Ensure that colorbarticks makeisolevels always contain the limits

Author: j-fu

Project.toml

@@ -1,7 +1,7 @@
 name = "GridVisualizeTools"
 uuid = "5573ae12-3b76-41d9-b48c-81d0b6e61cc5"
 authors = ["Jürgen Fuhrmann <juergen-fuhrmann@web.de>"]
-version = "1.0.0"
+version = "1.1.0"
 
 [deps]
 ColorSchemes = "35d6a980-a343-548e-a6ea-1d62b119f2f4"

src/planeslevels.jl

@@ -48,8 +48,8 @@ Update levels, limits, colorbartics based on vector given in func.
 
 - if `limits[1]>limits[2]`, replace it by `extrema(func)`.
 - if levels is a number, replace it with a linear range in `limits` of length levels+2
-- if colorbarticks is `nothing` replace it with levels, otherwise, if it is a number, replace it
-  with a linear range of corresponding length
+- if colorbarticks is `nothing` replace it with levels and add the limits to the result
+  otherwise, if it is a number, replace it  with a linear range of corresponding length
 """
 function makeisolevels(func::Vector{T}, levels, limits, colorbarticks) where {T <: Number}
     makeisolevels([func], levels, limits, colorbarticks)
@@ -66,7 +66,7 @@ function makeisolevels(funcs::Vector{T}, levels, limits, colorbarticks) where {T
     end
 
     if colorbarticks == nothing
-        colorbarticks = levels
+        colorbarticks = unique([limits[1], levels..., limits[2]])
     elseif isa(colorbarticks, Number)
         colorbarticks = collect(limits[1]:((limits[2] - limits[1]) / (colorbarticks - 1)):limits[2])
     end