simplified slice + slice diff + register colormaps

analysis/colormaps.py

@@ -0,0 +1,36 @@
+
+
+def register_colormaps(colormaps):
+
+    # Register cmasher
+    try:
+        import cmasher as cma
+        for name, cmap in cma.cm.cmap_d.items():
+            try:
+                colormaps.register(name=name, cmap=cmap)
+            except ValueError:
+                pass
+    except ImportError:
+        pass
+
+    # Register cmocean
+    try:
+        import cmocean as cmo
+        for name, cmap in cmo.cm.cmap_d.items():
+            try:
+                colormaps.register(name=name, cmap=cmap)
+            except ValueError:
+                pass
+    except ImportError:
+        pass
+
+    # Register cmcrameri
+    try:
+        import cmcrameri as cmc
+        for name, cmap in cmc.cm.cmaps.items():
+            try:
+                colormaps.register(name=name, cmap=cmap)
+            except ValueError:
+                pass
+    except ImportError:
+        pass