matplotlib-users

[Matplotlib-users] Surface Plot

[Ted K. <ted...@go...>]

Hi

I'd like to generate a surface plot using mplot3d. However, Z is not a
function of X and/or Y. It's just a set of scalar values. So, the following
doesn't work:

X = np.arange(2, 102, 2)
Y = np.arange(0, 15.15, 0.15)
X, Y = np.meshgrid(X, Y)
Z = f[2]
ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.jet)

Is there a way that I can do this?

Thank you.

Ted

[Matplotlib-users] Surface Plot

[Ted K. <ted...@go...>]

Hi

I'd like to generate a surface plot using mplot3d. However, Z is not a
function of X and/or Y. It's just a set of scalar values. So, the following
doesn't work:

X = np.arange(2, 102, 2)
Y = np.arange(0, 15.15, 0.15)
X, Y = np.meshgrid(X, Y)
Z = f[2]
ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.jet)

Is there a way that I can do this?

Thank you.

Ted

Re: [Matplotlib-users] Surface Plot

[<PH...@Ge...>]

Hey Ted,

I don't quite understand how you're getting the Z data below. But if you have 3D data in X, Y, and Z 1D-arrays, the griddata function should work for you. 
http://matplotlib.sourceforge.net/api/mlab_api.html#matplotlib.mlab.griddata

HTH, 
-paul

-------------------------------------
From: Ted Kord [mailto:ted...@go...] 
Sent: Saturday, February 06, 2010 1:05 PM
To: mat...@li...
Subject: [Matplotlib-users] Surface Plot

Hi

I'd like to generate a surface plot using mplot3d. However, Z is not a function of X and/or Y. It's just a set of scalar values. So, the following doesn't work:

X = np.arange(2, 102, 2)
Y = np.arange(0, 15.15, 0.15)
X, Y = np.meshgrid(X, Y)
Z = f[2]
ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.jet) 

Is there a way that I can do this?

Thank you.

Ted

Re: [Matplotlib-users] Surface Plot

[Ted K. <ted...@go...>]

Hi Paul

This helped immensely. Thanks.

Ted

Re: [Matplotlib-users] Surface Plot

[Ted K. <ted...@go...>]

On 8 February 2010 17:37, <PH...@ge...> wrote:

> Hey Ted,
>
> I don't quite understand how you're getting the Z data below. But if you
> have 3D data in X, Y, and Z 1D-arrays, the griddata function should work for
> you.
>
> http://matplotlib.sourceforge.net/api/mlab_api.html#matplotlib.mlab.griddata
>
> HTH,
> -paul
>
>
Hi  Paul

Is there a way to colour the output? For some reason, the final output is in
a single colour even though I've specified cm.jet for the colour map.

Regards

Ted

Re: [Matplotlib-users] Surface Plot

[<PH...@Ge...>]

Ted,

How does this example run for you?
http://matplotlib.sourceforge.net/examples/pylab_examples/griddata_demo.html

From: Ted Kord [mailto:ted...@go...]
Sent: Monday, February 08, 2010 12:00 PM
To: Paul Hobson
Cc: mat...@li...
Subject: Re: [Matplotlib-users] Surface Plot

On 8 February 2010 17:37, <PH...@ge...<mailto:PH...@ge...>> wrote:
Hey Ted,

I don't quite understand how you're getting the Z data below. But if you have 3D data in X, Y, and Z 1D-arrays, the griddata function should work for you.
http://matplotlib.sourceforge.net/api/mlab_api.html#matplotlib.mlab.griddata

HTH,
-paul

Hi  Paul

Is there a way to colour the output? For some reason, the final output is in a single colour even though I've specified cm.jet for the colour map.

Regards

Ted

Re: [Matplotlib-users] Surface Plot

[Ted K. <ted...@go...>]

Paul

The example works fine and was quite instructive. Thx.

Ted



On 8 February 2010 21:41, <PH...@ge...> wrote:

>  Ted,
>
>
>
> How does this example run for you?
>
>
> http://matplotlib.sourceforge.net/examples/pylab_examples/griddata_demo.html
>
>
>
> *From:* Ted Kord [mailto:ted...@go...]
> *Sent:* Monday, February 08, 2010 12:00 PM
> *To:* Paul Hobson
> *Cc:* mat...@li...
> *Subject:* Re: [Matplotlib-users] Surface Plot
>
>
>
> On 8 February 2010 17:37, <PH...@ge...> wrote:
>
> Hey Ted,
>
> I don't quite understand how you're getting the Z data below. But if you
> have 3D data in X, Y, and Z 1D-arrays, the griddata function should work for
> you.
>
> http://matplotlib.sourceforge.net/api/mlab_api.html#matplotlib.mlab.griddata
>
> HTH,
> -paul
>
>
>
> Hi  Paul
>
>
>
> Is there a way to colour the output? For some reason, the final output is
> in a single colour even though I've specified cm.jet for the colour map.
>
>
>
> Regards
>
>
>
> Ted
>
>
>