More points in polar plot than expected

Community matplotlib-users
1

Hi there,

telling pyplot

    polar([1,2,3,4],[1,3,4,2], "o")

to my surprise does not give me 4 distinct points but rather some
interpolated points as well. This is highly unexpected, nay, unwanted.
It used to work well in Fedora 8 (don't know which version I ran
there).

Fedora 10
Python 2.5.2
matplotlib 0.98.1

Any ideas?

/W

2

Works for me on 0.98.3 and SVN HEAD. I get 4 blue dots. Can you send an image showing the output you’re getting?

Ryan

···

On Tue, Dec 2, 2008 at 10:12 AM, Wildemar Wildenburger <wildemar@…2417…> wrote:

Hi there,

telling pyplot

polar([1,2,3,4],[1,3,4,2], "o")

to my surprise does not give me 4 distinct points but rather some

interpolated points as well. This is highly unexpected, nay, unwanted.

It used to work well in Fedora 8 (don’t know which version I ran

there).

Fedora 10

Python 2.5.2

matplotlib 0.98.1

Any ideas?

–
Ryan May
Graduate Research Assistant

School of Meteorology
University of Oklahoma

3

Yeah. This is a known bug that was fixed since 0.98.1.

Cheers,
Mike

Ryan May wrote:

···

On Tue, Dec 2, 2008 at 10:12 AM, Wildemar Wildenburger > <wildemar@...2417... <mailto:wildemar@…2417…>> wrote:

    Hi there,

    telling pyplot

       polar([1,2,3,4],[1,3,4,2], "o")

    to my surprise does not give me 4 distinct points but rather some
    interpolated points as well. This is highly unexpected, nay, unwanted.
    It used to work well in Fedora 8 (don't know which version I ran
    there).

    Fedora 10
    Python 2.5.2
    matplotlib 0.98.1

    Any ideas?

Works for me on 0.98.3 and SVN HEAD. I get 4 blue dots. Can you send an image showing the output you're getting?

Ryan

--
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma
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Michael Droettboom
Science Software Branch
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Space Telescope Science Institute
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4

See the attached screenshot.

thanks,
/W

polarplot.png
polarplot.png622×662 50.4 KB

···

On Tue, 2 Dec 2008 11:11:44 -0600 "Ryan May" <rmay31@...287...> wrote:

On Tue, Dec 2, 2008 at 10:12 AM, Wildemar Wildenburger < > wildemar@...2417...> wrote:

> (snip)
> polar([1,2,3,4],[1,3,4,2], "o")
>
> to my surprise does not give me 4 distinct points but rather some
> interpolated points as well. This is highly unexpected, nay,
> unwanted. It used to work well in Fedora 8 (don't know which
> version I ran there).
>
> Fedora 10
> Python 2.5.2
> matplotlib 0.98.1
>(snip)

Works for me on 0.98.3 and SVN HEAD. I get 4 blue dots. Can you
send an image showing the output you're getting?

5

Rats! Lets hope the Fedora guys are quick with the updating.

Thanks for ending my head-banging, though.

/W

···

On Tue, 02 Dec 2008 12:43:14 -0500 Michael Droettboom <mdroe@...86...> wrote:

Yeah. This is a known bug that was fixed since 0.98.1.