Hi, P.Romero,
Please let me know if you get this working. I am trying to do the same type of 2 axes bar chart. but I got error message.
I am using regular bar ().
the following is the email i sent a week ago. Eric, I did use the twinx(), but it gave errors.
thanks in advance.
Hi, everyone,
I am a matplotlib beginner. I am trying to do a chart with 2 y axes using twinx()
I
keep getting error message “malformed header from script. Bad
header= is masked in one or more l: test.cgi” when I do two bar
charts on two axes. if I do one bar chart and one line chart, I
wouldnt get the error.
if I refresh the web page, the chart would show up.
the following is my code.
...
ax = self.fig.add_axes( self.rectMain, axisbg=self.axesBG)
ticks = self.setTickInterval( 10, 0, buybackDataobj.sharesMax)
ind = na.array(range(len(
buybackDataobj.quarters)))
majorFormatter = FormatStrFormatter(‘%2.1f’)
ax.yaxis.set_major_locator(MultipleLocator( ticks ) )
ax.yaxis.set_major_formatter(majorFormatter)
bar(ind, buybackDataobj.shares, self.barwidth, color=self.draw.color['DarkGreen'] )
t = arange(0, float(buybackDataobj.sharesMax), ticks )
ax.set_ylim(0, buybackDataobj.sharesMax * 1.1)
ax.set_xlim(0, ind[-1] + self.barwidth*2)
ax.set_ylabel("Value Bought " + buybackDataobj.scale, fontsize = self.fontsize )
ax.set_xticks(ind + self.barwidth)
ax.set_xticklabels( buybackDataobj.quarters, fontsize = self.fontsize)
setp( ax.get_xticklabels(), rotation = self.rotation, horizontalalignment='center', family=
‘sans-serif’, fontsize = self.xaxisfs )
if buybackDataobj.charttype == 'sells':
ax2 = twinx()
#ax2.plot(ind +
self.barwidth/2, buybackDataobj.sells, ls=‘-’, marker =‘.’, ms=11,
c=‘#FF3300’) // I wouldnt get the error message if I do this
plot
bar(ind + self.barwidth, buybackDataobj.sells,
self.barwidth, color=‘#FF3300’ ) // malformed header from script. Bad
header= is masked in one or more l: test.cgi
ax2.set_xticklabels(buybackDataobj.quarters, visible=False )
ax2.set_ylim(buybackDataobj.sellsMin * 0.75, buybackDataobj.sellsMax * 1.1)
ax2.set_ylabel(“Insider Selling $” + buybackDataobj.sellsScale,
verticalalignment=‘center’, fontsize = self.fontsize)
setp( ax2.get_yticklabels(), rotation = 0,
horizontalalignment=‘left’, family=‘sans-serif’, fontsize=self.fontsize
)
…
···
On Mon, Apr 6, 2009 at 3:44 PM, Eric Firing <efiring@…202…> wrote:
P.Romero wrote:
Is it possible to create a colorbar with different scales on each side?
Example:
a temperature colorbar with celcius values on the left side and
farenheit values on the right side.
If so, how could this be done?
A colorbar is just an axes object with some customization of the ticks
and labels, and with a pcolor plot inside. You could get your second
scale using a technique similar to the twinx and twiny Axes methods; you
can then use set_xlim or set_ylim so that the Fahrenheit range on the
new axes matches the Celcius range on the old one.
To get started, look at the source for the twinx/twiny methods.
Eric
Please help,
Thanks,
P.Romero
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