________________________________
From: Benjamin Root <ben.r...@ou.edu>
To: Michael Rawlins <rawlin...@yahoo.com>
Cc: "matplotlib-users@lists.sourceforge.net"
<matplotlib-users@lists.sourceforge.net>
Sent: Thursday, January 19, 2012 10:07 AM
Subject: Re: [Matplotlib-users] placing colorbar when using subplot command
On Thursday, January 19, 2012, Michael Rawlins <rawlin...@yahoo.com> wrote:
>
>
> ________________________________
> From: Michael Rawlins <rawlin...@yahoo.com>
> To: Benjamin Root <ben.r...@ou.edu>
> Cc: "matplotlib-users@lists.sourceforge.net"
> <matplotlib-users@lists.sourceforge.net>
> Sent: Wednesday, January 18, 2012 10:13 AM
> Subject: Re: [Matplotlib-users] placing colorbar when using subplot command
>
>
>
> ________________________________
> From: Benjamin Root <ben.r...@ou.edu>
> To: Michael Rawlins <rawlin...@yahoo.com>
> Cc: "matplotlib-users@lists.sourceforge.net"
> <matplotlib-users@lists.sourceforge.net>
> Sent: Tuesday, January 17, 2012 2:02 PM
> Subject: Re: [Matplotlib-users] placing colorbar when using subplot command
>
>
> On Tue, Jan 17, 2012 at 12:37 PM, Michael Rawlins <rawlin...@yahoo.com> wrote:
>
>
> ________________________________
> From: Benjamin Root <ben.r...@ou.edu>
> To: Michael Rawlins <rawlin...@yahoo.com>
> Cc: "matplotlib-users@lists.sourceforge.net"
> <matplotlib-users@lists.sourceforge.net>
> Sent: Tuesday, January 17, 2012 10:36 AM
> Subject: Re: [Matplotlib-users] placing colorbar when using subplot command
>
>
> On Tue, Jan 17, 2012 at 9:30 AM, Michael Rawlins <rawlin...@yahoo.com> wrote:
>
> I'm relatively new to matplotlib. Trying to place a colorbar in a figure. The
> code below, placed in a file and executed with python, draws 4 maps using
> basemap. I've been unable to get a colorbar to show up anywhere on the
> figure. Ideally I would like the option of placing a colorbar across the
> bottom, spanning across both bottom map panels. Also would need the option
> of placing a colorbar either to the right of or below each map. Uncommenting
> the two lines under "Here make a colorbar" cause an error. I've used those
> commands when creating just one map using the figure command.
> TIA,
> Mike
>
>
> Mike,
>
> Try using the axes_grid1 toolkit to produce your axes objects and to allocate
> enough room for colorbars.
>
> http://matplotlib.sourceforge.net/mpl_toolkits/axes_grid/index.html
>
> Cheers!
> Ben Root
>
> P.S. - a little history, there used to be an axes_grid toolkit, but has since
> been superseded by axes_grid1.
>
>
> Clicking on source code on that page produces an error. For several of the
> graphic on that page, dropping the code into a file and running also produces
> various errors. Being new to this software, having a specific example that I
> can run and then incorporate into my code would be a big help.
>
> Mike
>
>
>
> Mike,
>
> I do apologize for that. We will have to get that fixed on the website (not
> sure why it is happening). I have attached an example file for you to try.
> Also, which version of matplotlib are you running? Without the error message
> you are getting, it would be hard to tell you what is wrong (most likely it
> is a version issue).
>
> Ben Root
>
>
>
> Version 0.99.1.1 installed through Synaptic package manager on system running
> Ubuntu 10.04. I'd rather not attempt a fresh install from sources just yet.
> Adding a colorbar alonside each map panel is possible. Anyone able to modify
> that code to make that work? I'm assuming it very simple for an experienced
> user. Also, is it possible to add axes_grid1.py to my directory? If I want
> to get fancy in the future I will install version 1 and use axes_grid1.py.
>
> Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56)
> [GCC 4.4.3] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import matplotlib
>>>> matplotlib.__version__
> '0.99.1.1'
>>>>
>
>
>
>
> Forum:
>
> Still unable to get a colorbar alongside the panels in this simple example.
> One last request for assistance. Thanks.
>
> Mike
>
> import sys,getopt
> from mpl_toolkits.basemap import Basemap, shiftgrid, cm
> #from netCDF3 import Dataset as NetCDFFile
> from mpl_toolkits.basemap import NetCDFFile
> from pylab import *
> import matplotlib.pyplot as plt
>
> cmap = cm.get_cmap('jet', 10) # 10 discrete colors
>
> m = Basemap(llcrnrlon=-80.6,llcrnrlat=38.4,urcrnrlon=-66.0,urcrnrlat=47.7,\
> resolution='l',area_thresh=1000.,projection='lcc',\
> lat_1=65.,lon_0=-73.3)
> xtxt=200000. #offset for text
> ytxt=200000.
> parallels = arange(38.,48.,2.)
> meridians = arange(-80.,-64.,2.)
>
> xsize = rcParams['figure.figsize'][0]
> fig=figure(figsize=(xsize,m.aspect*xsize))
>
> ############################################################################################
> subplots_adjust(left=None, bottom=None, right=None, top=None, wspace=0.15,
> hspace=0.11)
> # Make the first map
> plt.subplot(1,2,1)
>
> # draw coastlines and political boundaries.
> m.drawcoastlines()
> m.drawcountries()
> m.drawstates()
>
> # Here make a colorbar.
> cax = axes([0.88, 0.1, 0.06, 0.81]) # colorbar axes for map w/ graticule
> #colorbar(format='%3.1f', ticks=[-1.5, -1.2, -0.9, -0.6, -0.3, 0.0, 0.3, 0.6,
> 0.9, 1.2, 1.5], cax=cax)
> #colorbar(cax=cax)
>
> # Make the second map
> #########################################################################
> plt.subplot(1,2,2)
> # draw coastlines and political boundaries.
> m.drawcoastlines()
> m.drawcountries()
> m.drawstates()
>
> plt.show()
> plt.savefig("map.eps")
> plt.clf() # Clears the figure object
>
>
>
>
>
>
>
>
>
>
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>
I recommend upgrading to v1.1.0. There are some PPAs out there that has a more
recent version of mpl available as a package. Or you can install from source.
Instructions for doing that is in the FAQ.
Ben Root
Have no experience with PPAs and couldn't find a package. Installing from
sources. Following instructions here:
http://matplotlib.sourceforge.net/faq/installing_faq.html#installation
I removed matplotlib 0.99.1.1 and numpy 1.3.0 using Synaptic. Issued command:
sudo apt-get build-dep python-matplotlibto get dependencies. But the setup
command return the below to standard output immediately. numpy 1.4 or later is
required. How do I install that dependency?
> python setup.py install
basedirlist is: ['/usr/local', '/usr']
============================================================================
BUILDING MATPLOTLIB
matplotlib: 1.2.x
python: 2.6.5 (r265:79063, Apr 16 2010, 13:09:56) [GCC
4.4.3]
platform: linux2
REQUIRED DEPENDENCIES
* numpy 1.4 or later is required; you have 1.3.0------------------------------------------------------------------------------
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