# plotting with the pylab module from matplotlib # free from: http://matplotlib.sourceforge.net/ # used windows istaller matplotlib-0.90.0.win32-py2.5.exe # tested with Python25 EU 4/21/2007 import math import pylab # matplotlib # create the x list data # arange() is just like range() but allows float numbers x_list = pylab.arange(0.0, 5.0, 0.01) # calculate the y list data y_list = [] for x in x_list: y = math.cos(2*math.pi*x) * math.exp(-x) y_list.append(y) pylab.xlabel("x") pylab.ylabel("cos(2pi * x) * exp(-x)") # draw the plot with a blue line 'b' (is default) # using x,y data from the x_list and y_list # (these lists can be brought in from other programs) # # other drawing styles --> # 'r' red line, 'g' green line, 'y' yellow line # 'ro' red dots as markers, 'r.' smaller red dots, 'r+' red pluses # 'r--' red dashed line, 'g^' green triangles, 'bs' blue squares # 'rp' red pentagons, 'r1', 'r2', 'r3', 'r4' well, check out the markers # pylab.plot(x_list, y_list, 'b') # save the plot as a PNG image file (optional) pylab.savefig('d:\PracticasPython\Fig1.png') # show the pylab plot window # you can zoom the graph, drag the graph, change the margins, save the graph pylab.show()
Esto es lo que aparece:
Y esta es la imagen que guarda: