Hello,
I have y values in the range of -100 to 100.
I want that the negative values are shown as positive (the minus gets removed
from the output).
I tried a for loop over all self.ax.get_yticklabels() and call
label.set_text("...") on each item but it didn't work - nothing got changed.
If I print the label in the loop they seem to be empty:
Text(0,0,'')
Text(0,0,'')
Text(0,0,'')
......
Is there anything I do wrong?
Thanks,
Lukas
Use pylab's yticks command.
http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.yticks
Or Axes.set_yticklabels together with Axes.set_yticks.
http://matplotlib.sourceforge.net/api/axes_api.html#matplotlib.axes.Axes.set_yticklabels
-JJ
On Fri, Jul 31, 2009 at 4:07 PM, Lukas Hetzenecker<LuHe@...1843...> wrote:
Hello,
I have y values in the range of -100 to 100.
I want that the negative values are shown as positive (the minus gets removed
from the output).I tried a for loop over all self.ax.get_yticklabels() and call
label.set_text("...") on each item but it didn't work - nothing got changed.If I print the label in the loop they seem to be empty:
Text(0,0,'')
Text(0,0,'')
Text(0,0,'')
......Is there anything I do wrong?
Thanks,
Lukas------------------------------------------------------------------------------
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Jae-Joon Lee wrote:
Use pylab's yticks command.
http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.yticks
Or Axes.set_yticklabels together with Axes.set_yticks.
http://matplotlib.sourceforge.net/api/axes_api.html#matplotlib.axes.Axes.set_yticklabels
-JJ
Or a make a very simple custom Formatter:
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.ticker import ScalarFormatter
class PositiveFormatter(ScalarFormatter):
def pprint_val(self, x):
return ScalarFormatter.pprint_val(self, np.abs(x))
x = np.arange(0,20,0.1)
y = 100 * np.sin(x)
plt.plot(x, y)
ax = plt.gca()
ax.yaxis.set_major_formatter(PositiveFormatter())
plt.show()
This is a much safer way to handle it than trying to modify tick labels directly.
Eric
On Fri, Jul 31, 2009 at 4:07 PM, Lukas Hetzenecker<LuHe@...1843...> wrote:
Hello,
I have y values in the range of -100 to 100.
I want that the negative values are shown as positive (the minus gets removed
from the output).I tried a for loop over all self.ax.get_yticklabels() and call
label.set_text("...") on each item but it didn't work - nothing got changed.If I print the label in the loop they seem to be empty:
Text(0,0,'')
......Is there anything I do wrong?
Thanks,
Lukas------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
matplotlib-users List Signup and Options------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
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