Merge pull request #23 from EcoJulia/doc/gallery

🎨 change the gallery

docs/src/gallery.md

@@ -1,41 +1,45 @@
 ```@example gallery
 using NeutralLandscapes
 using Plots
+
+function demolandscape(alg::T) where {T <: NeutralLandscapeMaker}
+    heatmap(rand(alg, (200, 200)), frame=:none, aspectratio=1, c=:davos)
+end
 ```
 
 ## No gradient
 
 ```@example gallery
-heatmap(rand(NoGradient(), (45, 45)))
+demolandscape(NoGradient())
 ```
 
 ## Planar gradient
 
 ```@example gallery
-heatmap(rand(PlanarGradient(), (45, 45)))
+demolandscape(PlanarGradient(35))
 ```
 
 ## Edge gradient
 
 ```@example gallery
-heatmap(rand(EdgeGradient(), (45, 45)))
+demolandscape(EdgeGradient(186))
 ```
 
 ## Wave surface
 
 ```@example gallery
-heatmap(rand(WaveSurface(), (45, 45)))
+demolandscape(WaveSurface(35, 3))
 ```
 
 ## Distance gradient
 
 ```@example gallery
-sources = unique(rand(1:2025, 15))
-heatmap(rand(DistanceGradient(sources), (45, 45)))
+sources = unique(rand(1:40000, 50))
+demolandscape(DistanceGradient(sources))
 ```
 
 ## Rectangular cluster
 
 ```@example gallery
-heatmap(rand(RectangularCluster(), (45, 45)))
+demolandscape(RectangularCluster())
 ```