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object --+ | ??.instance --+ | RasterSymbolizer
Instance Methods | |||
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Inherited from Inherited from |
Class Variables | |
__instance_size__ = 112
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Properties | |
colorizer Get/Set the RasterColorizer used to color data rasters. |
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comp_op Set/get the raster comp-op |
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filter_factor Get/Set the filter factor used by the datasource. |
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mesh_size Get/Set warping mesh size. |
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mode Get/Set merging mode. |
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opacity Get/Set opacity. |
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premultiplied Get/Set premultiplied status of the source image. |
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scaling Get/Set scaling algorithm. |
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Inherited from |
Method Details |
__init__( (object)arg1) -> None : Default ctor C++ signature : void __init__(_object*)
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helper for pickle
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Property Details |
colorizerGet/Set the RasterColorizer used to color data rasters. Usage: >>> from mapnik import RasterSymbolizer, RasterColorizer >>> r = RasterSymbolizer() >>> r.colorizer = RasterColorizer() >>> for value, color in [ ... (0, "#000000"), ... (10, "#ff0000"), ... (40, "#00ff00"), ... ]: ... r.colorizer.append_band(value, color)
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comp_opSet/get the raster comp-op
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filter_factorGet/Set the filter factor used by the datasource. This is used by the Raster or Gdal datasources to pre-downscale images using overviews. Higher numbers can sometimes cause much better scaled image output, at the cost of speed. Examples: -1.0 : (Default) A suitable value will be determined from the chosen scaling method during rendering. 1.0 : The datasource will take care of all the scaling (using nearest neighbor interpolation) 2.0 : The datasource will scale the datasource to 2.0x the desired size, and mapnik will scale the rest of the way using the interpolation defined in self.scaling.
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mesh_sizeGet/Set warping mesh size. Larger values result in faster warping times but might result in distorted maps. Usage: >>> from mapnik import RasterSymbolizer >>> r = RasterSymbolizer() >>> r.mesh_size = 32
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modeGet/Set merging mode. (deprecated, use comp_op instead)
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opacityGet/Set opacity. Usage: >>> from mapnik import RasterSymbolizer >>> r = RasterSymbolizer() >>> r.opacity = .5
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premultipliedGet/Set premultiplied status of the source image. Can be used to override what the source data reports (when in error) Usage: >>> from mapnik import RasterSymbolizer >>> r = RasterSymbolizer() >>> r.premultiplied = False
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scalingGet/Set scaling algorithm. Usage: >>> from mapnik import RasterSymbolizer >>> r = RasterSymbolizer() >>> r.scaling = 'mapnik.scaling_method.GAUSSIAN'
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