Re: [Matplotlib-users] How to set marker for a specific point in a scatter plot with colormap?

[Chao Y. <cha...@gm...>]

OK, after posting I realize I can pass a vector to the 's' keyword in
plt.scatter to set the marker size, like s=[20,20,20,20,20,50,20,20,20,20].
How about using a different marker type? Thanks!

Regards,
Chao

On Mon, Jul 11, 2016 at 10:27 PM, Chao YUE <cha...@gm...> wrote:

> Dear all matplotlib users,
>
> I have a user case that, let's say I have three series data: x,y,z.
> I would like to make a scatter plot using (x,y) as coordinates and z as
> the color of scatter points, using cmap keyword of plt.scatter. However, I
> would like to highlight some specific point by using a different marker (or
> marker size) than other points.
>
> ​A minimum example is like below:
> x,y,z = np.random.randn(3,10)
> plt.scatter(x,y,c=z,cmap=matplotlib.cm.jet)
> plt.colorbar()​
>
> ​If I want to use a different marker or marker size for (x[5],y[5],z[5]),
> how could I do that?
> The only way I can think of is to plot again for this point using
> plt.scatter([x[5],y[5]) but define the color by manually finding the
> colormap ​color corresponding to z[5]. However this is quite tedious. Is
> there a better way?
>
> ​Thanks a lot for any help,
>
> Regards,
> Chao​
>
> --
> please visit:
> http://www.globalcarbonatlas.org/
>
> ***********************************************************************************
> Chao YUE
> postdoc at LSCE
> CEA-Ormes des Merisiers, F-91191 GIF-SUR-YVETTE CEDEX
> Tel: 33 1 69 08 41 87
>
> ************************************************************************************
>



-- 
please visit:
http://www.globalcarbonatlas.org/
***********************************************************************************
Chao YUE
postdoc at LSCE
CEA-Ormes des Merisiers, F-91191 GIF-SUR-YVETTE CEDEX
Tel: 33 1 69 08 41 87
************************************************************************************