diff --git a/Project.toml b/Project.toml
index 05e7991..6c7004a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -32,4 +32,4 @@ RecipesBase = "1.1"
 Requires = "1.1"
 Unitful = "1.7"
 WriteVTK = "1.9"
-julia = "1.6"
\ No newline at end of file
+julia = "1.6"
diff --git a/src/plot/utility.jl b/src/plot/utility.jl
index b1a79c0..fdfbce5 100644
--- a/src/plot/utility.jl
+++ b/src/plot/utility.jl
@@ -27,7 +27,10 @@ function getdata2d(bd::BATLData, var::AbstractString,
          if plotrange[4] ==  Inf plotrange[4] = maximum(Y) end
       end
 
-      # Create grid values first.
+      if isinf(plotinterval)
+         # set a heuristic value
+         plotinterval = (plotrange[2] - plotrange[1]) / size(X,1)
+      end
       xi = range(plotrange[1], stop=plotrange[2], step=plotinterval)
       yi = range(plotrange[3], stop=plotrange[4], step=plotinterval)
       # Perform linear interpolation of the data (x,y) on grid(xi,yi)
diff --git a/test/runtests.jl b/test/runtests.jl
index 438cd11..abc5faf 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -54,6 +54,7 @@ end
    @testset "Reading 2D unstructured binary" begin
       #file = "z=0_raw_1_t25.60000_n00000258.out"
       #bd = load(file)
+      #TODO test getdata2d on gencoord
    end
 
    @testset "Reading 3D structured binary" begin