Merge pull request #201 from geo-engine/multiband-colorizer

Multiband colorizer

Author: jdroenner

examples/colorizer.ipynb

@@ -26,7 +26,8 @@
     RasterResultDescriptor, Provenance, UnitlessMeasurement, ContinuousMeasurement, \
     ClassificationMeasurement, BoundingBox2D, TimeInterval, SpatialResolution, SpatialPartition2D, \
     RasterSymbology, VectorSymbology, VectorDataType, VectorResultDescriptor, VectorColumnInfo, \
-    FeatureDataType, RasterBandDescriptor, DEFAULT_ISO_TIME_FORMAT, RasterColorizer, SingleBandRasterColorizer \
+    FeatureDataType, RasterBandDescriptor, DEFAULT_ISO_TIME_FORMAT, RasterColorizer, SingleBandRasterColorizer, \
+    MultiBandRasterColorizer
 
 from .util import clamp_datetime_ms_ns
 from .workflow import WorkflowId, Workflow, workflow_by_id, register_workflow, get_quota, update_quota

geoengine/__init__.py

@@ -207,10 +207,6 @@ def palette_with_colormap(
             default_color=default_color,
         )
 
-    @staticmethod
-    def rgba() -> RgbaColorizer:
-        return RgbaColorizer()
-
     @abstractmethod
     def to_api_dict(self) -> geoengine_openapi_client.Colorizer:
         pass
@@ -230,8 +226,6 @@ def from_response(response: geoengine_openapi_client.Colorizer) -> Colorizer:
             return PaletteColorizer.from_response_palette(inner)
         if isinstance(inner, geoengine_openapi_client.LogarithmicGradient):
             return LogarithmicGradientColorizer.from_response_logarithmic(inner)
-        if isinstance(inner, geoengine_openapi_client.RgbaColorizer):
-            return RgbaColorizer.from_response_rgba(inner)
 
         raise TypeError("Unknown colorizer type")
 
@@ -319,22 +313,3 @@ def to_api_dict(self) -> geoengine_openapi_client.Colorizer:
             default_color=self.default_color,
             no_data_color=self.no_data_color,
         ))
-
-
-class RgbaColorizer(Colorizer):
-    '''A Rgba colorizer.'''
-
-    def __init__(self, no_data_color: Rgba = (0, 0, 0, 0)):
-        super().__init__(no_data_color)
-
-    @staticmethod
-    def from_response_rgba(_response: geoengine_openapi_client.RgbaColorizer) -> RgbaColorizer:
-        """Create a colorizer from a response."""
-
-        return RgbaColorizer()
-
-    def to_api_dict(self) -> geoengine_openapi_client.Colorizer:
-        """Return the colorizer as a dictionary."""
-        return geoengine_openapi_client.Colorizer(geoengine_openapi_client.RgbaColorizer(
-            type='rgba',
-        ))

geoengine/colorizer.py

@@ -979,6 +979,8 @@ def from_response(cls, response: geoengine_openapi_client.RasterColorizer) -> Ra
 
         if isinstance(inner, geoengine_openapi_client.SingleBandRasterColorizer):
             return SingleBandRasterColorizer.from_single_band_response(inner)
+        if isinstance(inner, geoengine_openapi_client.MultiBandRasterColorizer):
+            return MultiBandRasterColorizer.from_multi_band_response(inner)
 
         raise GeoEngineException({"message": "Unknown RasterColorizer type"})
 
@@ -1009,6 +1011,58 @@ def to_api_dict(self) -> geoengine_openapi_client.RasterColorizer:
         ))
 
 
+@dataclass
+class MultiBandRasterColorizer(RasterColorizer):
+    '''A raster colorizer for multiple bands'''
+
+    blue_band: int
+    blue_max: float
+    blue_min: float
+    blue_scale: Optional[float]
+    green_band: int
+    green_max: float
+    green_min: float
+    green_scale: Optional[float]
+    red_band: int
+    red_max: float
+    red_min: float
+    red_scale: Optional[float]
+
+    @staticmethod
+    def from_multi_band_response(response: geoengine_openapi_client.MultiBandRasterColorizer) -> RasterColorizer:
+        return MultiBandRasterColorizer(
+            response.blue_band,
+            response.blue_max,
+            response.blue_min,
+            response.blue_scale,
+            response.green_band,
+            response.green_max,
+            response.green_min,
+            response.green_scale,
+            response.red_band,
+            response.red_max,
+            response.red_min,
+            response.red_scale
+        )
+
+    def to_api_dict(self) -> geoengine_openapi_client.RasterColorizer:
+        return geoengine_openapi_client.RasterColorizer(geoengine_openapi_client.MultiBandRasterColorizer(
+            type='multiBand',
+            blue_band=self.blue_band,
+            blue_max=self.blue_max,
+            blue_min=self.blue_min,
+            blue_scale=self.blue_scale,
+            green_band=self.green_band,
+            green_max=self.green_max,
+            green_min=self.green_min,
+            green_scale=self.green_scale,
+            red_band=self.red_band,
+            red_max=self.red_max,
+            red_min=self.red_min,
+            red_scale=self.red_scale
+        ))
+
+
 class RasterSymbology(Symbology):
     '''A raster symbology'''
     __opacity: float

geoengine/types.py

@@ -18,7 +18,7 @@ package_dir =
 packages = find:
 python_requires = >=3.9
 install_requires =
-    geoengine-openapi-client == 0.0.13
+    geoengine-openapi-client @ git+https://github.com/geo-engine/openapi-client@multiband-colorizer#subdirectory=python # TODO update when merged
     geopandas >=0.9,<0.15
     matplotlib >=3.5,<3.8
     numpy >=1.21,<2