Re: [Matplotlib-users] plotting a colored symbol with plot command

[Damon M. <dam...@gm...>]

On Fri, Aug 24, 2012 at 09:20:47PM +0100, Damon McDougall wrote:
> Hey Michael!
> 
> Welcome :)
> 
> On Fri, Aug 24, 2012 at 01:00:13PM -0700, Michael Rawlins wrote:
> > 
> > Relatively new user here. I need to place a series of white colored dots on a map. I've been able to place black dots using:
> > 
> > plt.plot(x,y,color='k',marker='.',markersize=3.0)
> >
> 
> You can change the colour with:
> 
> plt.pyplot(x, y, color='g', marker='.', markersize=3.0)
> 
> That will plot a green dot.
> 
> > 
> > The color option in this command does not plot the chosen color, only black. The command:
> > 
> > plt.plot(x,y,'wo')
> >
> 
> You can change the colour of the edge with the 'markeredgecolour'
>

Sorry! That should me 'markeredgecolor'. All commands are American
spelling.

If I had a penny for every time I got a syntax error for using British
spelling, I'd have about 3 pence.

> option, or 'mec' for short:
> 
> plt.plot(x, y, 'wo', mec='w')
> 
> Kablam! Big white Os with no black edge.
> You can also control the size of the marker there, too:
> 
> plt.plot(x, y, 'wo', mec='w', markersize=10.0)
> 
> > 
> > places white dots with black around the edges.  I see that the 'w' is for white and 'o' is for the symbol. I'd like to use the former command since that gives me control over marker size and a dot without a black edge.
> > 
> > Lastly, it's not clear to me if I should be using plt.plot or just plot. Both work, and I don't know the difference. 
> 
> If you're using pylab, it doesn't matter:
> 
> In [5]: print plot
> <function plot at 0x10cddbd70>
> 
> In [6]: print plt.plot
> <function plot at 0x10cddbd70>
> 
> They are *literally* the same function in memory.
> 
> Hope this helps, Michael.
> Good luck!
> 
> -- 
> Damon McDougall
> http://www.damon-is-a-geek.com
> B2.39
> Mathematics Institute
> University of Warwick
> Coventry
> West Midlands
> CV4 7AL
> United Kingdom

-- 
Damon McDougall
http://www.damon-is-a-geek.com
B2.39
Mathematics Institute
University of Warwick
Coventry
West Midlands
CV4 7AL
United Kingdom