[Qgis-user] Labels not visible when setting them programmatically.

[Werner Macho]

hmm -
well - as the qchainage plugin clearly sets labeling (when enabled)
you could take it and search for the missing piece..
regards
Werner

On Wed, Apr 1, 2015 at 2:19 PM, Casper Børgesen (CABO) <CABO at niras.dk> wrote:
> No the triggerRepaint() didn't work, just to clarify that I tried that :)
>
> Regards, Casper
>
> -----Original Message-----
> From: Werner Macho [mailto:werner.macho at gmail.com]
> Sent: 1. april 2015 13:52
> To: Casper Børgesen (CABO)
> Cc: qgis-user at lists.osgeo.org
> Subject: Re: [Qgis-user] Labels not visible when setting them programmatically.
>
> Hi!
>
> I thought maybe it is the
> triggerRepaint()
>
> but it was just a guess.
>
> regards
> Werner
>
> On Wed, Apr 1, 2015 at 1:48 PM, Casper Børgesen (CABO) <CABO at niras.dk> wrote:
>> Hi Werner
>>
>> Sadly no, it does not.
>>
>>
>> Regards, Casper
>>
>> -----Original Message-----
>> From: Werner Macho [mailto:werner.macho at gmail.com]
>> Sent: 1. april 2015 13:43
>> To: Casper Børgesen (CABO)
>> Cc: qgis-user at lists.osgeo.org
>> Subject: Re: [Qgis-user] Labels not visible when setting them programmatically.
>>
>> Hi,
>> does
>> https://github.com/mach0/qchainage/blob/master/chainagetool.py
>>
>> line 150 ff help you?
>>
>> regards
>> Werner
>>
>> On Wed, Apr 1, 2015 at 1:25 PM, Casper Børgesen (CABO) <CABO at niras.dk> wrote:
>>> I’m trying to programmatically set and enable labelling on a layer
>>> using Python in QGis 2.9.0.
>>>
>>>
>>>
>>>         label = QgsPalLayerSettings()
>>>
>>>         label.readFromLayer(myLayer)
>>>
>>>
>>>
>>>         label.enabled = True
>>>
>>>         label.fieldName = 'myField'
>>>
>>>
>>>
>>>         # Just to change something clearly visible.
>>>
>>>         label.textColor = QColor(255,0,0,255)
>>>
>>>
>>>
>>>         label.writeToLayer(myLayer)
>>>
>>>
>>>
>>> This doesn’t enable labelling, but if I enter the Layer Properties on
>>> myLayer, everything looks okay and when pressing Apply, the labels
>>> become visible.
>>>
>>>
>>>
>>> Is there something I need to set to avoid having to manually click
>>> Apply to get the labels visible?
>>>
>>>
>>>
>>> Calling iface.mapCanvas().refresh() afterwards doesn’t work.
>>>
>>>
>>>
>>>
>>>
>>> Regards, Casper
>>>
>>>
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