Change the size of the plotted 'o's ?

Community matplotlib-users
1

Hi there,

I've just made script for displaying discrete data clustered in boxes
on my graph. The plots are plotted with plt.plot(x,y,'o') and the 'o's
seem a reasonable size on screen but when I render it to file they
look huge so I'd like to reduce their size. Does anyone know how this
is done?

Regards,

Mikey

2

Sorry a rather stupid question as there are '.'s available. Although I
wouldn't mind knowing if it's possible to tinker with the sizes of
'o's and '.'s.

Thanks,

Mikey

···

On 27 February 2010 00:29, mikey <[email protected]...> wrote:

Hi there,

I've just made script for displaying discrete data clustered in boxes
on my graph. The plots are plotted with plt.plot(x,y,'o') and the 'o's
seem a reasonable size on screen but when I render it to file they
look huge so I'd like to reduce their size. Does anyone know how this
is done?

Regards,

Mikey

3

See the "markersize" parameter

http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.plot

JDH

···

On Fri, Feb 26, 2010 at 6:35 PM, mikey <[email protected]...> wrote:

Sorry a rather stupid question as there are '.'s available. Although I
wouldn't mind knowing if it's possible to tinker with the sizes of
'o's and '.'s.

4

Mike,

There are a couple of ways. See below:

# untested, might have typos ~~~~
import numpy as np
import matplotlib.pyplot as pl

x = np.random.randn(20)
fig = pl.figure()
ax = pl.add_subplot(1,1,1)

# you can specify the marker size two ways directly:
ax.plot(x, 'ko', markersize=4) # size in points
ax.plot(x, 'bs', ms=4) % ms is just an alias for markersize

# or you can specify it after the plotting:
X = ax.plot(x, 'ko') # X is a *list* of line2d objects...

X[0].set_markersize(4) # set_ms works too
# or...
pl.setp(Y, markersize=4) # again, ms works.
# ~~~~~~~~

For a list of all the properties you can tweak, type:
pl.getp(<object>)

HTH,
-paul

···

-----Original Message-----
From: mikey [mailto:abc.mikey@…982…]
Sent: Friday, February 26, 2010 4:29 PM
To: [email protected]
Subject: [Matplotlib-users] Change the size of the plotted 'o's ?

Hi there,

I've just made script for displaying discrete data clustered in boxes
on my graph. The plots are plotted with plt.plot(x,y,'o') and the 'o's
seem a reasonable size on screen but when I render it to file they
look huge so I'd like to reduce their size. Does anyone know how this
is done?

5

Hi there,

I’ve just made script for displaying discrete data clustered in boxes

on my graph. The plots are plotted with plt.plot(x,y,‘o’) and the 'o’s

seem a reasonable size on screen but when I render it to file they

look huge so I’d like to reduce their size. Does anyone know how this

is done?

Regards,

Mikey

Hey,

Try:

I[1]: plt.plot(range(100), “o”, markersize=100)

I[2]: plt.plot(range(100), “o”, markersize=1)

I[3]: plt.figure(); plt.plot(range(100), “o”, ms=1)

···

On Fri, Feb 26, 2010 at 6:29 PM, mikey <abc.mikey@…3004…2…> wrote:

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