From 4ecffd8d773f0928fbae9723ac5f8978f568d925 Mon Sep 17 00:00:00 2001
From: Olly Smith <olly.smith@gmail.com>
Date: Thu, 14 Mar 2013 21:43:59 +0000
Subject: [PATCH] Ensure @width / @height are positive.

---
 lib/morris.grid.coffee | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/morris.grid.coffee b/lib/morris.grid.coffee
index a07f5e3..ef5204a 100644
--- a/lib/morris.grid.coffee
+++ b/lib/morris.grid.coffee
@@ -203,8 +203,8 @@ class Morris.Grid extends Morris.EventEmitter
           @measureText(@yAxisFormat(@ymax), @options.gridTextSize).width)
         @left += maxYLabelWidth
         @bottom -= 1.5 * @options.gridTextSize
-      @width = @right - @left
-      @height = @bottom - @top
+      @width = Math.max(1, @right - @left)
+      @height = Math.max(1, @bottom - @top)
       @dx = @width / (@xmax - @xmin)
       @dy = @height / (@ymax - @ymin)
       @calc() if @calc