That doesn't seem to fix it. What I'm expecting is at the top, 28 should
correspond to the value -2. Instead it puts a 30 there.
Kurt
Date: Mon, 30 Sep 2013 16:20:50 -0700
Subject: Re: [Matplotlib-users] x axis non-uniform labeling (KURT PETERS)
From: pmhob...@gmail.com
To: petersk...@msn.com
CC: matplotlib-users@lists.sourceforge.net
On Mon, Sep 30, 2013 at 1:43 PM, KURT PETERS <petersk...@msn.com> wrote:
I'm including the code below to demonstrate the problem. The top should have
simtimedata (0 through 28) labeling the points. As you can see, MATPLOTLIB
just distributes those values evenly instead of assigning them properly.
Any ideas?
#!/usr/bin/env python
import numpy as np
from matplotlib import rc
import matplotlib.pyplot as plt
import matplotlib.mlab as mlab
import re
from matplotlib.ticker import EngFormatter
xdat=np.arange(1,11)
simtimedata = np.array([0, 1, 5, 9, 13, 18, 21, 24, 25, 28])
idatanp = np.array([-1,0, 1, 2, 3, 2, 1, 0, -1, -2])
print idatanp.shape
print simtimedata.shape
print xdat.shape
fig = plt.figure()
ax1 = fig.add_subplot(211)
ax1.plot(xdat,idatanp)
ax2 = fig.add_subplot(212)
#ax1.plot(x1, x1,'b--')
ax3 = ax2.twiny()
ax2.plot(xdat, idatanp.real,'k-o')
ax3.plot(simtimedata, idatanp,'k--',alpha=0)
ax2.set_title("time domain")
ax2.grid(True)
plt.show()
>
> I'm trying to find a glitch in an FPGA simulation. The data stored in a file
> is:
> (simulation time, y)
>
> In reality, if I plot that I get large gaps because the simulation time
> continues and data is only output periodically. In other words simulation
> time is not continuous. I'd like to view the data without the gaps, but with
> simulation time annotating the x-axis so I can determine where the glitch
> occurs.
> I've tried a variety of things:
> #ax1.plot(x1, x1,'b--')
> #ax3 = ax2.twiny()
> ax2.set_xticklabels(simtimedata, fontdict=None, minor=False, rotation = 45)
> ax2.plot( idatanp.real,'k--',idatanp.imag,'g.-')
> #ax2.plot(xdat, idatanp.real,'k--',xdat,idatanp.imag,'g.-')
> #ax3.plot(simtimedata, idatanp.real,'k--',alpha=0)
>
> but cannot get the axis to both show the data all together AND show where the
> glitch occurs. I thought the twiny might help to put another x axis up so I
> could plot the data first with the x axis incrementing based on when the data
> is read in, and then trying to place labels showing simulation time.
>
> Does anyone have any ideas how I could do this?
> Kurt
Kurt,
You need to show ax3's xticklabels somewhere. Like this:
import numpy as npfrom matplotlib import rcimport matplotlib.pyplot as
pltimport matplotlib.mlab as mlabimport refrom matplotlib.ticker import
EngFormatter
xdat=np.arange(1,11)simtimedata = np.array([0, 1, 5, 9, 13, 18, 21, 24, 25,
28])idatanp = np.array([-1,0, 1, 2, 3, 2, 1, 0, -1, -2])
fig = plt.figure()
ax1 = fig.add_subplot(211)ax1.plot(xdat,idatanp)
ax2 = fig.add_subplot(212)ax3 = ax2.twiny()
ax2.plot(xdat, idatanp.real,'k-o')
ax3.plot(simtimedata, idatanp,'k--',alpha=0)
# ---- show ax3's xticklabels
ax3.xaxis.tick_top() ax2.set_title("time domain")ax2.grid(True)
fig.tight_layout()
------------------------------------------------------------------------------
October Webinars: Code for Performance
Free Intel webinars can help you accelerate application performance.
Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from
the latest Intel processors and coprocessors. See abstracts and register >
http://pubads.g.doubleclick.net/gampad/clk?id=60134791&iu=/4140/ostg.clktrk
_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users
