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"""
***************************************************************************
rasterize_over.py
---------------------
Date : September 2013
Copyright : (C) 2013 by Alexander Bruy
Email : alexander dot bruy at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = "Alexander Bruy"
__date__ = "September 2013"
__copyright__ = "(C) 2013, Alexander Bruy"
import os
from qgis.PyQt.QtGui import QIcon
from qgis.core import (
QgsProcessingException,
QgsProcessingParameterDefinition,
QgsProcessingParameterFeatureSource,
QgsProcessingParameterField,
QgsProcessingParameterRasterLayer,
QgsProcessingParameterString,
QgsProcessingParameterBoolean,
QgsProcessingOutputRasterLayer,
)
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.algs.gdal.GdalUtils import GdalUtils
pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
class rasterize_over(GdalAlgorithm):
INPUT = "INPUT"
FIELD = "FIELD"
INPUT_RASTER = "INPUT_RASTER"
ADD = "ADD"
EXTRA = "EXTRA"
OUTPUT = "OUTPUT"
def __init__(self):
super().__init__()
def initAlgorithm(self, config=None):
self.addParameter(
QgsProcessingParameterFeatureSource(
self.INPUT, self.tr("Input vector layer")
)
)
self.addParameter(
QgsProcessingParameterRasterLayer(
self.INPUT_RASTER, self.tr("Input raster layer")
)
)
self.addParameter(
QgsProcessingParameterField(
self.FIELD,
self.tr("Field to use for burn in value"),
None,
self.INPUT,
QgsProcessingParameterField.DataType.Numeric,
optional=False,
)
)
params = [
QgsProcessingParameterBoolean(
self.ADD,
self.tr("Add burn in values to existing raster values"),
defaultValue=False,
),
QgsProcessingParameterString(
self.EXTRA,
self.tr("Additional command-line parameters"),
defaultValue=None,
optional=True,
),
]
for p in params:
p.setFlags(p.flags() | QgsProcessingParameterDefinition.Flag.FlagAdvanced)
self.addParameter(p)
self.addOutput(
QgsProcessingOutputRasterLayer(self.OUTPUT, self.tr("Rasterized"))
)
def name(self):
return "rasterize_over"
def displayName(self):
return self.tr("Rasterize (overwrite with attribute)")
def group(self):
return self.tr("Vector conversion")
def groupId(self):
return "vectorconversion"
def icon(self):
return QIcon(os.path.join(pluginPath, "images", "gdaltools", "rasterize.png"))
def commandName(self):
return "gdal_rasterize"
def getConsoleCommands(self, parameters, context, feedback, executing=True):
input_details = self.getOgrCompatibleSource(
self.INPUT, parameters, context, feedback, executing
)
inLayer = self.parameterAsRasterLayer(parameters, self.INPUT_RASTER, context)
if inLayer is None:
raise QgsProcessingException(
self.invalidRasterError(parameters, self.INPUT_RASTER)
)
input_raster_details = GdalUtils.gdal_connection_details_from_layer(inLayer)
fieldName = self.parameterAsString(parameters, self.FIELD, context)
self.setOutputValue(self.OUTPUT, inLayer.source())
arguments = ["-l", input_details.layer_name, "-a", fieldName]
if self.parameterAsBool(parameters, self.ADD, context):
arguments.append("-add")
if self.EXTRA in parameters and parameters[self.EXTRA] not in (None, ""):
extra = self.parameterAsString(parameters, self.EXTRA, context)
arguments.append(extra)
if input_details.open_options:
if GdalUtils.version() < 3070000:
raise QgsProcessingException(
self.tr(
"Open options are not supported by gdal_rasterize version {} (requires GDAL version 3.7 or later)".format(
GdalUtils.readableVersion()
)
)
)
arguments.extend(input_details.open_options_as_arguments())
if input_details.credential_options:
arguments.extend(input_details.credential_options_as_arguments())
arguments.append(input_details.connection_string)
arguments.append(input_raster_details.connection_string)
return [self.commandName(), GdalUtils.escapeAndJoin(arguments)]
def postProcessAlgorithm(self, context, feedback):
fileName = self.output_values.get(self.OUTPUT)
if not fileName:
return {}
if context.project():
for l in context.project().mapLayers().values():
if l.source() != fileName:
continue
l.dataProvider().reloadData()
l.triggerRepaint()
for l in context.temporaryLayerStore().mapLayers().values():
if l.source() != fileName:
continue
l.dataProvider().reloadData()
return {}
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