🐛 🎉 recipes fixes

Closes #6
Closes #7

src/recipes/recipes.jl

@@ -2,23 +2,23 @@
    seriestype --> :heatmap
    @assert eltype(layer) <: Number
    if get(plotattributes, :seriestype, :heatmap) == :heatmap
-      x --> longitudes(layer)
-      y --> latitudes(layer)
-      z --> layer.grid
+      longitudes(layer), latitudes(layer), layer.grid
    elseif get(plotattributes, :seriestype, :histogram) in [:histogram, :density]
       filter(!isnan, layer.grid)
    end
 end
 
 @recipe function plot(l1::T, l2::T) where {T <: SimpleSDMLayer}
    seriestype --> :scatter
-   @assert eltype(l1) <: Number
-   @assert eltype(l2) <: Number
-   @assert size(l1) == size(l2)
-   @assert l1.top == l2.top
-   @assert l1.left == l2.left
-   @assert l1.bottom == l2.bottom
-   @assert l1.right == l2.right
-   valid_i =filter(i -> !(isnan(l1[i])|isnan(l2[i])), eachindex(l1.grid))
-   l1.grid[valid_i], l2.grid[valid_i]
+   if get(plotattributes, :seriestype, :scatter) in [:scatter, :histogram2d]
+      @assert eltype(l1) <: Number
+      @assert eltype(l2) <: Number
+      @assert size(l1) == size(l2)
+      @assert l1.top == l2.top
+      @assert l1.left == l2.left
+      @assert l1.bottom == l2.bottom
+      @assert l1.right == l2.right
+      valid_i =filter(i -> !(isnan(l1[i])|isnan(l2[i])), eachindex(l1.grid))
+      l1.grid[valid_i], l2.grid[valid_i]
+   end
 end

test/plots.jl

@@ -26,4 +26,9 @@ xaxis!("Temperature")
 yaxis!("Precipitation")
 savefig(joinpath("gallery", "scatter.png"))
 
+histogram2d(temperature, precipitation, leg=false)
+xaxis!("Temperature")
+yaxis!("Precipitation")
+savefig(joinpath("gallery", "scatter-2d.png"))
+
 end