matplotlib-users Mailing List for matplotlib (Page 13)

Hi,
I am new to matplotlib. So if I ask sth stupid, please bear with me.
I am using matplotlib to present large data set in different graph types,
bar, dot, line, etc. I find that the bar graph has very bad performance.
Say, I draw data points of about ten thousand. Using dot graph, it draws
in a second. But using bar graph, it draws in tens of seconds.
I was wondering what causes this difference. Is there a way to improve the
bar graph performace? (Maybe I am not drawing it right, then, please give
me a pointer)
Below is a simple example:
from np.random import uniform
from numpy.random import uniform
x = uniform(0, 10, 14000)
y = uniform(0, 100, 14000)
plt.plot(x, y, 'bo')
plt.bar(x, y)
Thanks,
Kun

Is there a straightforward way of plotting a vector in matplotlib? Suppose I
want to plot the vector [1 2]'. If I pass this vector in to plot(), I get
the line that passes through (0,1), (1,2). Instead I want the line that
passes through (0,0),(1,2).
Aditya
wefoundland.com

On Wed, Apr 28, 2010 at 3:48 AM, David Epstein <dav...@um...> wrote:
> Here is the problem: each row is read once and those that matche
> the "if" statement are plotted once--but somehow generate TWO LABELS in
> the legend. How is that possible?! I've attached a code snippet below. I
> apologize for any sloppy coding--I'm new to python.
>
Please post a simple, but complete code that reproduces your problem.
-JJ