Delete the background of a map of administrative divisions

Questions
,
1

Hello. I am trying to build a map of Colombia, in which I attach a specific color. each of its departments (the main administrative division of the country) .

The following code seems to be working quite well:

colores = {Blue, Yellow, RGBColor[1, 0, 0], Yellow, Darker[Orange], 
   Yellow, White, Darker[Orange], Yellow, Darker[Orange], 
   Darker[Red], RGBColor[0.35, 0, 0.35], Darker[Red], Cyan, Blue, 
   Blue, Blue, RGBColor[0.35, 0, 0.35], RGBColor[0.35, 0, 0.35], 
   Darker[Red], Darker[Orange], White, White, Cyan, White, White, 
   White, Darker[Orange], Darker[Red], White, White, Blue, Blue} ;

departamentos = 
  Entity["Country", "Colombia"][
   EntityProperty["Country", "AdministrativeDivisions"]];
mapita=GeoGraphics[{EdgeForm[Black], FaceForm[colores[[1]]], 
  Polygon[departamentos[[1]]], FaceForm[colores[[2]]], 
  Polygon[departamentos[[2]]], FaceForm[colores[[3]]], 
  Polygon[departamentos[[3]]], FaceForm[colores[[4]]], 
  Polygon[departamentos[[4]]], FaceForm[colores[[5]]], 
  Polygon[departamentos[[5]]], FaceForm[colores[[6]]], 
  Polygon[departamentos[[6]]], FaceForm[colores[[7]]], 
  Polygon[departamentos[[7]]], FaceForm[colores[[8]]], 
  Polygon[departamentos[[8]]], FaceForm[colores[[9]]], 
  Polygon[departamentos[[9]]], FaceForm[colores[[10]]], 
  Polygon[departamentos[[10]]], FaceForm[colores[[11]]], 
  Polygon[departamentos[[11]]], FaceForm[colores[[12]]], 
  Polygon[departamentos[[12]]], FaceForm[colores[[13]]], 
  Polygon[departamentos[[13]]], FaceForm[colores[[14]]], 
  Polygon[departamentos[[14]]], FaceForm[colores[[15]]], 
  Polygon[departamentos[[15]]], FaceForm[colores[[16]]], 
  Polygon[departamentos[[16]]], FaceForm[colores[[17]]], 
  Polygon[departamentos[[17]]], FaceForm[colores[[18]]], 
  Polygon[departamentos[[18]]], FaceForm[colores[[19]]], 
  Polygon[departamentos[[19]]], FaceForm[colores[[20]]], 
  Polygon[departamentos[[20]]], FaceForm[colores[[21]]], 
  Polygon[departamentos[[21]]], FaceForm[colores[[22]]], 
  Polygon[departamentos[[22]]], FaceForm[colores[[23]]], 
  Polygon[departamentos[[23]]], FaceForm[colores[[24]]], 
  Polygon[departamentos[[24]]], FaceForm[colores[[25]]], 
  Polygon[departamentos[[25]]], FaceForm[colores[[26]]], 
  Polygon[departamentos[[26]]], FaceForm[colores[[27]]], 
  Polygon[departamentos[[27]]], FaceForm[colores[[28]]], 
  Polygon[departamentos[[28]]], FaceForm[colores [[29]]], 
  Polygon[departamentos[[29]]], FaceForm[colores[[30]]], 
  Polygon[departamentos[[30]]], FaceForm[colores[[31]]], 
  Polygon[departamentos[[31]]], FaceForm[colores[[32]]], 
  Polygon[departamentos[[32]]], FaceForm[colores[[33]]], 
  Polygon[departamentos[[33]]]}]

However, I have not managed to build a map without the background (which in this case is a nuisance). I have tried to plug in GeoBackground->None at different parts of the code, but without success. How can I dispose of the pesky background?

Any help appreciated.

Francisco

2

GeoBackground is an option for GeoGraphics. If you just put GeoBackground->None at the end of the expression inside GeoGraphics, it will remove the background.

GeoGraphics[{EdgeForm[Black], FaceForm[colores[[1]]], /* removed a bunch of elements for clarity */
  FaceForm[colores[[33]]], 
  Polygon[departamentos[[33]]]}, GeoBackground -> None]

You said that you tried GeoBackground->None at different parts, so I would have thought you would have tried it there. So maybe the result isn’t what you want. If the result isn’t what you want, then please provide more detail about what you do want.

3

A more compact way of generating the regions

regions = {Polygon[departamentos[[#]]], FaceForm[colores[[#]]]} & /@ 
    Range@Length@departamentos // Flatten;
mapita = 
 GeoGraphics[Prepend[regions, EdgeForm[Black]], GeoBackground -> None]

10273plot.png
10273plot.png312×420 6.18 KB

4

Many thanks Eric and Rohit, very useful!