Prev: QT clustering implementation/details?
Next: Using Matlab Builder JA
From: Judy on 19 Jan 2010 20:31
Hey everybody,

Is it possible to specify the limits of the pho on the polar plot? The function polar() automatically defaults to [0 whatever]. My rho values go from i.e. 10 to 20 and it would be nice for it to show the limits of rho from 10 to 20 instead of 0 to 20 to show the variation better.

Thanks in advance!! Much appreciated!
From: TideMan on 19 Jan 2010 21:14
On Jan 20, 2:31 pm, "Judy " <sauwen...(a)gmail.com> wrote:
> Hey everybody,
>
> Is it possible to specify the limits of the pho on the polar plot?  The function polar() automatically defaults to [0 whatever].  My rho values go from i.e. 10 to 20 and it would be nice for it to show the limits of rho from 10 to 20 instead of 0 to 20 to show the variation better.
>
> Thanks in advance!!  Much appreciated!

Think about it.
rho is the distance from the centre and the lines radiate from the
centre.
How could what you're suggesting possibly work?

Take a piece of paper and try sketching it.
You'll soon see it's a hare-brained idea.

From: Judy on 20 Jan 2010 12:45
TideMan <mulgor(a)gmail.com> wrote in message <5912cb2f-ae14-44f0-8d47-dc65117a12fb(a)30g2000yqu.googlegroups.com>...
> On Jan 20, 2:31 pm, "Judy " <sauwen...(a)gmail.com> wrote:
> > Hey everybody,
> >
> > Is it possible to specify the limits of the pho on the polar plot?  The function polar() automatically defaults to [0 whatever].  My rho values go from i.e. 10 to 20 and it would be nice for it to show the limits of rho from 10 to 20 instead of 0 to 20 to show the variation better.
> >
> > Thanks in advance!!  Much appreciated!
>
> Think about it.
> rho is the distance from the centre and the lines radiate from the
> centre.
> How could what you're suggesting possibly work?
>
> Take a piece of paper and try sketching it.
> You'll soon see it's a hare-brained idea.

Take for example this figure:
http://www.wavecapture.com/images/AudioCap/polarplot2.jpg

The rho values are going from 135-185dB. I don't understand why you think it's a bad idea.. maybe I am missing something? I just want to figure out how to plot something like this without matlab always having to automatically adjust the rho limits from 0-185dB.

I noticed that matlab also does not like negative rho values.. Impossible to plot negative dB values?

Thanks. :)
From: Walter Roberson on 20 Jan 2010 17:21
Judy wrote:

> Is it possible to specify the limits of the pho on the polar plot? The
> function polar() automatically defaults to [0 whatever]. My rho values
> go from i.e. 10 to 20 and it would be nice for it to show the limits of
> rho from 10 to 20 instead of 0 to 20 to show the variation better.

No, but you can cheat. See my response in

http://groups.google.ca/group/comp.soft-sys.matlab/browse_thread/thread/8e8568fbc2e25af/b183026799930c33

See also the recommendation there from someone to use mmpolar() from the file
exchange.
From: Nathan on 20 Jan 2010 19:11
On Jan 20, 2:21 pm, Walter Roberson <rober...(a)hushmail.com> wrote:
> Judy wrote:
> > Is it possible to specify the limits of the pho on the polar plot?  The
> > function polar() automatically defaults to [0 whatever].  My rho values
> > go from i.e. 10 to 20 and it would be nice for it to show the limits of
> > rho from 10 to 20 instead of 0 to 20 to show the variation better.
>
> No, but you can cheat. See my response in
>
> http://groups.google.ca/group/comp.soft-sys.matlab/browse_thread/thre...
>
> See also the recommendation there from someone to use mmpolar() from the file
> exchange.

Note: mmpolar is NOT on the FEX. It appears to have been removed about
two years ago by Duane Hanselman
http://www.mathworks.com/matlabcentral/newsreader/view_thread/165930

Here is a link to the code, however:
http://www.eece.maine.edu/mm/MM5/mm5/mmpolar.m

-Nathan

 | 
Pages: 1
Prev: QT clustering implementation/details?
Next: Using Matlab Builder JA