MATLAB: Best fit line in polarscatter graph??

Question

hey everyone. New to matlab and I generated a two series polar plot. Is is possible to find a best fit line for a data in polar plot???? below is the data for one of the sets. Now, it it possible to get a best fit line? Please and thank you.

>>theta =

   -1.0288
   -1.2100
   -1.2939
   -1.2154
   -1.1319
   -1.0932
   -0.9575
   -1.0157
   -1.0940
   -1.1195
   -1.2772
   -1.3624

>>rho =

    4.4195
    5.6823
    7.0426
    7.1330
    9.2521
   11.1276
   12.4041
   12.0159
   15.0591
   20.9700
   23.3849
   26.4164
>>polarscatter (theta, rho)
>>ax=gca
>>ax. ThetaZeroLocation = 'left'

Answer 1

 % change polar to Cartesian 
  [x,y] = pol2cart(theta,rho) ;
  %%fit line in Cartesian coordinates
  P = polyfit(x,y,1);
  yfit = P(1)*x+P(2);
  figure
  plot(x,y,'.r')
  hold on;
  plot(x,yfit,'b');
  %%Change fit coordinates to polar
  [thetafit,rhofit] = cart2pol(x,yfit) ;
  figure
  polarscatter (theta, rho) ;
  ax=gca ;
  ax. ThetaZeroLocation = 'left' ;
  hold on
  polarscatter (thetafit, rhofit,'r') ;