Re: [Qgis-developer] Render with labels
Thanks a lot Stefan! QgsMapRendererCustomPainterJob works like a charm. Best wishes, Anita -- anitagraser.com ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [Qgis-developer] Render with labels
Yes, they were introduced in 2.4. Regards Stefan Von: Geo DrinX [mailto:geodr...@gmail.com] Gesendet: Montag, 6. Oktober 2014 12:12 An: Ziegler Stefan Cc: Anita Graser; qgis-developer@lists.osgeo.org Betreff: Re: [Qgis-developer] Render with labels Hi Stefan, I did have some problems with dpi output and qgsmaprenderer. Martin Dobias helped me at the hackfest. Now I’m using qgsmaprendererjob classes and it works with custom dpi and labels Great !Thank you also to Martin :) I am studing your source code... BTW, are "qgsmaprendererjob" classes introduced from 2.4 version ? In that case, I need to use a conditional like this : if QGis.QGIS_VERSION_INT > 20200: ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [Qgis-developer] Render with labels
Hi Stefan, > > I did have some problems with dpi output and qgsmaprenderer. Martin Dobias > helped me at the hackfest. Now I’m using qgsmaprendererjob classes and it > works with custom dpi and labels > Great !Thank you also to Martin :) I am studing your source code... BTW, are "qgsmaprendererjob" classes introduced from 2.4 version ? In that case, I need to use a conditional like this : if QGis.QGIS_VERSION_INT > 20200: ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [Qgis-developer] Render with labels
Hi
I did have some problems with dpi output and qgsmaprenderer. Martin Dobias
helped me at the hackfest. Now I’m using qgsmaprendererjob classes and it works
with custom dpi and labels:
mapSettings = QgsMapSettings()
mapSettings.setMapUnits(0)
mapSettings.setExtent(rect)
mapSettings.setOutputDpi(DPI)
mapSettings.setOutputSize(QSize(width, height))
mapSettings.setLayers(lst)
mapSettings.setFlags(QgsMapSettings.Antialiasing |
QgsMapSettings.UseAdvancedEffects | QgsMapSettings.ForceVectorOutput |
QgsMapSettings.DrawLabeling)
img = QImage(QSize(width, height), QImage.Format_RGB32)
#img = QImage(QSize(width, height), QImage.Format_Mono)
img.setDotsPerMeterX(DPI / 25.4 * 1000)
img.setDotsPerMeterY(DPI / 25.4 * 1000)
p = QPainter()
p.begin(img)
mapRenderer = QgsMapRendererCustomPainterJob(mapSettings, p)
mapRenderer.start()
mapRenderer.waitForFinished()
p.end()
img.save("/tmp/"+filename+".png","png")
regards
Stefan
Von: qgis-developer-boun...@lists.osgeo.org
[mailto:qgis-developer-boun...@lists.osgeo.org] Im Auftrag von Geo DrinX
Gesendet: Montag, 6. Oktober 2014 11:25
An: Anita Graser
Cc: qgis-developer@lists.osgeo.org
Betreff: Re: [Qgis-developer] Render with labels
Hello,
Sorry if I repeat my question that I sent some time ago, but it seems very
relevant to the topic.
I noticed that using the.render()function with pyQgis > 2.2 the
labels are not visible.
This is my test source code (taken from my GEarthView plugin):
iface = qgis.utils.iface
mapRenderer = mapCanvas.mapRenderer()
mapRect = mapRenderer.extent()
width = mapRenderer.width()
height = mapRenderer.height()
srs = mapRenderer.destinationCrs()
# create output image and initialize it
image = QImage(QSize(width, height), QImage.Format_ARGB32)
image.fill(0)
#adjust map canvas (renderer) to the image size and render
imagePainter = QPainter(image)
zoom = 1
target_dpi = int(round(zoom * mapRenderer.outputDpi()))
mapRenderer.setOutputSize(QSize(width, height), target_dpi)
mapRenderer.render(imagePainter)
imagePainter.end()
xN = mapRect.xMinimum()
yN = mapRect.yMinimum()
nomePNG = ("TestImage")
input_file = out_folder + "/" + nomePNG + ".png"
image.save(input_file, "png")
So, my question is : how need to change my code to have labels again visible ?
:)
Thank you for any link and answer
Roberto
2014-10-05 22:18 GMT+02:00 Anita Graser
mailto:anitagra...@gmx.at>>:
Am 05.10.2014, 18:54 Uhr, schrieb Larry Shaffer
mailto:lar...@dakotacarto.com>>:
Here's a small script you can use to test the Python bindings for labeling
Thanks a lot Larry! I'll give it a try!
Feel free to add this to the Cookbook. However, the API for labeling may
change during the 2.7 dev cycle, if rule- and style-based labeling is
introduced.
You mean it will change without breaking it? ;-)
Best wishes,
Anita
--
anitagraser.com<http://anitagraser.com>
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Re: [Qgis-developer] Render with labels
Hello,
Sorry if I repeat my question that I sent some time ago, but it seems
very relevant
to the topic.
I noticed that using the.render()function with pyQgis > 2.2
the labels are not visible.
This is my test source code (taken from my GEarthView plugin):
iface = qgis.utils.iface
mapRenderer = mapCanvas.mapRenderer()
mapRect = mapRenderer.extent()
width = mapRenderer.width()
height = mapRenderer.height()
srs = mapRenderer.destinationCrs()
# create output image and initialize it
image = QImage(QSize(width, height), QImage.Format_ARGB32)
image.fill(0)
#adjust map canvas (renderer) to the image size and render
imagePainter = QPainter(image)
zoom = 1
target_dpi = int(round(zoom * mapRenderer.outputDpi()))
mapRenderer.setOutputSize(QSize(width, height), target_dpi)
mapRenderer.render(imagePainter)
imagePainter.end()
xN = mapRect.xMinimum()
yN = mapRect.yMinimum()
nomePNG = ("TestImage")
input_file = out_folder + "/" + nomePNG + ".png"
image.save(input_file, "png")
So, my question is : how need to change my code to have labels again
visible ?
:)
Thank you for any link and answer
Roberto
2014-10-05 22:18 GMT+02:00 Anita Graser :
> Am 05.10.2014, 18:54 Uhr, schrieb Larry Shaffer :
>
>> Here's a small script you can use to test the Python bindings for labeling
>>
>
> Thanks a lot Larry! I'll give it a try!
>
> Feel free to add this to the Cookbook. However, the API for labeling may
>> change during the 2.7 dev cycle, if rule- and style-based labeling is
>> introduced.
>>
>
> You mean it will change without breaking it? ;-)
>
>
> Best wishes,
> Anita
>
>
> --
> anitagraser.com
> ___
> Qgis-developer mailing list
> Qgis-developer@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-developer
>
___
Qgis-developer mailing list
Qgis-developer@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [Qgis-developer] Render with labels
Am 05.10.2014, 18:54 Uhr, schrieb Larry Shaffer : Here's a small script you can use to test the Python bindings for labeling Thanks a lot Larry! I'll give it a try! Feel free to add this to the Cookbook. However, the API for labeling may change during the 2.7 dev cycle, if rule- and style-based labeling is introduced. You mean it will change without breaking it? ;-) Best wishes, Anita -- anitagraser.com ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [Qgis-developer] Render with labels
Hi Anita, On Sun, Oct 5, 2014 at 9:45 AM, Anita Graser wrote: > Hi, > > I'm trying to use one of the examples from the PyQGIS Cookbook to render a > map at custom resolution: > > http://docs.qgis.org/testing/en/docs/pyqgis_developer_ > cookbook/composer.html#simple-rendering > > While the layers render fine, no labels are drawn. Do you know how I can > add labels to the output? > > I tried > > render.setLabelingEngine(QgsPalLabeling()) > > but no luck. > Here's a small script you can use to test the Python bindings for labeling [0]. It is intended to be run from within the PyQGIS console's script editor, and uses the Spatialite db for labeling unit tests, called ' pal_features_v3.sqlite' [1]. Setup: * Load the 'background' layer * Load the 'point' layer on top of 'background' * Select the 'point' layer in the legend * Open script in console's editor and run it When script is run, you should end up with something like this [2], probably with different fill color for 'background'. See the Python labeling test suite for more examples, from 'test_qgspallabeling_*.py' [3], specifically the 'test_qgspallabeling_tests.py' file. Feel free to add this to the Cookbook. However, the API for labeling may change during the 2.7 dev cycle, if rule- and style-based labeling is introduced. [0] https://gist.github.com/dakcarto/33115cd569e17b9419c0 [1] https://github.com/qgis/QGIS/tree/master/tests/testdata/labeling [2] http://drive.dakotacarto.com/qgis/labeling_py-api.png [3] https://github.com/qgis/QGIS/tree/master/tests/src/python Regards, Larry Shaffer Dakota Cartography Black Hills, South Dakota > > Thanks and best wishes, > Anita > > > -- > anitagraser.com > ___ > Qgis-developer mailing list > Qgis-developer@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-developer > ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
[Qgis-developer] Render with labels
Hi, I'm trying to use one of the examples from the PyQGIS Cookbook to render a map at custom resolution: http://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/composer.html#simple-rendering While the layers render fine, no labels are drawn. Do you know how I can add labels to the output? I tried render.setLabelingEngine(QgsPalLabeling()) but no luck. Thanks and best wishes, Anita -- anitagraser.com ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
