From 314053af54eca9777763874b2b16b8bedd8b0071 Mon Sep 17 00:00:00 2001
From: Thomas Breloff <tom@breloff.com>
Date: Fri, 27 May 2016 09:05:48 -0400
Subject: [PATCH] gr hist2d fix; closes #253

---
 src/backends/gr.jl | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/backends/gr.jl b/src/backends/gr.jl
index 4536d2c4..16599387 100644
--- a/src/backends/gr.jl
+++ b/src/backends/gr.jl
@@ -929,8 +929,9 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
                 xbins = ybins = d[:bins]
             end
             x, y, H = Base.hist2d(E, xbins, ybins)
-            counts = round(Int32, 1000 + 255 * H / maximum(H))
-            n, m = size(counts)
+            maxh = maximum(H)
+            n, m = size(H)
+            counts = Int32[round(Int32, 1000 + 255 * H[n-i+1,j] / maxh) for i=1:n,j=1:m]
             GR.cellarray(xmin, xmax, ymin, ymax, n, m, counts)
 
             # NOTE: set viewport to the colorbar area, get character height, draw it, then reset viewport