6. UMEP for Processing

UMEP for Processing ports the UMEP tools to the QGIS processing framework, which is a geoprocessing environment that can be used to call native and third-party algorithms from QGIS, making your spatial analysis tasks more productive and easy to accomplish. You can for example call the UMEP tools directly as functions in a Python script or include them in the Graphical Modeler in QIS.

UMEP for processing is available from Plugins -> Manage and Install Plugins… in the menu bar in QGIS. More tools, info and tutorials is under contruction. The code is available via our Github page.

6.1. Accessing algorithms in a stand-alone Python script

By make use of processing for UMEP there are possibilities to export UMEP-tools to a standalone Python script. One easy way to do this is to run a certaion tool from the Processing Toolbox and copy the syntax from the log-tab or from the History log in the QGIS Processing toolbox.

Below you see a commmand example running the Wall Height and Aspect-tool copied from the History log after running the tool through the toolbox:

processing.run("umep:Urban Geometry: Wall Height and Aspect",
   {'INPUT':'C:/temp/DSM.tif',
   'ASPECT_BOOL':True,
   'INPUT_LIMIT':3,
   'OUTPUT_HEIGHT':'C:/temp/height.tif',
   'OUTPUT_ASPECT':'C:/temp/aspect.tif'})

To access third party processing plugins (such as UMEP) in a stand-alone Python script, use the following lines of code (example for Windows users):

from qgis.core import QgsApplication
import sys

# Initiating a QGIS application
qgishome = 'C:/OSGeo4W/apps/qgis/'
QgsApplication.setPrefixPath(qgishome, True)
app = QgsApplication([], False)
app.initQgis()

# import third party processing plugins
sys.path.append(r'C:\Users\ **your_username** \AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins')
from processing_umep.processing_umep_provider import ProcessingUMEPProvider
umep_provider = ProcessingUMEPProvider()
QgsApplication.processingRegistry().addProvider(umep_provider)

from processing.core.Processing import Processing
Processing.initialize()

6.2. Road map for UMEP for Processing

Below you can see which tools that have been migrated to UMEP fro processing and what tools that will not be migrated. Please report any issues to our repository.

MetdataProcessor	Will not be migrated
ShadowGenerator	READY
SkyViewFactorCalculator	READY
ImageMorphParam	READY
ImageMorphParmsPoint	READY
LandCoverFractionGrid	READY
LandCoverFractionPoint	READY
LandCoverReclassifier	Will not be migrated (Use any other built-in reclassifier in QGIS)
WallHeight	READY
TreeGenerator	READY
FootprintModel	NOT READY
LCZ_converter	NOT READY
WallHeight	READY
UMEP_Data_Download	NOT READY
DSMGenerator	READY
GreaterQF	NOT READY
ERA5 DownloadData	READY
TreePlanter	READY (only available via UMEP for processing)
ExtremeFinder	NOT READY
LQF	NOT READY
SEBE	READY
SuewsSimple	Will not be migrated
SUEWSPrepare	NOT READY
SUEWSConverter	Will not be migrated
SUEWS	READY
SOLWEIG	READY
BenchMarking	Will not be migrated
SEBEVisual	Will not be migrated
SolweigAnalyzer	READY (only spatial section migrated)
SUEWSAnalyzer	READY (only spatial section migrated)
UWGReclassifier	Will not be migrated
UWGPrepare	READY
Urban Weather Generator	READY (only available via UMEP for processing)
UWGAnalyzer	READY (only available via UMEP for processing)
SpatialTC	READY (only available via UMEP for processing)
URock	READY (only available via UMEP for processing)