Modifying font size for pie chart lables

问题

I am using a simple script for a pie chart, but I am unable to change the font size of the pie labels. Is there an easy way to change it?

Below is my plotting code:

h = pie ([0.1,0.1,0.1,0.1,0.1], {"unlikely","possible","likely","very likely","certain"});
y = 0; 
n = 1; 

colormap([1 1 n;    %// unlikely
          1 1 y;    %// possible
          1 1 y;    %// likely
          1 1 y;    %// very unlikely
          1 1 n;])  %// certainly
ax = gca();
set(ax,'fontsize', 18);
view([270, -90])

回答1:

The variable h contains an array of five Patch objects intertwined with 5 Text objects. Use the following command to set all font sizes for the text objects.

set(h(2:2:end),'FontSize',16);

回答2:

To programmatically set the fontsize or any other property of graphical elements of a certain type you should use the findobj() function to find all elements of this type. Then you can use a single set command to set properties. In your example you have to write:

set(findobj(h,'type','text'),'fontsize',18)

This will change all font sizes of all text elements in the pie chart.

Complete Example

I adapted your example to show the effect:

h = pie ([0.1,0.1,0.1,0.1,0.1], {"unlikely","possible","likely","very likely","certain"});
y = 0; 
n = 1; 

colormap([1 1 n;    %// unlikely
          1 1 y;    %// possible
          1 1 y;    %// likely
          1 1 y;    %// very unlikely
          1 1 n;])  %// certainly

view([270, -90])
set(findobj(h,'type','text'),'fontsize',18);

Graphical Output

来源：https://stackoverflow.com/questions/47262876/modifying-font-size-for-pie-chart-lables