Change default colormap from 'cool' to 'viridis' (#828)

* Change default colormap from 'cool' to 'viridis'

Viridis is the Matplotlib default. It's a beautiful colormap that is
colorblind-friendly and perceptually uniform.

* Update test to use "viridis" color ramp

Author: mfisher87

packages/base/src/dialogs/symbology/components/color_ramp/ColorRamp.tsx

@@ -51,7 +51,7 @@ const ColorRamp: React.FC<IColorRampProps> = ({
     }
     setNumberOfShades(nClasses ? nClasses : '9');
     setSelectedMode(singleBandMode ? singleBandMode : 'equal interval');
-    setSelectedRamp(colorRamp ? colorRamp : 'cool');
+    setSelectedRamp(colorRamp ? colorRamp : 'viridis');
   };
 
   return (

packages/base/src/dialogs/symbology/vector_layer/types/Heatmap.tsx

@@ -23,7 +23,7 @@ const Heatmap: React.FC<ISymbologyDialogProps> = ({
     radius: 8,
     blur: 15,
   });
-  const selectedRampRef = useRef('cool');
+  const selectedRampRef = useRef('viridis');
   const heatmapOptionsRef = useRef({
     radius: 8,
     blur: 15,
@@ -55,7 +55,7 @@ const Heatmap: React.FC<ISymbologyDialogProps> = ({
       colorRamp = layer.parameters.symbologyState.colorRamp;
     }
 
-    setSelectedRamp(colorRamp ? colorRamp : 'cool');
+    setSelectedRamp(colorRamp ? colorRamp : 'viridis');
   };
 
   const handleOk = () => {

packages/schema/src/schema/project/layers/heatmapLayer.json

@@ -44,7 +44,7 @@
         },
         "colorRamp": {
           "type": "string",
-          "default": "cool"
+          "default": "viridis"
         }
       }
     }

packages/schema/src/schema/project/layers/vectorLayer.json

@@ -39,7 +39,7 @@
         },
         "colorRamp": {
           "type": "string",
-          "default": "cool"
+          "default": "viridis"
         },
         "nClasses": {
           "type": "string",

packages/schema/src/schema/project/layers/webGlLayer.json

@@ -77,7 +77,7 @@
         },
         "colorRamp": {
           "type": "string",
-          "default": "cool"
+          "default": "viridis"
         },
         "nClasses": {
           "type": "string",

python/jupytergis_qgis/jupytergis_qgis/qgis_loader.py

@@ -212,7 +212,7 @@ def qgis_layer_to_jgis(
                 case_conditions.append([r, g, b, a / 255])
 
             layer_parameters["symbologyState"] = {
-                "colorRamp": "cool",
+                "colorRamp": "viridis",
                 "mode": "",
                 "nClasses": "",
                 "renderType": "Categorized",

python/jupytergis_qgis/jupytergis_qgis/tests/test_qgis.py

@@ -302,7 +302,7 @@ def test_qgis_saver():
                     "opacity": 1.0,
                     "source": source_ids[6],
                     "symbologyState": {
-                        "colorRamp": "cool",
+                        "colorRamp": "viridis",
                         "mode": "",
                         "nClasses": "",
                         "renderType": "Categorized",