start of a filter library.

Beginning with a moving average filter.

Filter.h

@@ -0,0 +1,33 @@
+/*
+ *	I'd like to have a library I can call for basic filtering operations.
+ *	
+ *	Most sensors in small scale robotics are noisy.  For example as a
+ *	mobile robot approaches a wall, an atached ulrasonic sensor should
+ *	give readings in cm similar to the list below
+ *
+ *	11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, ...bump!
+ *
+ *	but all too often the data will come back like this
+ *
+ *  11, 10, 6, 8, 7, 3, 5, 4, 1, 2, 1, ..bump!
+ *
+ *  By filtering the raw data, via a moving average or other more 
+ *	specialized filter we can use the noisy data as an input to our
+ *	filter and then the processed data will give us a better linear
+ *	output.  This linear output still doesn't match the exact distance
+ *  to the wall, but it is a much closer approximation than the noisy
+ *	data and provides a better set of data for the robot to make 
+ *	control decisions from.
+ *
+ */
+
+#ifndef FILTER_h
+#define FILTER_h 
+
+//*******************************************************************
+//*                         MOVING AVERAGE
+//*******************************************************************
+class Moving_average
+
+
+#endif