Computation times

00:15.038 total execution time for 8 files from auto_examples:

Example	Time	Mem (MB)
PPM in 2D (ppm_2D.py)	00:04.475	0.0
Unevenly spaced data (pcolor_example.py)	00:04.151	0.0
Plotting Routines (image_plot.py)	00:02.530	0.0
ppm Example (ppm_example.py)	00:01.387	0.0
Simple Convolution Example (convolution.py)	00:01.008	0.0
Basic Slicing/Filtering Example (basic_example.py)	00:00.854	0.0
Polynomial Fitting (polyfit.py)	00:00.407	0.0
Error and units example (error_example.py)	00:00.227	0.0