1 files changed, 47 insertions, 0 deletions
diff --git a/bin/pychart/category_coord.py b/bin/pychart/category_coord.py
new file mode 100644
index 00000000000..a84d3eb5d73
--- /dev/null
+++ b/bin/pychart/category_coord.py
@@ -0,0 +1,47 @@
+#
+# Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
+# 
+# Jockey is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2, or (at your option) any
+# later version.
+#
+# Jockey is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+import coord
+import canvas
+
+class T(coord.T):
+    def __init__(self, data, col):
+
+        """This attribute is meaningful only when x_coord_system ==
+        'category'. This attribute selects the column of
+        'x_category_data' from which X values are computed.
+        Meaningful only when x_coord_system == 'category'.  This
+        attribute specifies the data-set from which the X values are
+        extracted. See also x_category_col."""
+        
+        self.data = data
+        self.col = col
+        
+    def get_canvas_pos(self, size, val, min, max):
+        i = 0.5
+        for v in self.data:
+            if v[self.col] == val:
+                return size * i / float(len(self.data))
+            i += 1
+        # the drawing area is clipped. So negative offset will make this plot
+        # invisible.
+        return canvas.invalid_coord;
+    def get_tics(self, min, max, interval):
+        tics = []
+        if interval == None: interval = 1
+        
+        for i in range(0, len(self.data), interval):
+            tics.append(self.data[i][self.col])
+        return tics    
+        #return map(lambda pair, self = self: pair[self.col], self.data)
+