Module:Infobox mapframe: Difference between revisions

Module:Infobox mapframe (view source)

578 bytes added , 23 July 2023

Fix

13,401

edits

@@ Line 104: / Line 104: @@
      local mapframe = p._main(parentArgs)
      return frame:preprocess(mapframe)
+end
+function getZoom(value, unit)
+    local length_km
+    if unit == 'km' then
+        length_km = tonumber(value)
+    elseif unit == 'mi' then
+        length_km = tonumber(value)*1.609344
+    elseif unit == 'km2' then
+        length_km = math.sqrt(tonumber(value))
+    elseif unit == 'mi2' then
+        length_km = math.sqrt(tonumber(value))*1.609344
+    end
+    -- max for zoom 2 is 6400km, for zoom 3 is 3200km, for zoom 4 is 1600km, etc
+    local zoom = math.floor(8 - (math.log10(length_km) - 2)/(math.log10(2)))
+    -- limit to values below 17
+    zoom = math.min(17, zoom)
+    -- take off 1 when calculated from area, to account for unusual shapes
+    if unit == 'km2' or unit == 'mi2' then
+        zoom = zoom - 1
+    end
+    -- minimum value is 1
+    return math.max(1, zoom)
 end
@@ Line 121: / Line 144: @@
      args["frame-align"]  = "center"
-     args["frame-coord"] = config["frame-coordinates"] or config["frame-coord"] or ""
+     args["frame-coord"] = config["frame-coordinates"] or ""
-    -- Note: config["coordinates"] or config["coord"] should not be used for the alignment of the frame;
-    -- see talk page ( https://en.wikipedia.org/wiki/Special:Diff/876492931 )
      -- deprecated lat and long parameters