[yt-users] yet another plot problem!

[Britton Smith]

Hi Kathy,

It looks like the problem is that "plots" is a list, but the call to
colorbar is expecting an actual plot object.  I think you can fix this by
changing plots to plots[0], as in:
cbar = fig.colorbar(plots[0],cax=cax, orientation=orient)

Britton


On Mon, Feb 3, 2014 at 4:01 PM, Kathy Eastwood <kathy.eastwood at nau.edu>wrote:

> Dear yt folks....
>
> This is probably a straightup matplotlib question and not a yt question,
> but....it was working until I got to the colorbar, and I am now confused.
> Thanks for any help...
> kathy
>
> here is the code:
>
> from yt.imods import *
> import matplotlib as mpl
> import matplotlib.pyplot as plt
> #import matplotlib.colorbar as cb
> from matplotlib.colors import LogNorm
> #import numpy as np
>
> ts = TimeSeriesData.from_filenames("Strat_Box_hdf5_plt_cnt_01*")
>
> padding = 0.05
> nx = 5 #number of time series images, plus will need space for vertical
> colorbar
> ny = 1 #might want to change this later!
> #Assuming that all images are the same shape and size
>
> width = nx +1 #I think this is inches, not sure
> height = 4
> fig = plt.figure(figsize=(width,height),frameon=False)
>
> #Trying to save 0.91 to 0.95 horizontally for the colorbar
> sizex = 0.85/nx
> sizey = 0.90/ny
>
> haxes = []
>
> for j in range(ny):
>     haxes.append([])
>     for i in range(nx):
>         left = padding + i*sizex
>         bottom = padding + j*sizey
>         ax = fig.add_axes([left, bottom, sizex, sizey],frameon=False)
>         ax.xaxis.set_visible(False)
>         ax.yaxis.set_visible(False)
>         haxes[-1].append(ax)
>
> cax = fig.add_axes([0.9, 0.05, 0.04, sizey],frameon=False)
> cax.xaxis.set_visible(False)
> cax.yaxis.set_visible(False)
>
> for i, pf in enumerate(ts):
>     sl = pf.h.slice(0,
> pf.domain_center[0],fields=["Density","Temperature"] )
>     frb = sl.to_frb( (1.0, 'kpc'), (4096,1024),height=(4.0, 'kpc'))
>     dens_axes = [haxes[0][i]]
>     plots = [dens_axes[0].imshow(frb["Density"], origin='lower',
> norm=LogNorm())]
>
> title=[r'$\mathrm{Density}\ (\mathrm{g\ cm^{-3}})$']
> orient = 'vertical'
>
> cbar = fig.colorbar(plots,cax=cax, orientation=orient)
> cbar.set_label(title)
> fig.savefig('ts_test')
>
> Here are the errors:
>
> --------------------------------------------------------------------------AttributeError                            Traceback (most recent call last)<ipython-input-7-e0dcab3d98fe> in <module>()      2 orient = 'vertical'      3 ----> 4 cbar = fig.colorbar(plots,cax=cax, orientation=orient)      5 cbar.set_label(title)      6
> /Users/kde/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.3.0-py2.7-macosx-10.4-x86_64.egg/matplotlib/figure.pyc in colorbar(self, mappable, cax, ax, use_gridspec, **kw)   1449                 cax, kw = cbar.make_axes(ax, **kw)   1450         cax.hold(True)-> 1451         cb = cbar.colorbar_factory(cax, mappable, **kw)   1452    1453         self.sca(current_ax)
> /Users/kde/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.3.0-py2.7-macosx-10.4-x86_64.egg/matplotlib/colorbar.pyc in colorbar_factory(cax, mappable, **kwargs)   1272         cb = ColorbarPatch(cax, mappable, **kwargs)   1273     else:-> 1274         cb = Colorbar(cax, mappable, **kwargs)   1275    1276     mappable.callbacksSM.connect('changed', cb.on_mappable_changed)
> /Users/kde/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.3.0-py2.7-macosx-10.4-x86_64.egg/matplotlib/colorbar.pyc in __init__(self, ax, mappable, **kw)    850         # Ensure the given mappable's norm has appropriate vmin and vmax set    851         # even if mappable.draw has not yet been called.--> 852         mappable.autoscale_None()    853     854         self.mappable = mappable
> AttributeError: 'list' object has no attribute 'autoscale_None'
>
>
>
> --
> Kathy DeGioia Eastwood, Ph.D.
> Professor of Physics and Astronomy
> Northern Arizona University
> Flagstaff, AZ 86011-6010
> Ph: 928-523-7159   FX: 928-523-1371
> Kathy.Eastwood at nau.edu
> deliveries: 602 S. Humphreys St., Bldg 19 Rm 2
>
> _______________________________________________
> yt-users mailing list
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>
>
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