Tracking boxplot x axis labels

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Eugenio Daviso
Eugenio Daviso on 18 May 2017
Commented: dpb on 26 May 2017
I am using the boxplot function to visualize data in a hierarchical way. Since the function allows me to define the order and hierarchy of the boxes, is there a way I can retrieve the organized tick labels in a string (cell) array?
Example: By changing the order of the strings a,b,c,d (which are the different values associated to the vector_data) the tick labels on the X axis will change. How can I track that change? Can I get a table showing how the x axis tick labels are organized? What is the figure object that has that info?
comp=[a,b,c,d];
boxplot(vector_data(:,1),comp,'FactorGap',[3,1],'PlotStyle','compact','MedianStyle','line','BoxStyle','outline');
Thank you!
  2 Comments
Eugenio Daviso
Eugenio Daviso on 19 May 2017
I have the attached boxplot and want to create a table of the hierarchical way of the labels on the X axis as they are plotted - left-to-right. As you can see there are four levels: Which property (or object) of the figure has that information?

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Accepted Answer

dpb
dpb on 26 May 2017
OK, I came in late and just picked up on the 'ticklabel' part of the conversation. Went back to the beginning and looked at the original image for the first time. Those aren't tick labels but text. To retrieve them must do some "handle diving" to retrieve the text in the boxplot hggroup.
>> hTxt=findobj(findobj(gca,'Type','hggroup'),'Type','Text'); % the text object handles array
>> txtLabel=cellstr(char(hTxt.String)); % the content in cellstr array
ans =
'A06'
'A04'
'A05'
'A02'
'A03'
'A01'
''
'b'
'a'
'b'
''
'a'
''
''
'B'
''
''
'A'
''
''
'BB'
''
''
'AA'
>>
  2 Comments
dpb
dpb on 26 May 2017
It does help to read the original question sometimes! :)

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More Answers (1)

Sangeetha Jayaprakash
Sangeetha Jayaprakash on 22 May 2017
Edited: dpb on 22 May 2017
I assume that you are trying to get the ticklabels of the X axis for the attached boxplot. You can get the current axes, and then get the Xticklabels from that handle as shown:
ax = gca;
ticks = ax.Xticklabels
For more information on "gca" function, refer this link:
ERRATUM
Use
ticks = ax.Xticklabel % plural name been removed for singular form
Or, beginning w/ R2016b, there's a new function xticklabels
doc xticklabels % for details if late-enough version
  4 Comments
dpb
dpb on 26 May 2017
See new Answer that actually addresses original problem...

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