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How to draw a simple line using python and the matplotlib API -

Date: 2007-01-05  |   Tags: matplotlib, python
I'm continuing to learn the low level object oriented matplotlib API. My goal is to create very customizable, perfect plots. Here is how to draw a simple line. First create a figure that is 4 inches by 4 inches. Then create some axes with a 10% margin around each edge. Then add the axes to the figure. Then create a line from (0,0) to (1,1). Then add the line to the axes. Then create a canvase. Then create the .png file. Looks like good object oriented python fun to me... 


""" line_ex.py                                             
 """                                                        
 from matplotlib.figure import Figure                       
 from matplotlib.axes import Axes                           
 from matplotlib.lines import Line2D                        
 from matplotlib.backends.backend_agg import FigureCanvasAgg
 
 fig = Figure(figsize=[4,4])                                
 ax = Axes(fig, [.1,.1,.8,.8])                              
 fig.add_axes(ax)                                           
 l = Line2D([0,1],[0,1])                                    
 ax.add_line(l)                                             
 
 canvas = FigureCanvasAgg(fig)                              
 canvas.print_figure("line_ex.png")

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