s kemp <6b656...@gmail.com> writes:
> The output i get from this code is two identical pages of PDF where
> the x limits are set to 3,5. I understand this is because I am simply
> making two identical references to the figure object in the list and
> by modifying fig1 i also affect the fig1 that is 'stored' in the first
> position of the array. My question is how do I avoid this?
My recommendation is to construct multiple figure objects. Factor the
shared code into a function so it is easier to modify just what you want
to be different between the figures:
------------------------------------------------------------------------
import matplotlib.figure as fig
from matplotlib.backends.backend_pdf import PdfPages, FigureCanvasPdf
def plot_data(xdata, ydata):
"""Returns pair of figure and axis"""
f = fig.Figure(figsize=(2,2))
ax = f.add_subplot(111)
ax.plot(xdata, ydata)
return f, ax
xdata = [1,2,3,4,5]
ydata = [5,4,3,2,1]
fig1, ax1 = plot_data(xdata, ydata)
fig2, ax2 = plot_data(xdata, ydata)
figures = []
ax1.set_xlim([0,3])
figures.append(fig1)
ax2.set_xlim([3,5])
figures.append(fig2)
pdf = PdfPages('output.pdf')
for figure in figures:
canvas = FigureCanvasPdf(figure)
figure.savefig(pdf, format="pdf")
pdf.close()
------------------------------------------------------------------------
--
Jouni K. Seppänen
http://www.iki.fi/jks
------------------------------------------------------------------------------
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