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"""
***************************************************************************
gdal2xyz.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"
from qgis.core import (
QgsProcessingAlgorithm,
QgsProcessingException,
QgsProcessingParameterRasterLayer,
QgsProcessingParameterBand,
QgsProcessingParameterBoolean,
QgsProcessingParameterFileDestination,
QgsProcessingParameterNumber,
)
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.algs.gdal.GdalUtils import GdalUtils
from processing.tools.system import isWindows
class gdal2xyz(GdalAlgorithm):
INPUT = "INPUT"
BAND = "BAND"
SRCNODATA = "NODATA_INPUT"
DSTNODATA = "NODATA_OUTPUT"
SKIPNODATA = "SKIP_NODATA"
CSV = "CSV"
OUTPUT = "OUTPUT"
def __init__(self):
super().__init__()
def initAlgorithm(self, config=None):
self.addParameter(
QgsProcessingParameterRasterLayer(self.INPUT, self.tr("Input layer"))
)
self.addParameter(
QgsProcessingParameterBand(
self.BAND,
self.tr("Band number"),
1,
parentLayerParameterName=self.INPUT,
)
)
self.addParameter(
QgsProcessingParameterNumber(
self.SRCNODATA,
self.tr("Input pixel value to treat as NoData"),
optional=True,
)
) # GDAL > 3.6.3
self.addParameter(
QgsProcessingParameterNumber(
self.DSTNODATA,
self.tr("Assign specified NoData value to output"),
optional=True,
)
) # GDAL > 3.6.3
self.addParameter(
QgsProcessingParameterBoolean(
self.SKIPNODATA,
self.tr("Do not output NoData values"),
defaultValue=False,
)
) # GDAL > 3.3
self.addParameter(
QgsProcessingParameterBoolean(
self.CSV, self.tr("Output comma-separated values"), defaultValue=False
)
)
self.addParameter(
QgsProcessingParameterFileDestination(
self.OUTPUT, self.tr("XYZ ASCII file"), self.tr("CSV files (*.csv)")
)
)
def name(self):
return "gdal2xyz"
def displayName(self):
return self.tr("gdal2xyz")
def group(self):
return self.tr("Raster conversion")
def groupId(self):
return "rasterconversion"
def commandName(self):
return "gdal2xyz"
def flags(self):
return super().flags() | QgsProcessingAlgorithm.Flag.FlagDisplayNameIsLiteral
def getConsoleCommands(self, parameters, context, feedback, executing=True):
arguments = ["-band", str(self.parameterAsInt(parameters, self.BAND, context))]
if self.SRCNODATA in parameters and parameters[self.SRCNODATA] is not None:
if (
GdalUtils.version() > 3060300
): # src/dstnodata broken <= 3.6.3 https://github.com/OSGeo/gdal/issues/7410
srcnodata = self.parameterAsDouble(parameters, self.SRCNODATA, context)
arguments.append("-srcnodata")
arguments.append(srcnodata)
else:
raise QgsProcessingException(
self.tr(
"The source nodata option (-srcnodata) is only available on GDAL 3.6.4 or later"
)
)
if self.DSTNODATA in parameters and parameters[self.DSTNODATA] is not None:
if (
GdalUtils.version() > 3060300
): # src/dstnodata broken <= 3.6.3 https://github.com/OSGeo/gdal/issues/7410
dstnodata = self.parameterAsDouble(parameters, self.DSTNODATA, context)
arguments.append("-dstnodata")
arguments.append(dstnodata)
else:
raise QgsProcessingException(
self.tr(
"The destination nodata option (-dstnodata) is only available on GDAL 3.6.4 or later"
)
)
if self.SKIPNODATA in parameters:
if GdalUtils.version() >= 3030000: # skipnodata added at GDAL 3.3
if self.parameterAsBoolean(parameters, self.SKIPNODATA, context):
arguments.append("-skipnodata")
else:
raise QgsProcessingException(
self.tr(
"The skip nodata option (-skipnodata) is only available on GDAL 3.3 or later"
)
)
if self.parameterAsBoolean(parameters, self.CSV, context):
arguments.append("-csv")
raster = self.parameterAsRasterLayer(parameters, self.INPUT, context)
if raster is None:
raise QgsProcessingException(
self.invalidRasterError(parameters, self.INPUT)
)
input_details = GdalUtils.gdal_connection_details_from_layer(raster)
arguments.append(input_details.connection_string)
arguments.append(self.parameterAsFileOutput(parameters, self.OUTPUT, context))
if input_details.credential_options:
arguments.extend(input_details.credential_options_as_arguments())
return [
self.commandName() + (".bat" if isWindows() else ".py"),
GdalUtils.escapeAndJoin(arguments),
]
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