Re: [Matplotlib-users] Re: Autoscale in pylab-interface

[Nikolai H. <nik...@ma...>]

Hi Mark, hi everyone

The code I posted was taken from one of my programs
and for the sake of simplicity I left a few parts out.
That may have made my intention a bit unclear.
I'm sorry for that.

Here are all the relevant parts:

def main():

    if cts['show_qm']: qmx, qmy = read_qm()
    if cts['show_cm']: cmx, cmy = read_cm()

    figure(1)
    ax = subplot(111)
    axis((-0.25,2.0,0.0,1.3))
    axis('scaled')
    ax.set_autoscale_on(False)

    for i in range(100):
        if cts['show_qm']: plot((qmx[i],qmx[i]),(qmy[i],qmy[i]),'bo')
        if cts['show_cm']: plot((cmx[i],cmx[i]),(cmy[i],cmy[i]),'go')
        raw_input('Press <enter> to continue')


if __name__ == "__main__":
    ion()
    main()
    show()

The program reads two lists of points and plots them one
by one so I can compare them, which is why I need axis('scaled'). The
autoscale property on the other hand is used that the plot commands in
the for loop don't thouch the axis. The program does exactly what I want
it to do and is fast enough despite my inefficient code since it only
has to plot 100 points.

But since there is only one axis in the figure I thought it would be a
good idea if I could disable autoscaling in the way the limits and the
'scaled' property were set.
The other point I wrote this was because I couldn't find any
documentation on the autoscale behaviour except for an old thread on
this list. If autoscale would be an option of the axis command it could
be found on:
http://matplotlib.sourceforge.net/pylab_commands.html

Best regards,
Nikolai


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"1984" is not a howto!