From 69164460892a797f283d2a6b9ce40bcf40658373 Mon Sep 17 00:00:00 2001
From: Stormwind <stormwind@stormwinds-page.de>
Date: Sun, 26 Apr 2015 07:30:25 +0200
Subject: [PATCH] Tidy up not needed variables

---
 lib/rubella/output/image.rb | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/lib/rubella/output/image.rb b/lib/rubella/output/image.rb
index 10f263b..1a256b1 100644
--- a/lib/rubella/output/image.rb
+++ b/lib/rubella/output/image.rb
@@ -28,12 +28,9 @@ module Rubella
       # @return RMagick::Image
       #
       def render
-        buckets = @data.dataset_length
-        columns = @data.length
-
         # image size
-        x = columns*@field_size
-        y = buckets*@field_size
+        x = @data.length*@field_size         # columns x field_size
+        y = @data.dataset_length*@field_size # buckets x field_size
 
         # start drawing the damn thing
         image = Magick::Image.new(x, y) { self.background_color = "white" }