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

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?

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R2014b

1 Answer

Answer by MathWorks Support Team on 27 Aug 2014
 Accepted Answer

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:

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