How do I turn off the grid in a polar plot?

For a normal MATLAB plot, I can turn the grid off and on with the grid command.

x = 1:10;
plot(x,sin(x))
grid on      % now the grid is on
pause(1)
grid off     % now it's off

But that doesn't work for a polar plot. Plus the grid is on by default. How do I turn it off?

Answer 1

[Ned Gulley]

It's a shame that it's not easier to do this, but here is a Solution that explains how to do it:

How can I remove the grid lines and labels from a polar plot within MATLAB?

Here's the code provided in that Solution.

% create the polar plot, and store the line's handle
p = polar((0:99)*pi/100, (0:99)/100);

% find all of the lines in the polar plot
h = findall(gcf,'type','line');
% remove the handle for the polar plot line from the array
h(h == p) = [];
% delete all other lines
delete(h);

% If you want, use the following lines to remove the text.
% (I prefer to leave it in place)

% find and remove all of the text objects in the polar plot
% delete(findall(gcf,'type','text'))

Answer 2

[Walter Roberson]

% create the polar plot, and store the line's handle
p = polar((0:99)*pi/100, (0:99)/100);
%remove lines and text objects except the main line
delete(findall(ancestor(p,'figure'),'HandleVisibility','off','type','line','-or','type','text'));

[Walter Roberson]

Answer updated to avoid relying on gcf in case the plot is in a different figure.

Answer 3

[Daniel Zuth]

Use polarplot() instead polar() and grid off.

[Walter Roberson]

Yes, that is a good method for R2016a or later. polarplot() did not exist when the question was first posted in 2011.