matplotlib-users Mailing List for matplotlib

If you are using the gd or paint backends, please speak up *now*, and 
tell me what the advantage is over the myriad other ways of generating 
png files with mpl. I would like to delete these backends *soon* unless 
there is some real advantage in keeping them.
Thanks.
Eric

Robert Dailey wrote:
> 1) Is there any way to represent vectors? Currently I'm using 'array'
> for vectors.
There is no explicit 'vector' representation. You may view vectors as
either column or row vectors and represent them as 1xN or Nx1 matrices.
In that case, the linear algebra like matrix products etc. can be used
rather elegantly. Otherwise, you just use 1D-arrays and take care of the
vector semantics yourself.
> 2) Is there a way to calculate the magnitude (length) of a vector?
numpy.linalg.norm(X)
(works for vectors as well as matrices)

Hi ,
I am plotting some date based data (dates/values).
Seems to work ok. The code snippet is below.
But what I am trying to do is set the font size of the (%b)
month labels (Jan,Feb etc) as they are too big for my small graph
and they run into each other ..
ax.xaxis.set_major_formatter( DateFormatter('%Y') )
ax.xaxis.set_major_locator( YearLocator() )
ax.xaxis.set_minor_formatter( DateFormatter('%b'))
ax.xaxis.set_minor_locator( MonthLocator(interval=1) )
ax.plot_date(dates,values, label="My 
Label",color='g',linestyle='-',marker='.')
Thanks / Frank