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Port gdal translate alg to new api
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nyalldawson committed Aug 30, 2017
1 parent a29e378 commit d463178
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Showing 3 changed files with 62 additions and 59 deletions.
5 changes: 2 additions & 3 deletions python/plugins/processing/algs/gdal/GdalAlgorithmProvider.py
Expand Up @@ -39,11 +39,11 @@
from .ColorRelief import ColorRelief
from .information import information
from .rgb2pct import rgb2pct
from .translate import translate
from .tri import tri
from .warp import warp
from .nearblack import nearblack

# from .translate import translate
# from .pct2rgb import pct2rgb
# from .merge import merge
# from .polygonize import polygonize
Expand Down Expand Up @@ -148,10 +148,9 @@ def loadAlgorithms(self):
information(),
nearblack(),
rgb2pct(),
translate(),
tri(),
warp(),
# translate(),
#
# pct2rgb(),
# merge(),
# polygonize(),
Expand Down
2 changes: 2 additions & 0 deletions python/plugins/processing/algs/gdal/GdalUtils.py
Expand Up @@ -193,6 +193,8 @@ def getFormatShortNameFromFilename(filename):
def escapeAndJoin(strList):
joined = ''
for s in strList:
if not isinstance(s, str):
s = str(s)
if s and s[0] != '-' and ' ' in s:
escaped = '"' + s.replace('\\', '\\\\').replace('"', '\\"') \
+ '"'
Expand Down
114 changes: 58 additions & 56 deletions python/plugins/processing/algs/gdal/translate.py
Expand Up @@ -30,15 +30,16 @@

from qgis.PyQt.QtGui import QIcon

from qgis.core import (QgsProcessingParameterRasterLayer,
QgsProcessingParameterNumber,
QgsProcessingParameterBoolean,
QgsProcessingParameterString,
QgsProcessingParameterEnum,
QgsProcessingParameterCrs,
QgsProcessingParameterExtent,
QgsProcessingParameterRasterDestination,
QgsProcessingUtils)
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.core.parameters import (ParameterRaster,
ParameterString,
ParameterNumber,
ParameterBoolean,
ParameterSelection,
ParameterExtent,
ParameterCrs)
from processing.core.outputs import OutputRaster

from processing.algs.gdal.GdalUtils import GdalUtils

Expand Down Expand Up @@ -67,34 +68,35 @@ def __init__(self):
super().__init__()

def initAlgorithm(self, config=None):
self.addParameter(ParameterRaster(self.INPUT, self.tr('Input layer')))
self.addParameter(ParameterNumber(self.OUTSIZE,
self.tr('Set the size of the output file (In pixels or %)'),
1, None, 100))
self.addParameter(ParameterBoolean(self.OUTSIZE_PERC,
self.tr('Output size is a percentage of input size'), True))
self.addParameter(ParameterString(self.NO_DATA,
self.tr("Nodata value, leave blank to take the nodata value from input"),
'', optional=True))
self.addParameter(ParameterSelection(self.EXPAND,
self.tr('Expand'), ['none', 'gray', 'rgb', 'rgba'], default=0))
self.addParameter(ParameterCrs(self.SRS,
self.tr('Output projection for output file [leave blank to use input projection]'), None, optional=True))
self.addParameter(ParameterExtent(self.PROJWIN,
self.tr('Subset based on georeferenced coordinates'), optional=True))
self.addParameter(ParameterBoolean(self.SDS,
self.tr('Copy all subdatasets of this file to individual output files'),
False))

self.addParameter(ParameterString(self.OPTIONS,
self.tr('Additional creation options'),
optional=True,
metadata={'widget_wrapper': 'processing.algs.gdal.ui.RasterOptionsWidget.RasterOptionsWidgetWrapper'}))
self.addParameter(ParameterSelection(self.RTYPE,
self.tr('Output raster type'),
self.TYPE, 5))

self.addOutput(OutputRaster(self.OUTPUT, self.tr('Converted')))
self.addParameter(QgsProcessingParameterRasterLayer(self.INPUT, self.tr('Input layer')))
self.addParameter(QgsProcessingParameterNumber(self.OUTSIZE,
self.tr('Set the size of the output file (In pixels or %)'),
minValue=1, defaultValue=100))
self.addParameter(QgsProcessingParameterBoolean(self.OUTSIZE_PERC,
self.tr('Output size is a percentage of input size'), defaultValue=True))
self.addParameter(QgsProcessingParameterString(self.NO_DATA,
self.tr("Nodata value, leave blank to take the nodata value from input"),
defaultValue='', optional=True))
self.addParameter(QgsProcessingParameterEnum(self.EXPAND,
self.tr('Expand'), options=['none', 'gray', 'rgb', 'rgba'], defaultValue=0))
self.addParameter(QgsProcessingParameterCrs(self.SRS,
self.tr('Output projection for output file [leave blank to use input projection]'), defaultValue=None, optional=True))
self.addParameter(QgsProcessingParameterExtent(self.PROJWIN,
self.tr('Subset based on georeferenced coordinates'), optional=True))
self.addParameter(QgsProcessingParameterBoolean(self.SDS,
self.tr('Copy all subdatasets of this file to individual output files'),
defaultValue=False))

create_options_param = QgsProcessingParameterString(self.OPTIONS,
self.tr('Additional creation options'),
optional=True)
create_options_param.setMetadata({'widget_wrapper': 'processing.algs.gdal.ui.RasterOptionsWidget.RasterOptionsWidgetWrapper'})
self.addParameter(create_options_param)
self.addParameter(QgsProcessingParameterEnum(self.RTYPE,
self.tr('Output raster type'),
options=self.TYPE, defaultValue=5))

self.addParameter(QgsProcessingParameterRasterDestination(self.OUTPUT, self.tr('Converted')))

def name(self):
return 'translate'
Expand All @@ -106,18 +108,19 @@ def group(self):
return self.tr('Raster conversion')

def getConsoleCommands(self, parameters, context, feedback):
inLayer = self.getParameterValue(self.INPUT)
out = self.getOutputValue(translate.OUTPUT)
outsize = str(self.getParameterValue(self.OUTSIZE))
outsizePerc = str(self.getParameterValue(self.OUTSIZE_PERC))
noData = self.getParameterValue(self.NO_DATA)
expand = parameters[self.EXPAND].options[self.getParameterValue(self.EXPAND)][1]
projwin = str(self.getParameterValue(self.PROJWIN))
if not projwin:
projwin = QgsProcessingUtils.combineLayerExtents([inLayer])
crsId = self.getParameterValue(self.SRS)
sds = self.getParameterValue(self.SDS)
opts = self.getParameterValue(self.OPTIONS)
inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
out = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
outsize = str(self.parameterAsInt(parameters, self.OUTSIZE, context))
outsizePerc = self.parameterAsBool(parameters, self.OUTSIZE_PERC, context)
noData = self.parameterAsString(parameters, self.NO_DATA, context)
expand = self.parameterDefinition(self.EXPAND).options()[self.parameterAsEnum(parameters, self.EXPAND, context)]

proj_extent = self.parameterAsExtent(parameters, self.PROJWIN, context)
if proj_extent.isNull():
proj_extent = QgsProcessingUtils.combineLayerExtents([inLayer])
crsId = self.parameterAsCrs(parameters, self.SRS, context).authid()
sds = self.parameterAsBool(parameters, self.SDS, context)
opts = self.parameterAsString(parameters, self.OPTIONS, context)

if noData is not None:
noData = str(noData)
Expand All @@ -126,8 +129,8 @@ def getConsoleCommands(self, parameters, context, feedback):
arguments.append('-of')
arguments.append(GdalUtils.getFormatShortNameFromFilename(out))
arguments.append('-ot')
arguments.append(self.TYPE[self.getParameterValue(self.RTYPE)])
if outsizePerc == 'True':
arguments.append(self.TYPE[self.parameterAsEnum(parameters, self.RTYPE, context)])
if outsizePerc:
arguments.append('-outsize')
arguments.append(outsize + '%')
arguments.append(outsize + '%')
Expand All @@ -141,14 +144,13 @@ def getConsoleCommands(self, parameters, context, feedback):
if expand != 'none':
arguments.append('-expand')
arguments.append(expand)
regionCoords = projwin.split(',')
try:
projwin = []
projwin.append('-projwin')
projwin.append(regionCoords[0])
projwin.append(regionCoords[3])
projwin.append(regionCoords[1])
projwin.append(regionCoords[2])
projwin.append(proj_extent.xMinimum())
projwin.append(proj_extent.yMaximum())
projwin.append(proj_extent.xMaximum())
projwin.append(proj_extent.yMinimum())
except IndexError:
projwin = []
if projwin:
Expand All @@ -163,7 +165,7 @@ def getConsoleCommands(self, parameters, context, feedback):
arguments.append('-co')
arguments.append(opts)

arguments.append(self.getParameterValue(self.INPUT))
arguments.append(inLayer.source())
arguments.append(out)

return ['gdal_translate', GdalUtils.escapeAndJoin(arguments)]

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