Hi, I am plotting two graphs in one according to
> http://matplotlib.sourceforge.net/examples/two_scales.py
> I want the plot belonging to the right axis to start with
> y=0. However,
> ax2.set_ylim(ymin=0.0)
> does not affect the plot at all.
It always helps to post a complete example; otherwise we have to use
our amazing powers of deduction to figure out what you might be doing
wrong. In this case, two possibilities come to mind:
1) you are calling set_ylim before a plot command and the autoscaler
is kicking on the plot command and overriding your changes. You
should call set_ylim after all plot commands, or turn autoscaling
off with the autoscale_on property of the Axes
2) you are working in interactive mode, eg ipython -pylab, and the
draw command is not being triggered since you are making an OO
call. You can force a draw command in pylab with "draw" or with
fig.canvas.draw().
The following *does* work for me, so maybe you can follow it as an
example
from pylab import *
ax1 = subplot(111)
t = arange(0.01, 10.0, 0.01)
s1 = exp(t)
plot(t, s1, 'b-')
xlabel('time (s)')
ylabel('exp')
# turn off the 2nd axes rectangle with frameon kwarg
ax2 = twinx()
s2 = sin(2*pi*t)
plot(t, s2, 'r.')
ylabel('sin')
ax2.yaxis.tick_right()
ax2.set_ylim(ymin=-3)
show()
Hi,
this example does not work for me: Right axis is in the range [-1, 1].
(The same as the example two_axes.py with an additional set_ylim in my
previous mail. Sorry for the sparse information.)
matplotlib.__version__ == 0.82
python 2.4
Thanks,
wr
···
Am Freitag, 20. Oktober 2006 17:31 schrieb John Hunter:
from pylab import *
ax1 = subplot(111)
t = arange(0.01, 10.0, 0.01)
s1 = exp(t)
plot(t, s1, 'b-')
xlabel('time (s)')
ylabel('exp')
# turn off the 2nd axes rectangle with frameon kwarg
ax2 = twinx()
s2 = sin(2*pi*t)
plot(t, s2, 'r.')
ylabel('sin')
ax2.yaxis.tick_right()
ax2.set_ylim(ymin=-3)
show()
Thanks. Unfortunately, I've not yet found a more recent ubuntu/dapper repo for
matplotlib. Any experience with installing the ubuntu edgy version (0.87) on
dapper?
Thanks,
wr
···
Am Samstag, 21. Oktober 2006 20:30 schrieb Eric Firing:
>
> matplotlib.__version__ == 0.82
There is the problem: you need to update your matplotlib.
Eric
Hi,
unfortunately, debs.astraw.com is not accessible.
wr@[ikarus]:~> ping debs.astraw.com
ping: unknown host debs.astraw.com
wr@[ikarus]:~> ping www.astraw.com
PING www.astraw.com (66.33.203.253) 56(84) bytes of data.
64 bytes from basic-emu.glass.dreamhost.com (66.33.203.253): icmp_seq=1 ttl=41
time=169 ms
···
Am Montag, 23. Oktober 2006 13:18 schrieb Sven Schreiber:
Willi Richert schrieb:
> Am Samstag, 21. Oktober 2006 20:30 schrieb Eric Firing:
>>> matplotlib.__version__ == 0.82
>>
>> There is the problem: you need to update your matplotlib.
>>
>> Eric
>
> Thanks. Unfortunately, I've not yet found a more recent ubuntu/dapper
> repo for matplotlib. Any experience with installing the ubuntu edgy
> version (0.87) on dapper?
check out the ubuntu (dapper) section at
http://new.scipy.org/Installing_SciPy/Linux, that repository (by Andrew
Straw) also gives you recent matplotlib packages.
-sven
With Linux it is easy to install matplotlib from the tarball or from svn--no need to hunt around for a package.
Eric
Willi Richert wrote:
···
Am Samstag, 21. Oktober 2006 20:30 schrieb Eric Firing:
matplotlib.__version__ == 0.82
There is the problem: you need to update your matplotlib.
Eric
Thanks. Unfortunately, I've not yet found a more recent ubuntu/dapper repo for matplotlib. Any experience with installing the ubuntu edgy version (0.87) on dapper?
Thanks,
wr
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Hi,
even with the newest version the problem remains, unless I put the set_ylim()
command _after_ plot(). Why?
···
Am Samstag, 21. Oktober 2006 20:30 schrieb Eric Firing:
Willi Richert wrote:
> Am Freitag, 20. Oktober 2006 17:31 schrieb John Hunter:
>> from pylab import *
>>
>> ax1 = subplot(111)
>> t = arange(0.01, 10.0, 0.01)
>> s1 = exp(t)
>> plot(t, s1, 'b-')
>> xlabel('time (s)')
>> ylabel('exp')
>>
>>
>> # turn off the 2nd axes rectangle with frameon kwarg
>> ax2 = twinx()
>> s2 = sin(2*pi*t)
>> plot(t, s2, 'r.')
>> ylabel('sin')
>> ax2.yaxis.tick_right()
>> ax2.set_ylim(ymin=-3)
>> show()
>
> Hi,
>
> this example does not work for me: Right axis is in the range [-1, 1].
> (The same as the example two_axes.py with an additional set_ylim in my
> previous mail. Sorry for the sparse information.)
>
> matplotlib.__version__ == 0.82
There is the problem: you need to update your matplotlib.
Eric
wr