Re: [matplotlib-devel] [PATCH] experimental numscons support in matplotlib
Andrew Straw wrote: Michael Droettboom wrote: I know it's been a while since you announced this, but I'm just looking into this now. Also, I got some ways in making the buildbot build with numscons, but I stopped at a bug where it looked like the matplotlib.tests.* modules were not getting installed: http://mpl-buildbot.code.astraw.com/builders/Ubuntu%208.04%2C%20Python%202.5%2C%20amd64%2C%20scons/builds/13/steps/test/logs/stdio I will look at it. I would like to get some kind of automated testing for matplotlib on windows 64 (which is built using the numscons build), so I have the incentive :) I haven't had a chance to debug this further, but I'm open to ideas. Also, this branch is building from a git repository (a mirror of David's which I can't clone normally, for some reason), for what it's worth. I don't know why I have those problems either. Do you think it would be possible to just apply the patch suite to trunk in svn once we fix the test issue ? Since the patches do not touch the existing source tree (except for a few bugs on windows I can split up if required), it would be more practical to have all this in svn. cheers, David -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
Re: [matplotlib-devel] Engineering prefixed units in tick labels
Hi,
2009/11/18 Jason Heeris jason.hee...@gmail.com:
In gnuplot, I can do the following:
set format x %.0s %cHz
...and this will set the x-axis labels (on a semilogx style plot) to
be 10 Hz, 100 Hz, 1 kHz, 10 kHz, etc.
I ended up implementing this myself, it wasn't too hard. I've attached
the code if anyone else is interested. I don't know matplotlib that
well, so I don't know if there's much duplication of code in there.
I thought I'd CC the dev list in case others think it might be useful.
If not, sorry for the noise.
Cheers,
Jason
import math, decimal
from matplotlib.ticker import LogFormatter
# The SI engineering prefixes
ENG_PREFIXES = {
-24: y,
-21: z,
-18: a,
-15: f,
-12: p,
-9: n,
-6: u\u03BC, # Greek letter mu
-3: m,
0: ,
3: k,
6: M,
9: G,
12: T,
15: P,
18: E,
21: Z,
24: Y
}
def format_eng(num, places=0):
Formats a number in engineering notation, appending a letter
representing the power of 1000 of the original number. Some examples:
format_eng(0, 0)
'0'
format_eng(100, 1)
'1.0 M'
format_eng(-1e-6, 2)
u'-1.00 \u03bc'
@param num: the value to represent
@type num: either a numeric value or a string that can be converted to a
numeric value (as per decimal.Decimal constructor)
@param prec: the number of decimal places to include (default 0)
@type prec: integer 0
@return: engineering formatted string
dnum = decimal.Decimal(str(num))
sign = 1
if dnum 0:
sign = -1
dnum = -dnum
if dnum != 0:
pow10 = decimal.Decimal(int(math.floor(dnum.log10()/3)*3))
else:
pow10 = decimal.Decimal(0)
pow10 = pow10.min(max(ENG_PREFIXES.keys()))
pow10 = pow10.max(min(ENG_PREFIXES.keys()))
prefix = ENG_PREFIXES[int(pow10)]
mant = sign*dnum/(10**pow10)
format_str = %f %s
if places 0:
format_str = (%%.%if %%s % places)
else:
format_str = %i %s
formatted = format_str % (mant, prefix)
return formatted.strip()
class EngFormatter(LogFormatter):
Formats axis values using engineering prefixes to represent powers of 1000,
plus a specified unit, eg. 10 MHz instead of 1e7.
def __init__(self, unit=):
LogFormatter.__init__(self, base=10)
self.unit = unit
def __call__(self, x, pos=None):
# only label the decades
b=self._base
fx = math.log(abs(x))/math.log(b)
isDecade = self.is_decade(fx)
if not isDecade and self.labelOnlyBase:
s = ''
else:
s = %s%s % (format_eng(x, 0), self.units)
return self.fix_minus(s)
--
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Re: [matplotlib-devel] [PATCH] experimental numscons support in matplotlib
David Cournapeau wrote: Andrew Straw wrote: Michael Droettboom wrote: I know it's been a while since you announced this, but I'm just looking into this now. Also, I got some ways in making the buildbot build with numscons, but I stopped at a bug where it looked like the matplotlib.tests.* modules were not getting installed: http://mpl-buildbot.code.astraw.com/builders/Ubuntu%208.04%2C%20Python%202.5%2C%20amd64%2C%20scons/builds/13/steps/test/logs/stdio I will look at it. I would like to get some kind of automated testing for matplotlib on windows 64 (which is built using the numscons build), so I have the incentive :) I looked a little further, and it depends on the directory that the tests are run from -- if I manually log into the build slave, I can get the tests to run (in fact, one segfaults) if I try from a different working directory. Anyhow, now that I have a handle on it, I think I can probably get it working... Give me a couple days. win64 builds wold be great. I haven't had a chance to debug this further, but I'm open to ideas. Also, this branch is building from a git repository (a mirror of David's which I can't clone normally, for some reason), for what it's worth. I don't know why I have those problems either. Do you think it would be possible to just apply the patch suite to trunk in svn once we fix the test issue ? Since the patches do not touch the existing source tree (except for a few bugs on windows I can split up if required), it would be more practical to have all this in svn. As far as I'm concerned, that would be fine. Is PyMODINIT_FUNC pulled in from Python.h? Also, would you like svn commit access? That may just make things easier -- John, what do you think? I think we can trust David. :) -Andrew -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
Re: [matplotlib-devel] [PATCH] experimental numscons support in matplotlib
On Wed, Nov 25, 2009 at 10:52 AM, Andrew Straw straw...@astraw.com wrote: Also, would you like svn commit access? That may just make things easier -- John, what do you think? I think we can trust David. :) Absolutely -- send me an svn login and I can add him to the list of committers if he wants to, else we can manage his patches. JDH -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
Re: [matplotlib-devel] [PATCH] experimental numscons support in matplotlib
On Wed, Nov 25, 2009 at 10:57 AM, John Hunter jdh2...@gmail.com wrote: On Wed, Nov 25, 2009 at 10:52 AM, Andrew Straw straw...@astraw.com wrote: Also, would you like svn commit access? That may just make things easier -- John, what do you think? I think we can trust David. :) Absolutely -- send me an svn login and I can add him to the list of committers if he wants to, else we can manage his patches. svn login means sourceforge id JDH -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
