.au/ecwp/ecw_wms.dll?width=512
 
 Any ideas what I'm doing wrong on this one?

Hi Nyall,
I haven't had need to tweak the tile size so I can't offer any advice 
there.However I have had success adding authenticated WMS layers to 1.8 with 
this code:
if len(self.user)  0 : connectionString = username= + self.user + 
,password= + self.password + ,url= + self.urlelse: connectionString = 
self.url
crs = self.iface.mapCanvas().mapRenderer().destinationCrs().authid()
layer = QgsRasterLayer(0, connectionString, self.title, wms,[self.layername], 
[default], image/png, crs)
if layer.isValid(): QgsMapLayerRegistry.instance().addMapLayer(layer)
This code manually adds the username, and password parameters to the connection 
string, you may want to try something similar with your URI.
Regards,Kelly Thomas  ___
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Re: [Qgis-developer] Adding a WMS layer via python

[Nyall Dawson]

 I haven't had need to tweak the tile size so I can't offer any advice there.
 However I have had success adding authenticated WMS layers to 1.8 with this
 code:

 if len(self.user)  0 :
 connectionString = username= + self.user + ,password= + self.password +
 ,url= + self.url
 else:
 connectionString = self.url


Thanks for this -- I've managed to solve this one now. Turns out the
username and password can be set through QgsDataSourceURI() by:

uri.setParam(username, xx)
uri.setParam(password, xx)

(rather then setUsername/setPassword).

The tilesize are set by the parameters maxWidth/maxHeight:

uri.setParam(maxWidth, 512)
uri.setParam(maxHeight, 512)

Cheers,
Nyall
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