From: W. Trevor King <wking@drexel.edu>
Date: Tue, 9 Nov 2010 18:22:53 +0000 (-0500)
Subject: Document raster direction in plot_image.py.
X-Git-Url: http://git.tremily.us/gitweb.cgi?a=commitdiff_plain;h=bbc2f27977cde8c17385df38b2ef80a199568bc3;p=assignment-template.git

Document raster direction in plot_image.py.
---

diff --git a/src/plot_image/plot_image.py b/src/plot_image/plot_image.py
index 0262cfd..4854eea 100755
--- a/src/plot_image/plot_image.py
+++ b/src/plot_image/plot_image.py
@@ -10,7 +10,20 @@ Step 2: pipe data into python script::
 
     ./gen_data | ./plot_image.py -s nx,ny -c nc -t 'image title'
 
-Data should be one ASCII float per line,
+Data should be one ASCII float per line, in the following order::
+
+    z[x1,y1]
+    z[x2,y1]
+    ...
+    z[nN,y1]
+    z[x1,y2]
+    ...
+    z[xN,y2]
+    ...
+    z[xN,yN]
+
+where `x` increases from `x1` to `xN` and `y` increases from `y1`
+through `yN`.
 
 For  usage info, run::