matplotlib-users Mailing List for matplotlib

Hello All,
  I am trying to produce a 2D density plot of a distribution and would
like to show the associated projection computed as histogram. I need
to perform an operation on the histogram to offset them.
  Right now I am doing this:

# plot my 2D distribution
   hexbin(x,y, cmap=cm.jet, bins='log',gridsize=151)
# compute the associated projection (I would like not to show them but
use the hist to get the histrgram data)
   ny, binsy, histoy = hist(y, bins=121, normed=1, histtype='step',
color='white')
   nx, binsx, histox = hist(x, bins=121, normed=1, histtype='step',
orientation='horizontal', color='white', alpha=0.0)
# manipulate the histogram data
   Nbinsx = binsx[:-1]
   Nbinsy = binsy[:-1]
# plot offset histogram
   plot (Nbinsx,nx-2.5,color='white')
   plot (ny-2.5, Nbinsy,color='white')

  I have two questions (my apology I am a novice with matplotlib):

1/  When executing the above script, I also display the histograms
generated when invoking "hist" (I tried to make this line tranparaent
by using alpha=0 but it did not work).
2/ can I directly manipulate the data within an histogram to
arbitrarily offset the histogram?

  Thank you for any suggestion. Best,  -- Philippe.

Hi,


mdekauwe wrote:
> 
> Has anyone ever managed to draw a taylor diagram in Matplotlib? For
> example like this
> 
> http://www.mathworks.com/matlabcentral/fx_files/20559/2/taylordiag_fig.jpg
> 

here is my try [ http://old.nabble.com/file/p30540085/taylorDiagram.py
taylorDiagram.py ] using matplotlib 1.0 (requires floating_axes).  This is
heavily based on the 
http://matplotlib.sourceforge.net/examples/axes_grid/demo_floating_axes.html
floating_axes demo  (which I find tricky).

I'm sure there're plenty of way to improve the TaylorDiagram class, but I'm
not familiar with all the bells and whistles of axes projections
(furthermore, I'm not sure Taylor diagrams are exactly what I need...). So
feel free to ellaborate!

Cheers,

Yannick


-- 
View this message in context: http://old.nabble.com/Taylor-diagram-tp30421393p30540085.html
Sent from the matplotlib - users mailing list archive at Nabble.com.

Is it possible to have autoscale for the yaxis use only the current xlim
rather than the whole series that was plotted?

For example, if I have a 2 year time-series with current xlim set to only
show a 1 year span, how can I get matplotlib to base the autoscale for the
y-axis on the 1 year span and not the full 2 year span?

For a dynamic plot where the user can shift the xlims it would be very nice
to do this directly in matplotlib rather than having to use logic/data
outside of matplotlib.