Few TODO comments added as well as a method called get_value

formats/asciigrid.py

@@ -89,6 +89,7 @@ class AsciiGrid(GridEnvelope2D, Raster):
     def readheader(self):
         # Assume that the file is open; read header of the file and assign all attributes 
         if (self.datafile != None):
+            # TODO: make this case-insensitive!
             if (not self.datafile.closed):            
                 hl = self.datafile.readline();
                 self.ncols = int(hl.replace('ncols', ''));
@@ -187,6 +188,7 @@ class AsciiGrid(GridEnvelope2D, Raster):
         # We assume that exactly 1 row is included.
         try:          
             if (self.datatype == const.INTEGER):
+                # TODO deal with numpy arrays if necessary
                 for k in range(0, self.ncols):
                     s = str(sequence_with_data[k]).rjust(const.MAXDIGITSPERCELL + 1);
                     self.datafile.write(s);  
@@ -210,3 +212,10 @@ class AsciiGrid(GridEnvelope2D, Raster):
             self.readheader();
         super(AsciiGrid, self).reset() 
       
+    def get_value(self, i, k):    
+        # Return the wanted value
+        for _ in range(0, i): self.next(False)
+        line = self.next()
+        self.reset()
+        return line[int(k)]
+        
\ No newline at end of file