How do I label my y-axes with a percent sign (%) in MATLAB?

I would like to change the axis tick labes to a percentatge of a number rather than just that set of numbers.

Answer 1

[MathWorks Support Team]

This can be done after plotting your figure. The code given below shows an example on how to get the current axis labels and format them into a string with the percent symbol. Once this is done it sets the axis tick labels back to the figure axis.

surf(peaks)

% lines 6,7,8 get the axis labels. 

% lines 10,11,12 create the respective Percent vectors 

% lines 14,15,16 concatenate the vectors

xticks = [get(gca,'xtick')]'; % Gets the axis tick labels.

yticks = [get(gca,'ytick')]'; % There is a transpose operation here.

zticks = [get(gca,'ztick')]'; % 

percentsx = repmat('%', length(xticks),1);  %  makes a matrix

percentsy = repmat('%', length(yticks),1);  %  equal to the size

percentsz = repmat('%', length(zticks),1);  %  of the number of ticks

xticklabel = [num2str(xticks) percentsx];

yticklabel = [num2str(yticks) percentsy]; % concatenates the tick labels 

zticklabel = [num2str(zticks) percentsz]; %with percentages

set(gca,'xticklabel',xticklabel) 

set(gca,'yticklabel',yticklabel)% Sets tick labels back on the Axis

set(gca,'zticklabel',zticklabel)

% Sets them back on the Axis

[Ron Fredericks]

xticks, yticks, zticks variable assignment do not need the brackets [ ].

But the proceedure itself works great.