matplotlib-devel

[matplotlib-devel] Plot with color argument as a list

[V. <gae...@no...>]

	Hi,

    It would be a nice feature for the plot command to accept a list of
rgb colors of the same length than the data vectors to be plotted, in
order to generate plots alike the one on the wiki
"http://scipy.org/Cookbook/Matplotlib/MulticoloredLine".

	Regards,

    Ga=EBl

Re: [matplotlib-devel] Plot with color argument as a list

[John H. <jdh...@ac...>]

>>>>> "Ga=EBl" =3D=3D Ga=EBl Varoquaux <gae...@no...> wr=
ites:

    Ga=EBl> 	Hi, It would be a nice feature for the plot command to
    Ga=EBl> accept a list of rgb colors of the same length than the data
    Ga=EBl> vectors to be plotted, in order to generate plots alike the
    Ga=EBl> one on the wiki
    Ga=EBl> "http://scipy.org/Cookbook/Matplotlib/MulticoloredLine".

Eric recently updated LineCollection to inherit from ScalarMappable
(in mpl 0.87.3) which means you can pass it a colormap instance.
Perhaps we should update the wiki example to reflect this.  I'm not at
all opposed to making a helper function like scatter to plot
parametric lines with colormaps, but I don't think "plot" is the right
vehicle, since it returns a Line2d, not a LineCollection, and since it
is already heavily overloaded.  parplot? =20

JDH

Re: [matplotlib-devel] Plot with color argument as a list

[V. <gae...@no...>]

On Tue, Jun 13, 2006 at 09:21:44AM -0500, John Hunter wrote:
> I'm not at all opposed to making a helper function like scatter to plot
> parametric lines with colormaps, but I don't think "plot" is the right
> vehicle, since it returns a Line2d, not a LineCollection, and since it
> is already heavily overloaded.  parplot? =20

    I think having a helper function is a good idea. Not only does it
help the newcomer, but it also allows the oldtimer to write shorter and
more readable code.

    I find that "parplot" is not a great name for such a function, but I
cannot think of a better one. Maybe the list will have better ideas.

    Ga=EBl

Re: [matplotlib-devel] Plot with color argument as a list

[V. <gae...@no...>]

On Tue, Jun 13, 2006 at 05:33:57PM +0200, Ga=EBl Varoquaux wrote:
>     I find that "parplot" is not a great name for such a function, but =
I
> cannot think of a better one. Maybe the list will have better ideas.

    Talking to a friend we came up with a name like "pathcolor", or
"pathplot".

	Ga=EBl

Re: [matplotlib-devel] Plot with color argument as a list

[Robert H. <he...@ta...>]

How about 'plots'?  (i.e., a bunch of plot commands)

Perhaps this could also be the function that loops through multiple =20
lines.  For example in matlab you can do

plot (x, y)
plot (x', y')

to plot out a grid -- the columns (or is it the rows..) are looped =20
through inside the plot command.  Is this the sort of thing you have =20
in mind for the new 'parplot' command?

-Rob

On Jun 14, 2006, at 1:06 AM, Ga=EBl Varoquaux wrote:

> On Tue, Jun 13, 2006 at 05:33:57PM +0200, Ga=EBl Varoquaux wrote:
>>     I find that "parplot" is not a great name for such a function, =20=

>> but I
>> cannot think of a better one. Maybe the list will have better ideas.
>
>     Talking to a friend we came up with a name like "pathcolor", or
> "pathplot".
>
> 	Ga=EBl
>
>
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-----
Rob Hetland, Assistant Professor
Dept of Oceanography, Texas A&M University
p: 979-458-0096, f: 979-845-6331
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