matplotlib-users Mailing List for matplotlib

Hello,

I'm trying to find a way to use imshow or contourf with a logarithmic
colormap. Searching the threads I've found a few queries about this before,
but not a solution. Any suggestions?

Thanks!
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Martinho MA wrote:
> hello, I have a problem quiver:
> In my code there is:
> 
> fill(...)
> quiver(..)
> 
> but the arrows stay under the fill !! If I would like it, with a bit of 
> logic, I would wrote:
> 
> quiver(...)
> fill(...)

q = quiver(...)
q.set_zorder(10)

This will ensure the arrows are drawn on top of everything else.

> 
> Any help?
> By the way, how to make an extra arrow to be used as a scale, with some 
> text anotation?

In the examples directory, see quiver_demo.py.  It includes the 
quiverkey command, which is designed for exactly this.

Eric

hello, I have a problem quiver:
In my code there is:

fill(...)
quiver(..)

but the arrows stay under the fill !! If I would like it, with a bit of 
logic, I would wrote:

quiver(...)
fill(...)

Any help?
By the way, how to make an extra arrow to be used as a scale, with some 
text anotation?

Thanks
MM

Darran Edmundson wrote:
> Two simple questions:
> 
> 1) How does one create a simple xy plot with a user-specified y-axis 
> range?  Combination of setting kwargs ylim and autoscale_on doesn't seem 
> to do it ...

pylab.ylim( (ymin, ymax) )

or

pylab.gca().set_ylim( (ymin, ymax) )

?

> 2) If I want to regenerate this plot with revised y data (but same 
> axes), what is the quickest option?  At the moment I'm doing an 
> ax.clear(), presumably tossing out everything and starting from scratch.

I do it this way - just replot everthing ...

> As always, any help is much appreciated.
> 
> Cheers,
> Darran.
> 

Two simple questions:

1) How does one create a simple xy plot with a user-specified y-axis 
range?  Combination of setting kwargs ylim and autoscale_on doesn't seem 
to do it ...

2) If I want to regenerate this plot with revised y data (but same 
axes), what is the quickest option?  At the moment I'm doing an 
ax.clear(), presumably tossing out everything and starting from scratch.

As always, any help is much appreciated.

Cheers,
Darran.

-- 
Darran Edmundson [da...@ed...]
http://www.edmstudio.com