Hi Otto,
Try this
class MyPluginDialog (QDialog,Ui_MyPluginDialog)::
def __init__(self):
self.setupUi(self)
self.initLayerCombobox( self.ui.InRastA, 'key_of_default_layer' )
def initLayerCombobox(self,combobox, default):
combobox.clear()
reg = QgsMapLayerRegistry.instance()
for ( key, layer ) in reg.mapLayers().iteritems():
if layer.type() == QgsMapLayer.RasterLayer and (
layer.usesProvider() and layer.providerKey() == 'gdal' ):
combobox.addItem( layer.name(), key )
idx = combobox.findData( default )
if idx != -1:
combobox.setCurrentIndex( idx )
Matthias
On 01/17/2013 05:07 PM, Otto Dassau wrote:
Hi Matthias,
thanks for your help. I guess it is similar to what I found?
def getRasterLayersNames():
layerList = []
layerMap = QgsMapLayerRegistry.instance().mapLayers()
for name, layer in layerMap.iteritems():
if layer.type() == QgsMapLayer.RasterLayer and
( layer.usesProvider() and layer.providerKey() ==
'gdal' ): layerList.append( unicode( layer.name()))
return layerList
If I understand correctly your function selects all raster layers from
QgsMapLayerRegistry. Now I would like to visualize the layer list in the
combobox (InRastA) of the plugin dialog file. I found something that works
for vector layers:
def manageGui(self):
myList = []
self.ui.InRastA.clear()
myList = initLayerCombobox()
self.ui.InRastA.addItems( myList )
return
But is doesn't work for raster that way, if I use your function. How is it
possible to make the raster layers selectable / show up in the plugin dialog?
Regards
Otto
Am Thu, 17 Jan 2013 16:21:51 +0100
schrieb Matthias Kuhn <[email protected]>:
Hi Otto,
here a small extract from a plugin I wrote:
Just check for the layer type to only list raster layers
def initLayerCombobox(self,combobox, default):
reg = QgsMapLayerRegistry.instance()
for ( key, layer ) in reg.mapLayers().iteritems():
combobox.addItem( layer.name(), key )
idx = combobox.findData( default )
if idx != -1:
combobox.setCurrentIndex( idx )
Regards
On Thu, 2013-01-17 at 15:54 +0100, Otto Dassau wrote:
Hi,
I would like to write a small python plugin to analyse some raster data,
but I haven't managed to select a loaded layer yet. I searched the
howtos and found several simple examples about:
# get the currently active layer
layer = self.iface.mapCanvas().currentLayer()
but as I said I would like to select one of the loaded raster layers
from the qgis legend using a QtGui.QComboBox in the plugin dialog. At
the moment I tried the getRasterLayersNames() function I found in
several other plugins but it seems I am missing something, because the
raster layers are not selectable. Can someone point me to a simple
example to understand the general procedure?
Thanks a lot
Otto
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