Adding polar plot to axes is not supported

Hi,

The code works most of the time. sometimes, it showed error "Adding polar plot to axes is not supported" and I closed the matlab and ran again. Then it works for the same data.

Is there because there is a bug in Matlab when installation or the code is optimized. Please suggest. Thanks.

for i = 1: size (OSI,1)
    if OSI (i) > 0.5
    theta = 0 : pi/4: 2*pi;
    p (i) = figure (i);
    polarplot (theta, rho (i,:));
    pax = gca;
    thetaticks(0:45:315)
    pax.ThetaDir = 'clockwise';
    pax.ThetaZeroLocation = 'right';
    pax.RTickLabel = [];                             %remove rho values inside polar plot
    hlines = findall(gcf,'Type','line'); set(hlines,'LineWidth',3); %inside lines thicker
    rl = rlim; hold on
    polarplot([0 pi], rl(2)*[1 1], 'k--');           %connecting 0 and 180
    polarplot([3*pi/2 pi/2], rl(2)*[1 1], 'k--');    %connecting 90 and 270
    polarplot(linspace(0, 2*pi, 61), rl(2)*ones(61,1), 'k-', 'LineWidth', 2)    %making border thicker
    grid off; 
    title (sprintf('ROI %d: OSI %0.2f DSI %0.2f', i, OSI(i), DSI (i)))
    cd(path_stim_all{itr})
    saveas (gcf,strcat('ROI', '_', num2str(i), '_', 'OSI', '_', num2str (OSI(i)), 'DSI', '_', num2str (DSI(i)), '.jpeg'));
    close all
    end
end

Answer 1

[Walter Roberson]

That error could potentially happen if figure(i) already exists and has a non-polar axis that already has "hold on" -- oh yes, and it would have to be i such that it is the first OSI(i) > 0.5 because you have the "close all" at the bottom.

You should probably not be creating a new figure each time; you should create a single figure before the loop and you should cla() each iteration, and get rid of the close all.

[HYZ]

thanks. it works now!