Tracking boxplot x axis labels

Question

Eugenio Daviso 2017-5-18

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https://ww2.mathworks.cn/matlabcentral/answers/340898-tracking-boxplot-x-axis-labels

评论： dpb 2017-5-26

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!

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dpb 2017-5-18

Don't follow the problem; provide a working example that illustrates what you have and what you're trying to accomplish.

Eugenio Daviso 2017-5-19

编辑：Eugenio Daviso 2017-5-19

test_for_Matlab_MatLab.jpg

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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Answer 1

dpb 2017-5-26

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https://ww2.mathworks.cn/matlabcentral/answers/340898-tracking-boxplot-x-axis-labels#answer_268552

在 MATLAB Online 中打开

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'
>>

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Eugenio Daviso 2017-5-26

Thank you! THAT is what I needed!!

dpb 2017-5-26

It does help to read the original question sometimes! :)

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Answer 2

Sangeetha Jayaprakash 2017-5-22

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/340898-tracking-boxplot-x-axis-labels#answer_267968

编辑：dpb 2017-5-22

在 MATLAB Online 中打开

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:

http://www.mathworks.com/help/matlab/ref/gca.html

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

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Eugenio Daviso 2017-5-25

编辑：Eugenio Daviso 2017-5-25

test_boxplot.fig

It works for a plot but it does not work on boxplots. I am attaching the figure so you can see that when I recall the x label property (per your instruction) the output is an empty matrix.