Adding fractions to axis tick marks

How do you turn the tick mark labels into fractions rather than decimals. Take the following code for example. I would like the tick mark to remain in their current location but display their associated fraction instead.

x=.1:.1:.5
y=1:5
clf
plot(x,y,'color','r','linewidth',2)
set(gca, 'XTick', [1/16 1/8 3/16 1/4 5/16 3/8 7/16 1/2])

Answer 1

[Walter Roberson]

If you are using R2014b or later, you

set(gca, 'TickLabelInterpreter', 'latex', 'XTickLabel', {'$\frac{1}{16}$', '$\frac{1}{8}$', '$\frac{3}{16}$', '$\frac{1}{4}$', '$\frac{5}{16}$', '$\frac{3}{8}$', '$\frac{7}{16}$', '$\frac{1}{2}$'})

If you are using an earlier version, you could go through some trouble to text() the individual labels in place, because in those earlier versions, individual text() could have an interpreter but TickLabelInterpreter could not be set. So in those earlier versions it would probably be easier to

set(gca, 'XTickLabel', {'1/16' '1/8' '3/16' '1/4' '5/16' '3/8' '7/16' '1/2'})

[Mitchell Frechette]

Thank you! This worked just how I wanted.

Answer 2

[Jan]

Is it possible to find a soft-code this? So instead of

 set(gca, 'TickLabelInterpreter', 'latex', 'XTickLabel', {'$\frac{1}{16}$', '$\frac{1}{8}$', '$\frac{3}{16}$', '$\frac{1}{4}$', '$\frac{5}{16}$', '$\frac{3}{8}$', '$\frac{7}{16}$', '$\frac{1}{2}$'})

I would like to go for a version where

 a=[16 8 4 2 1]
 set(gca, 'TickLabelInterpreter', 'latex', 'XTickLabel', {'$\frac{1}{a}$'})

So basicly my question is, how to load a variable while writing in a math mode of latex.

[Erik RF]

Yes, try this.

val = 0:0.25:10;            % your vector of values in decimal form
[num, den] = rat(num);      % convert to rational form
ticks = '$\frac{'+string(enu)+'}{'+string(den)+'}$';
set(gca, 'TickLabelInterpreter', 'latex', 'XTickLabel', ticks)

You can also add more info to each label if you want, for example add pi like this:

ticks = '$\frac{'+string(enu)+'}{'+string(den)+'}\pi$';