Where LDPs in England and Wales are operated by National Trails

and have a `ref` value,
display a black and white shield with that `ref` on it.

Author: Andy Townsend

resources/changelog_svwd01.md

@@ -5,6 +5,7 @@ See also the [changelog](https://github.com/SomeoneElseOSM/SomeoneElse-vector-we
 Draw embankment casings (via `levee`) after other casings.
 Show embankments on roads (via `bridge=levee`) on `motorway`, `unclassified`, `residential`, `living_street`, `service` and `pedestrian`.
 Show embankments on a variety of paths, steps and tracks (via `bridge=levee`).
+Where LDPs in England and Wales are operated by National Trails and have a `ref` value, display a black and white shield with that `ref` on it.
 
 ## 16/01/2025
 At zoom 12, make unclassified and service roads slightly more visible.

resources/svwd01_call_icon_convert.sh

@@ -992,6 +992,7 @@ cp ~/src/SomeoneElse-vector-web-display/resources/svwd01_source_icons/shield_tru
 cp ~/src/SomeoneElse-vector-web-display/resources/svwd01_source_icons/shield_trunk_long.png                  ~/src/SomeoneElse-vector-web-display/resources/svwd01_icons/shield_trunk_long.png
 cp ~/src/SomeoneElse-vector-web-display/resources/svwd01_source_icons/shield_other_short.png                 ~/src/SomeoneElse-vector-web-display/resources/svwd01_icons/shield_other_short.png
 cp ~/src/SomeoneElse-vector-web-display/resources/svwd01_source_icons/shield_other_long.png                  ~/src/SomeoneElse-vector-web-display/resources/svwd01_icons/shield_other_long.png
+cp ~/src/SomeoneElse-vector-web-display/resources/svwd01_source_icons/shield_NT.png                          ~/src/SomeoneElse-vector-web-display/resources/svwd01_icons/shield_NT.png
 
 #
 # Oneway marker

resources/svwd01_icons/shield_NT.png

@@ -17693,6 +17693,38 @@
 	    },
 	    "minzoom": 15
 	},
+	{
+	    "id": "label-shield-NT-15",
+	    "type": "symbol",
+	    "source-layer": "transportation",
+	    "filter": [ "all", [ "in", "class", "ldpnwn" ],
+                               [ "has", "ref" ],
+                               [ "==", "operator", "National Trails" ] ],
+	    "layout": {
+                "icon-image": "shield_NT",
+		"icon-size": { "stops": [ [ 15, 1.0 ], 
+                                          [ 17, 1.0 ], 
+                                          [ 20, 3.0 ] ] },
+		"text-field": "{ref}",
+		"text-font": [ "KlokanTech Noto Sans Regular" ],
+		"symbol-placement": "line",
+		"symbol-spacing": { "stops": [ [ 10,  450 ],
+                                               [ 20, 1800 ] ] },
+		"text-rotation-alignment": "viewport",
+		"text-offset": [0, 0],
+		"text-size": { "stops": [ [ 15,  5 ], 
+                                          [ 17,  5 ], 
+                                          [ 20, 15 ] ] }
+	    },
+	    "source": "someoneelse",
+	    "paint": {
+		"text-color": "black",
+		"text-halo-color": "rgba(255, 255, 255, 0.8)",
+		"text-halo-width": 0,
+		"text-halo-blur": 0
+	    },
+	    "minzoom": 15
+	},
 	{
 	    "id": "poi-centroid-12",
 	    "type": "symbol",