Add opacity parameter to create_coverage

Author: MarkTNO

geo/Geoserver.py

@@ -1181,6 +1181,7 @@ def create_coveragestyle(
         color_ramp: str = "RdYlGn_r",
         cmap_type: str = "ramp",
         number_of_classes: int = 5,
+        opacity: float = 1,
     ):
         """Dynamically create style for raster.
 
@@ -1192,6 +1193,7 @@ def create_coveragestyle(
         color_ramp : str
         cmap_type : str TODO: This should be a set of the available options : {"ramp", "linear", ... }
         number_of_classes : int
+        opacity : float
         overwrite : bool
 
         Notes
@@ -1213,6 +1215,7 @@ def create_coveragestyle(
             min_value,
             max_value,
             number_of_classes,
+            opacity,
         )
         style_xml = "<style><name>{}</name><filename>{}</filename></style>".format(
             style_name, style_name + ".sld"

geo/Style.py

@@ -82,7 +82,7 @@ def coverage_style_colormapentry(
 
 
 def coverage_style_xml(
-    color_ramp, style_name, cmap_type, min_value, max_value, number_of_classes
+    color_ramp, style_name, cmap_type, min_value, max_value, number_of_classes, opacity
 ):
     min_max_difference = max_value - min_value
     style_append = ""
@@ -108,6 +108,7 @@ def coverage_style_xml(
         <sld:FeatureTypeStyle>
             <sld:Rule>
             <sld:RasterSymbolizer>
+                <sld:Opacity>{3}</sld:Opacity>
                 <sld:ChannelSelection>
                 <sld:GrayChannel>
                     <sld:SourceChannelName>1</sld:SourceChannelName>
@@ -123,7 +124,7 @@ def coverage_style_xml(
     </UserLayer>
     </StyledLayerDescriptor>
     """.format(
-        cmap_type, style_append, style_name
+        cmap_type, style_append, style_name, opacity
     )
 
     with open("style.sld", "w") as f: