Re: [Matplotlib-users] logarithmic plotting and the grid
I think he wants to turn the grid on for both major and minor ticks. I'm interested in that also. Is there a way to do that? Lee Jae-Joon Lee lee.j.j...@gmail.com 02/10/2010 08:10 PM To K L klu1...@gmail.com cc matplotlib-users@lists.sourceforge.net Subject Re: [Matplotlib-users] logarithmic plotting and the grid Caterpillar: Confidential Green Retain Until: 03/12/2010 grid takes an optional argument which. Unfortunately this is not properly documented with pylab.grid and Axes.grid. But see http://matplotlib.sourceforge.net/api/axis_api.html?highlight=grid#matplotlib.axis.Axis.grid grid(True) # this turns on gridlines for major ticks grid(True, which=minor) # this turns on gridlines for minor ticks. -JJ On Wed, Feb 10, 2010 at 6:18 PM, K L klu1...@gmail.com wrote: Hi, I want a more detailed grid for my logarithmic plotting. The following code: from pylab import * semilogy(range(10)) grid(True) show() will produce output like this: http://i49.tinypic.com/2dpd3r.png Notice that the grid uniformly slices the image. And some ticks on the y-axis doesn't have grid lines. This is not want I want. Conversely, something like this is preferred: http://www.mathworks.com/access/helpdesk/help/toolbox/comm/ug/bert_mat_explot1.gif Thanks! -- SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Runtime Error - Need Advice
Thanks for all your suggestions Christoph. Launching the Tk Python Shell
instead of PythonWin seems to work consistently - I get the correct plot
figure and the correct log_plot.png file created everytime I run the
script. I never did install Ipython, but I'll consider that for a future
upgrade.
Lee
Christoph Gohlke cgoh...@uci.edu
02/09/2010 04:35 PM
To
matplotlib-users matplotlib-users@lists.sourceforge.net
cc
Subject
Re: [Matplotlib-users] Runtime Error - Need Advice
Caterpillar: Confidential Green Retain Until: 03/11/2010
I can now reproduce this. It seems the same old problem that PythonWin
can not reliably run matplotlib because successive runs of the script
use the same interpreter. Ipython should work. Append pylab.close() to
your script; at least it will not crash on the second run.
-- Christoph
On 2/9/2010 10:44 AM, Lee Boger wrote:
Although, if I close the figure then re-run the script, a new figure
pops up but it doesn't have any data plotted. Interpreter is now locked
up. I'm still not fixing it completely. There is also no figure stored
as a file log_plot.
Lee
*Christoph Gohlke cgoh...@uci.edu*
02/09/2010 01:23 PM
To
Lee Boger boger_...@cat.com
cc
Subject
Re: [Matplotlib-users] Runtime Error - Need Advice
Caterpillar: Confidential GreenRetain Until: 03/11/2010
Change the last line to pylab.show() and it should work.
Anyway, this example should not crash the interpreter. I can reproduce
the crash on Python 2.4, 2.5, and 2.6 (32 and 64 bit) on Windows with
mpl 0.99.1 but not on Ubuntu 9.1 with mpl 0.99.0.
The shortest example that crashes is:
python -c import pylab;pylab.subplot(111).figure.show()
or on the interactive prompt:
import pylab
pylab.subplot(111).figure.show()
exit()
Fatal Python error: PyEval_RestoreThread: NULL tstate
This application has requested the Runtime to terminate it in an unusual
way.
Please contact the application's support team for more information.
-- Christoph
On 2/9/2010 7:57 AM, Lee Boger wrote:
Windows XP Professional with Python 2.5 installed (pywin32 build 210) -
came with dSPACE software package
Downloaded and installed matplotlib-0.99.1.win32-py2.5.exe from
sourceforge.net
Downloaded and installed numpy-1.4.0-win32-superpack-python2.5.exe from
sourceforge.net
Executing the following simple log plot script within PythonWin:
*from* matplotlib *import* pylab
# Create some artificial data.
test_frequency = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16,
17, 18, 19, 20]
test_results = [-0.2, -0.7, -1.0, -1.5, -2.0, -2.5, -3.0, -3.5, -4, -5,
-6, -7.1, -8, -9, -10, -11, -12, -15, -20, -25]
spec_frequency = [6, 8]
spec_results = [-3.0, -3.0]
# Plot
figure = pylab.subplot(111)
figure.semilogx()
figure.scatter(test_frequency, test_results, s=20, c='b', marker='s',
edgecolors='none')
figure.scatter(spec_frequency, spec_results, s=40, c='g', marker='s',
edgecolors='none')
figure.grid(True)
figure.set_xlabel(rFrequency (Hz), fontsize = 12)
figure.set_ylabel(rActuator Response (db), fontsize = 12)
figure.figure.savefig('log_plot')
figure.figure.show()
Plots a figure on the screen that looks correct, then the following
error (when I click OK, PythonWin closes)
Any advice would be appreciated. Maybe it's an installation or setup
issue, but I'm pretty knew to Python programming and don't know how to
debug this.
Lee Boger
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Re: [Matplotlib-users] Runtime Error - Need Advice
Thanks for your help. I'll look into ipython.
Lee
Eric Firing efir...@hawaii.edu
02/09/2010 02:31 PM
To
Lee Boger boger_...@cat.com, matplotlib-users
matplotlib-users@lists.sourceforge.net
cc
Subject
Re: [Matplotlib-users] Runtime Error - Need Advice
Caterpillar: Confidential Green Retain Until: 03/11/2010
Lee Boger wrote:
Thanks for the quick feedback. I changed the last line from
figure.figure.show() to pyplot.show() and it worked without crashing the
interpreter. However, if I close the figure then re-run the script, a
new figure pops up but it doesn't have any data plotted. Interpreter is
now locked up, the run-time error occurred and no figure stored as a
file log_plot. I un-installed numpy-1.4.0 and installed numpy-1.3.0, but
the results were as I just described.
Lee
At this point a Windows user may need to step in. I know nothing about
PythonWin. My suspicion is that this is a problem of dueling event
loops, and one solution would be to use ipython instead of pythonwin.
(Note that you typically need to use reply to all on this list,
otherwise the reply does not get copied to the list.)
Eric
*Eric Firing efir...@hawaii.edu*
02/09/2010 01:35 PM
To
Lee Boger boger_...@cat.com
cc
matplotlib-users@lists.sourceforge.net
Subject
Re: [Matplotlib-users] Runtime Error - Need Advice
Caterpillar: Confidential GreenRetain Until: 03/11/2010
Lee Boger wrote:
Windows XP Professional with Python 2.5 installed (pywin32 build 210)
-
came with dSPACE software package
Downloaded and installed matplotlib-0.99.1.win32-py2.5.exe from
sourceforge.net
Downloaded and installed numpy-1.4.0-win32-superpack-python2.5.exe
from
sourceforge.net
I suspect this is the problem: numpy-1.4.0 is considered broken and has
been withdrawn. Specifically, it introduces binary incompatibility with
programs compiled against prior versions of numpy, including matplotlib.
If you go back to the numpy sourceforge site now, I think you will see
an earlier version that you can install in place of 1.4.0 (after
removing the latter).
Eric
Executing the following simple log plot script within PythonWin:
*from* matplotlib *import* pylab
# Create some artificial data.
test_frequency = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16,
17, 18, 19, 20]
test_results = [-0.2, -0.7, -1.0, -1.5, -2.0, -2.5, -3.0, -3.5, -4,
-5,
-6, -7.1, -8, -9, -10, -11, -12, -15, -20, -25]
spec_frequency = [6, 8]
spec_results = [-3.0, -3.0]
# Plot
figure = pylab.subplot(111)
figure.semilogx()
figure.scatter(test_frequency, test_results, s=20, c='b', marker='s',
edgecolors='none')
figure.scatter(spec_frequency, spec_results, s=40, c='g', marker='s',
edgecolors='none')
figure.grid(True)
figure.set_xlabel(rFrequency (Hz), fontsize = 12)
figure.set_ylabel(rActuator Response (db), fontsize = 12)
figure.figure.savefig('log_plot')
figure.figure.show()
Plots a figure on the screen that looks correct, then the following
error (when I click OK, PythonWin closes)
Any advice would be appreciated. Maybe it's an installation or setup
issue, but I'm pretty knew to Python programming and don't know how
to
debug this.
Lee Boger
--
SOLARIS 10 is the OS for Data Centers - provides features such as DTrace,
Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW
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Re: [Matplotlib-users] Runtime Error - Need Advice
I tried something that seems to work consistently - I get the correct plot
figure and the correct log_plot.png file created everytime I run the
script.
From the Start menu, I chose All Programs-Python2.5-IDLE (Python GUI)
instead of All Programs-Python2.5-PythonWin, which creates the Tk Python
Shell. I then open the script file and run it. I think you were right.
Does this make sense?
Lee
__
Thanks for your help. I'll look into ipython.
Lee
Eric Firing efir...@hawaii.edu
02/09/2010 02:31 PM
To
Lee Boger boger_...@cat.com, matplotlib-users
matplotlib-users@lists.sourceforge.net
cc
Subject
Re: [Matplotlib-users] Runtime Error - Need Advice
Caterpillar: Confidential Green Retain Until: 03/11/2010
Lee Boger wrote:
Thanks for the quick feedback. I changed the last line from
figure.figure.show() to pyplot.show() and it worked without crashing the
interpreter. However, if I close the figure then re-run the script, a
new figure pops up but it doesn't have any data plotted. Interpreter is
now locked up, the run-time error occurred and no figure stored as a
file log_plot. I un-installed numpy-1.4.0 and installed numpy-1.3.0, but
the results were as I just described.
Lee
At this point a Windows user may need to step in. I know nothing about
PythonWin. My suspicion is that this is a problem of dueling event
loops, and one solution would be to use ipython instead of pythonwin.
(Note that you typically need to use reply to all on this list,
otherwise the reply does not get copied to the list.)
Eric
*Eric Firing efir...@hawaii.edu*
02/09/2010 01:35 PM
To
Lee Boger boger_...@cat.com
cc
matplotlib-users@lists.sourceforge.net
Subject
Re: [Matplotlib-users] Runtime Error - Need Advice
Caterpillar: Confidential GreenRetain Until: 03/11/2010
Lee Boger wrote:
Windows XP Professional with Python 2.5 installed (pywin32 build 210)
-
came with dSPACE software package
Downloaded and installed matplotlib-0.99.1.win32-py2.5.exe from
sourceforge.net
Downloaded and installed numpy-1.4.0-win32-superpack-python2.5.exe
from
sourceforge.net
I suspect this is the problem: numpy-1.4.0 is considered broken and has
been withdrawn. Specifically, it introduces binary incompatibility with
programs compiled against prior versions of numpy, including matplotlib.
If you go back to the numpy sourceforge site now, I think you will see
an earlier version that you can install in place of 1.4.0 (after
removing the latter).
Eric
Executing the following simple log plot script within PythonWin:
*from* matplotlib *import* pylab
# Create some artificial data.
test_frequency = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16,
17, 18, 19, 20]
test_results = [-0.2, -0.7, -1.0, -1.5, -2.0, -2.5, -3.0, -3.5, -4,
-5,
-6, -7.1, -8, -9, -10, -11, -12, -15, -20, -25]
spec_frequency = [6, 8]
spec_results = [-3.0, -3.0]
# Plot
figure = pylab.subplot(111)
figure.semilogx()
figure.scatter(test_frequency, test_results, s=20, c='b', marker='s',
edgecolors='none')
figure.scatter(spec_frequency, spec_results, s=40, c='g', marker='s',
edgecolors='none')
figure.grid(True)
figure.set_xlabel(rFrequency (Hz), fontsize = 12)
figure.set_ylabel(rActuator Response (db), fontsize = 12)
figure.figure.savefig('log_plot')
figure.figure.show()
Plots a figure on the screen that looks correct, then the following
error (when I click OK, PythonWin closes)
Any advice would be appreciated. Maybe it's an installation or setup
issue, but I'm pretty knew to Python programming and don't know how
to
debug this.
Lee Boger
--
SOLARIS 10 is the OS for Data Centers - provides features such as DTrace,
Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW
http://p.sf.net/sfu/solaris-dev2dev___
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
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Re: [Matplotlib-users] Runtime Error - Need Advice
Python version 2.5.1, Tk version 8.4, IDLE version 1.2.1
Lee
Christoph Gohlke cgoh...@uci.edu
02/09/2010 03:08 PM
To
matplotlib-users matplotlib-users@lists.sourceforge.net
cc
Subject
Re: [Matplotlib-users] Runtime Error - Need Advice
Caterpillar: Confidential Green Retain Until: 03/11/2010
I am not sure what's going on. The script you posted imports pylab in
the first line. It should be defined. The scrit works just fine after
the proposed changes, even from Pythonwin. Did you completely quit
Pythonwin after the crashes and made sure no corrupted python instance
was left running? Please send the version string of your python
installation.
Christoph
On 2/9/2010 11:10 AM, Lee Boger wrote:
Per another suggestion, I did uninstall numpy 1.4 and installed numpy
1.3, but got the same results. Using pylab.savefig('log_plot) resulted
in the following error:
Traceback (most recent call last):
File C:\Program Files\Common
Files\dSPACE\Python25\lib\site-packages\Pythonwin\pywin\framework\scriptutils.py,
line 310, in RunScript
exec codeObject in __main__.__dict__
File C:\Documents and Settings\BogerLC\My Documents\Script2.py, line
20, in module
pylab.savefig('log_plot')
NameError: name 'pylab' is not defined
Using pyplot.savefig('log_plot') does not have an error, but I still get
no file saved. Maybe it is a backend thing, which I know nothing
about. I'll look into it. Thanks.
Lee
*Christoph Gohlke cgoh...@uci.edu*
02/09/2010 02:03 PM
To
matplotlib-users matplotlib-users@lists.sourceforge.net
cc
Subject
Re: [Matplotlib-users] Runtime Error - Need Advice
Caterpillar: Confidential GreenRetain Until: 03/11/2010
Use pylab.savefig('log_plot'). Also saving the figure to file and
showing it interactively in the same script might involve switching
backends, which might not work as expected.
It is advisable to downgrade to numpy 1.3.
-- Christoph
On 2/9/2010 10:44 AM, Lee Boger wrote:
Although, if I close the figure then re-run the script, a new figure
pops up but it doesn't have any data plotted. Interpreter is now locked
up. I'm still not fixing it completely. There is also no figure stored
as a file log_plot.
Lee
*Christoph Gohlke cgoh...@uci.edu*
02/09/2010 01:23 PM
To
Lee Boger boger_...@cat.com
cc
Subject
Re: [Matplotlib-users] Runtime Error - Need Advice
Caterpillar: Confidential GreenRetain Until: 03/11/2010
Change the last line to pylab.show() and it should work.
Anyway, this example should not crash the interpreter. I can reproduce
the crash on Python 2.4, 2.5, and 2.6 (32 and 64 bit) on Windows with
mpl 0.99.1 but not on Ubuntu 9.1 with mpl 0.99.0.
The shortest example that crashes is:
python -c import pylab;pylab.subplot(111).figure.show()
or on the interactive prompt:
import pylab
pylab.subplot(111).figure.show()
exit()
Fatal Python error: PyEval_RestoreThread: NULL tstate
This application has requested the Runtime to terminate it in an
unusual
way.
Please contact the application's support team for more information.
-- Christoph
On 2/9/2010 7:57 AM, Lee Boger wrote:
Windows XP Professional with Python 2.5 installed (pywin32 build 210)
-
came with dSPACE software package
Downloaded and installed matplotlib-0.99.1.win32-py2.5.exe from
sourceforge.net
Downloaded and installed numpy-1.4.0-win32-superpack-python2.5.exe
from
sourceforge.net
Executing the following simple log plot script within PythonWin:
*from* matplotlib *import* pylab
# Create some artificial data.
test_frequency = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16,
17, 18, 19, 20]
test_results = [-0.2, -0.7, -1.0, -1.5, -2.0, -2.5, -3.0, -3.5, -4,
-5,
-6, -7.1, -8, -9, -10, -11, -12, -15, -20, -25]
spec_frequency = [6, 8]
spec_results = [-3.0, -3.0]
# Plot
figure = pylab.subplot(111)
figure.semilogx()
figure.scatter(test_frequency, test_results, s=20, c='b', marker='s',
edgecolors='none')
figure.scatter(spec_frequency, spec_results, s=40, c='g', marker='s',
edgecolors='none')
figure.grid(True)
figure.set_xlabel(rFrequency (Hz), fontsize = 12)
figure.set_ylabel(rActuator Response (db), fontsize = 12)
figure.figure.savefig('log_plot')
figure.figure.show()
Plots a figure on the screen that looks correct, then the following
error (when I click OK, PythonWin closes)
Any advice would be appreciated. Maybe it's an installation or setup
issue, but I'm pretty knew to Python programming and don't know how to
debug this.
Lee Boger
--
The Planet: dedicated and managed hosting, cloud storage, colocation
Stay online with enterprise data centers and the best network in the
business
Choose flexible plans and management services without long-term
contracts
Personal 24x7 support from
