## How do I get exponent values for log axes in MATLAB R2014b?

### MathWorks Support Team (view profile)

on 27 Aug 2014
Latest activity Answered by MathWorks Support Team

### MathWorks Support Team (view profile)

on 8 Oct 2014
Accepted Answer by MathWorks Support Team

### MathWorks Support Team (view profile)

I have a plot created using the 'semilogx' function. I am trying to access the exponent values for the tick labels for the 'x' axis. In MATLAB R2014a, I could access the exponent values using the command: ticks = get(gca,'XtickLabel') which would return a character array of exponent values for the ticks. How do I do the same task in MATLAB R2014b?

R2014b

### MathWorks Support Team (view profile)

on 27 Aug 2014

Starting in R2014b, the XTickLabel, YTickLabel, or ZTickLabel properties for a log axis contain cell arrays with the full TeX markup used for the tick labels. In previous releases these properties contain a character array with only the exponent values for the tick marks.
Starting in R2014b, this code returns the tick labels a cell array with the full TeX markup:
semilogx(1:10000);
ax = gca;
ticks = ax.XTickLabel

ticks =

'10^{0}'
'10^{1}'
'10^{2}'
'10^{3}'
'10^{4}'

class(ticks)

ans =

cell

In R2014a and earlier, this code returns a character array with the exponent values:
semilogx(1:10000);
ax = gca;
ticks = get(ax,'XTickLabel')
ticks =

0
1
2
3
4
class(ticks)

ans =

char

To extract just the exponent values from the tick label property, use the regexprep function with the following syntax.
expression = '\d*\^\{(\-?\d*)\}';
replace = '\$1';
exponents = regexprep(ticks,expression,replace)

exponents =

'0'
'1'
'2'
'3'
'4'
Documentation for the regexprep function is available at the following link: