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92 Enhancements to Create constant raster #102

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merged 5 commits into from
Apr 16, 2024
Merged

92 Enhancements to Create constant raster #102

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e9d341f
Modify Create constant raster to be compatible with the toolkit
lehtonenp Mar 14, 2024
04222fe
Change extent parameter to be QgsProcessingParameterExtent, change nu…
lehtonenp Mar 19, 2024
0bb0454
Separate template and manual raster creation functions
lehtonenp Mar 20, 2024
436a0c5
Remove unused imports
lehtonenp Mar 20, 2024
59dd39a
Modify create constant raster to reflect CLI
nmaarnio Apr 16, 2024
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143 changes: 111 additions & 32 deletions eis_qgis_plugin/processing/algorithms/raster_processing/create_constant_raster.py
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
from qgis.core import (
QgsProcessingParameterCrs,
QgsProcessingParameterExtent,
QgsProcessingParameterNumber,
QgsProcessingParameterRasterDestination,
QgsProcessingParameterRasterLayer,
)

from eis_qgis_plugin.processing.eis_processing_algorithm import EISProcessingAlgorithm
Expand All @@ -16,47 +16,126 @@ def __init__(self) -> None:
self._display_name = "Create constant raster"
self._group = "Raster Processing"
self._group_id = "raster_processing"
self._short_help_string = "Create a constant raster based on a user-defined value."
self._short_help_string = '''Create a constant raster based on a user-defined value.
Provide 3 methods for raster creation:
1. Set extent and coordinate system based on a template raster.
2. Set extent from origin, based on the western and northern coordinates and the pixel size.
3. Set extent from bounds, based on western, northern, eastern and southern points.

Always provide values for height and width for the last two options, which correspond to
the desired number of pixels for rows and columns.
'''

def initAlgorithm(self, config=None):
self.alg_parameters = [
"extent", "target_crs", "pixel_size", "constant_value", "out_raster"
]
"constant_value",
"template_raster",
"coord_west",
"coord_north",
"coord_east",
"coord_south",
"target_epsg",
"target_pixel_size",
"raster_width",
"raster_height",
"nodata_value",
"output_raster",
]

constant_value_param = QgsProcessingParameterNumber(
name=self.alg_parameters[0],
description="Constant value",
type=QgsProcessingParameterNumber.Double,
)
constant_value_param.setHelp("The constant value to use in the raster.")
self.addParameter(constant_value_param)

template_raster_param = QgsProcessingParameterRasterLayer(
name=self.alg_parameters[1],
description="Template raster",
optional=True,
)
template_raster_param.setHelp("An optional raster to use as a template for the output.")
self.addParameter(template_raster_param)

coord_west_param = QgsProcessingParameterNumber(
name=self.alg_parameters[2],
description="Western coordinate",
optional=True,
type=QgsProcessingParameterNumber.Double,
)
coord_west_param.setHelp("The western coordinate of the output raster in [m].")
self.addParameter(coord_west_param)

coord_north_param = QgsProcessingParameterNumber(
name=self.alg_parameters[3],
description="Northern coordinate",
optional=True,
type=QgsProcessingParameterNumber.Double,
)
coord_north_param.setHelp("The northern coordinate of the output raster in [m].")
self.addParameter(coord_north_param)

coord_east_param = QgsProcessingParameterNumber(
name=self.alg_parameters[4],
description="Eastern coordinate",
optional=True,
type=QgsProcessingParameterNumber.Double,
)
coord_east_param.setHelp("The eastern coordinate of the output raster in [m].")
self.addParameter(coord_east_param)

coord_south_param = QgsProcessingParameterNumber(
name=self.alg_parameters[5],
description="Southern coordinate",
optional=True,
type=QgsProcessingParameterNumber.Double,
)
coord_south_param.setHelp("The southern coordinate of the output raster in [m].")
self.addParameter(coord_south_param)

target_epsg_param = QgsProcessingParameterCrs(
name=self.alg_parameters[6],
description="Coordinate system",
)
target_epsg_param.setHelp("The EPSG code for the output raster.")
self.addParameter(target_epsg_param)

self.addParameter(
QgsProcessingParameterExtent(
name=self.alg_parameters[0],
description="Extent",
optional=True,
)
target_pixel_size_param = QgsProcessingParameterNumber(
name=self.alg_parameters[7],
description="Target pixel size",
optional=True,
)
target_pixel_size_param.setHelp("The pixel size of the output raster.")
self.addParameter(target_pixel_size_param)

self.addParameter(
QgsProcessingParameterCrs(
name=self.alg_parameters[1],
description="Target CRS",
optional=True,
)
raster_width_param = QgsProcessingParameterNumber(
name=self.alg_parameters[8],
description="Raster width",
optional=True,
)
raster_width_param.setHelp("The width of the output raster.")
self.addParameter(raster_width_param)

self.addParameter(
QgsProcessingParameterNumber(
name=self.alg_parameters[2],
description="Target pixel size",
# optional=True,
defaultValue=0.01
)
raster_height_param = QgsProcessingParameterNumber(
name=self.alg_parameters[9],
description="Raster height",
optional=True,
)
raster_height_param.setHelp("The height of the output raster.")
self.addParameter(raster_height_param)

self.addParameter(
QgsProcessingParameterNumber(
name=self.alg_parameters[3],
description="Constant value to use.",
)
nodata_value_param = QgsProcessingParameterNumber(
name=self.alg_parameters[10],
description="Nodata value",
optional=True,
type=QgsProcessingParameterNumber.Double,
)
nodata_value_param.setHelp("The nodata value of the output raster.")
self.addParameter(nodata_value_param)

self.addParameter(
QgsProcessingParameterRasterDestination(
name=self.alg_parameters[4], description="out_raster",
)
output_raster_param = QgsProcessingParameterRasterDestination(
name=self.alg_parameters[11], description="Output raster"
)
output_raster_param.setHelp("The Output raster.")
self.addParameter(output_raster_param)
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