I would like to draw a standard 2D line graph with pylot, but force the axes' values to be between 0 and 600 on the x, and 10k and 20k on the y. Let me go with an example...
import pylab as p p.title(save_file) p.axis([0.0,600.0,1000000.0,2000000.0]) #define keys and items elsewhere.. p.plot(keys,items) p.savefig(save_file, dpi=100)
However, the axes still adjust to the size of the data. I'm interpreting the effect of p.axis to be setting what the max and min could be, not enforcing them to be the max or min. The same happens when I try to use p.xlim() etc.
Any thoughts?
Thanks.
MatPlotLib with Python To change the range of X and Y axes, we can use xlim() and ylim() methods.
To set the lower axis limit, we use xlim() and ylim() function and pass the left and bottom parameter respectively. To plot the graph, use plot() function. To set the labels at the axes, use xlabel() and ylabel() function. To display the graph, use show() function.
Calling p.plot
after setting the limits is why it is rescaling. You are correct in that turning autoscaling off will get the right answer, but so will calling xlim()
or ylim()
after your plot
command.
I use this quite a lot to invert the x axis, I work in astronomy and we use a magnitude system which is backwards (ie. brighter stars have a smaller magnitude) so I usually swap the limits with
lims = xlim() xlim([lims[1], lims[0]])
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With