[Matplotlib-users] How to plot straight lines on polar plots
Hi, Im having some trouble with this "seemingly" simple task of plotting straight lines/fitted curves on a polar plot. I am trying to create a plot that resembles the layout of the chart seen below: http://www.nabble.com/file/p21721073/brisbane.png So far I have only been able to plot data like so: http://www.nabble.com/file/p21721073/AzvAlt.png The blue line should be similar to the bottom line of the first example plot. The line would ultimately be formed by fitting a straight line/curve through the points, instead of the way matplotlib is plotting. I am plotting tuples of values (az and alt), and plotting using: ax.plot(az, alt, 'b') -- View this message in context: http://www.nabble.com/How-to-plot-straight-lines-on-polar-plots-tp21721073p21721073.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] How to plot straight lines on polar plots
Thanks for the help, but I can't quite see where to add the add_axes code.
Here is the code I have been using to plot, the polar plot is a subplot.
fig=figure()
ax=fig.add_subplot(111, polar=True)
ax.set_xticklabels(["E",45,"N",315,"W",225,"S",135])
ax.set_yticklabels([80,70,60,50,40,30,20,10])
...
ax.plot(az, alt, 'b')
fig.savefig('AzvAlt.png')
show()
Michael Droettboom-3 wrote:
>
> I'm embarrassed to see that I neglected to document this, but you can
> pass a "resolution" keyword argument to add_axes which sets the number
> of points of interpolation between each pair of data points. Set this
> to 1 to disable interpolation.
>
> This will be documented shortly.
>
> Mike
>
> jamesf0 wrote:
>> Hi,
>>
>> Im having some trouble with this "seemingly" simple task of plotting
>> straight lines/fitted curves on a polar plot.
>>
>> I am trying to create a plot that resembles the layout of the chart seen
>> below:
>>
>> http://www.nabble.com/file/p21721073/brisbane.png
>>
>>
>>
>> So far I have only been able to plot data like so:
>>
>> http://www.nabble.com/file/p21721073/AzvAlt.png
>>
>>
>> The blue line should be similar to the bottom line of the first example
>> plot. The line would ultimately be formed by fitting a straight
>> line/curve
>> through the points, instead of the way matplotlib is plotting.
>>
>> I am plotting tuples of values (az and alt), and plotting using:
>>
>>
>> ax.plot(az, alt, 'b')
>>
>
> --
> Michael Droettboom
> Science Software Branch
> Operations and Engineering Division
> Space Telescope Science Institute
> Operated by AURA for NASA
>
>
> --
> This SF.net email is sponsored by:
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--
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Re: [Matplotlib-users] How to plot straight lines on polar plots
Yeah "trying" to plot sun paths. I'll be more than happy to share once it's complete. James. Timmie wrote: > > Hello, > I am trying to create a plot that resembles the layout of the chart seen below: http://www.nabble.com/file/p21721073/brisbane.png > are you actually trying to plot sun path digrams? > > May you share a part of your code once it is completed? > > I'd be very interested in seeing a working example. > > Kind regards, > Timme > > > -- > This SF.net email is sponsored by: > SourcForge Community > SourceForge wants to tell your story. > http://p.sf.net/sfu/sf-spreadtheword > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > -- View this message in context: http://www.nabble.com/How-to-plot-straight-lines-on-polar-plots-tp21721073p21738933.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] How to plot straight lines on polar plots
Sorry, I have done that change, and get these errors: Traceback (most recent call last): File "test7.py", line 36, in ax=fig.add_subplot(111, polar=True, resolution=1) File "/usr/lib/python2.5/site-packages/matplotlib/figure.py", line 676, in add_subplot a = subplot_class_factory(projection_class)(self, *args, **kwargs) File "/usr/lib/python2.5/site-packages/matplotlib/axes.py", line 6823, in __init__ self._axes_class.__init__(self, fig, self.figbox, **kwargs) File "/usr/lib/python2.5/site-packages/matplotlib/projections/polar.py", line 171, in __init__ Axes.__init__(self, *args, **kwargs) File "/usr/lib/python2.5/site-packages/matplotlib/axes.py", line 537, in __init__ if len(kwargs): martist.setp(self, **kwargs) File "/usr/lib/python2.5/site-packages/matplotlib/artist.py", line 894, in setp func = getattr(o,funcName) AttributeError: 'PolarAxesSubplot' object has no attribute 'set_resolution' Jouni K. Seppänen wrote: > > Change this to > > ax=fig.add_subplot(111, polar=True, resolution=1) > > and the resolution will get passed to the PolarAxes instance. > > -- > Jouni K. Seppänen > http://www.iki.fi/jks > -- View this message in context: http://www.nabble.com/How-to-plot-straight-lines-on-polar-plots-tp21721073p21742133.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
