matplotlib tutorial 1

matplot1.py

#!/usr/bin/env python

if __name__ == "__main__":
    import sys
    import numpy as np
    from matplotlib import pyplot as plt

    infile = sys.argv[1]
    data = np.loadtxt(infile)

    x = data[0,:]
    y1 = data[1,:]
    y2 = data[2,:]

    # keywords for styles:
    # --------------------------------------------------------------------------
    # ls, linestyle ... '..', '.-', '-', '--'
    # lw, width ... 1 is the default
    # c, color ... obvious, except for k: black
    # mfc: marker face color

    plt.semilogx(x, y1, c='k', ms=5, marker='x', ls='-.', label="series 1")
    plt.semilogx(x, y2, c='k', ms=5, marker='o', ls='--', label="the!")
    plt.xlabel(r"the $x_\xi$ axis", fontsize=18)
    plt.ylabel(r"the $\mathbf{y_\rho}$ axis", fontsize=18)
    plt.title("that's it")
    plt.legend(loc="best")
    plt.show()

    # for a hardcopy, use
    # plt.savefig("hardcopy.ps")