how to plot group boxplot

a = readtable('Sample data2.xlsx')

Warning: Column headers from the file were modified to make them valid MATLAB identifiers before creating variable names for the table. The original column headers are saved in the VariableDescriptions property.
Set 'VariableNamingRule' to 'preserve' to use the original column headers as table variable names.

a = 166×15 table
    INSITU     ERA5     NCAR_NCEP    MERRA2    CERES     INSITU_1    ERA5_1    NCAR_NCEP_1    MERRA2_1    CERES_1    INSITU_2    ERA5_2    NCAR_NCEP_2    MERRA2_2    CERES_2
    ______    ______    _________    ______    ______    ________    ______    ___________    ________    _______    ________    ______    ___________    ________    _______

    83.649    225.17     129.05      93.975     112.7     115.93     182.09      155.78        114.85     125.85      83.649     225.17      129.05        93.975      112.7 
    98.304    227.49     155.95       102.3    130.35     110.41     163.31      142.32        125.62      125.1      98.304     227.49      155.95         102.3     130.35 
    107.76    213.89     160.93         100    129.88      108.8     180.38      144.28        126.83     131.97      107.76     213.89      160.93           100     129.88 
    93.286    207.96      124.7      71.175    97.725     112.49     194.44      143.95        122.53     135.55      115.93     182.09      155.78        114.85     125.85 
    78.649    191.09     106.72        71.1    82.875     108.51     204.66      140.53          91.6     124.85      110.41     163.31      142.32        125.62      125.1 
    74.113    197.77     107.03       81.85    79.225     116.82     187.62      153.32         121.1     125.05       108.8     180.38      144.28        126.83     131.97 
    82.736    206.86     119.78       86.15     104.4     108.85      164.5      147.22         126.2     128.03      112.49     194.44      143.95        122.53     135.55 
     87.11    222.08     140.85      96.475    111.28      108.6     152.88      142.62        128.82     127.83      108.51     204.66      140.53          91.6     124.85 
    108.25    213.98      149.2      101.62    121.17     106.77     191.26      138.97        116.67     144.57      93.286     207.96       124.7        71.175     97.725 
    118.93    207.61     156.57      111.33    122.58     107.28     215.08      139.47            92      122.2      78.649     191.09      106.72          71.1     82.875 
    87.996    208.39     124.12        74.4    90.825      122.2      187.5      157.25         109.7     124.67      74.113     197.77      107.03         81.85     79.225 
    74.457    190.97     104.28      72.925    79.475      114.8     181.57      153.65        130.78     123.08      82.736     206.86      119.78         86.15      104.4 
    72.081    193.92     106.85       80.25      93.7      105.6      179.8      137.28        124.33     134.12       87.11     222.08      140.85        96.475     111.28 
    85.703    204.86     123.97      85.325     92.45     111.72     193.69      141.15        114.97     145.35      108.25     213.98       149.2        101.62     121.17 
    92.277     217.1      145.7      100.25        98     100.54      198.7      130.72        91.875      127.3      118.93     207.61      156.57        111.33     122.58 
    103.37    212.33     149.95        96.2    121.58     118.61     186.02      152.78        119.62      120.8      116.82     187.62      153.32         121.1     125.05 

b = 'samdig.png'

b = 'samdig.png'

imshow(b)

I want matlab code to plot the boxplot of above data to look the above diagram but in 'notched form'. Kindly help me out. Thanks.

[Adam Danz]

@Ojo Olusola,

In the figure, I see 3 groups (dry/wet/Annual) and 5 subgroups (defined by legend). It's not clear how the table you shared should be divided into groups and subgroups.

Ankit's answer below shows you some good starting points to get you started.

[Ojo Olusola]

the headings with subscript are dry season data as group 1

Those with subscript 1 are wet season data as group 2

Those with subscript 2 are annual data as group 3

the headings, Insitu, ERA5, NCAR/NCEP, MERRA2 and CERES are 5 subgroups to be used as legends.

[Adam Danz]

I don't understand that. Please list the headings that appear in the table that belong to each group.

[Ankit]

This is what I think Ojo Olusola means

INSITU, ERA5, NCAR_NCEP, MERRA2, CERES - dry

INSITU_1, ERA5_1, NCAR_NCEP_1, MERRA2_1, CERES_1 - wet

INSITU_2, ERA5_2, NCAR_NCEP_2, MERRA2_2, CERES_2 - Annual

[Ojo Olusola]

Yes, that is exactly what I mean.

Answer 1

[Ankit]

Have a look over the below link. There are sufficient infos available on MATLAB Website

Also you can find some ready made function shared on MATLAB File Exchange

boxplotGroup - File Exchange - MATLAB Central (mathworks.com)

boxplot - File Exchange - MATLAB Central (mathworks.com)

MATLAB App: BoxPlotPro - File Exchange - MATLAB Central (mathworks.com)

How do you create a grouped boxplot with categorical variables on the x-axis. - (mathworks.com)

Info: 'boxplot' requires Statistics and Machine Learning Toolbox.

Below submission doesn't required any Toolbox.

Boxplot: boxplotx without toolboxes - File Exchange - MATLAB Central (mathworks.com)

[Ojo Olusola]

I am not satisfied with this answer. Kindly use the attached data. Thanks

[Adam Danz]

To add to Ankit's list,

• boxplot2
• Alternative box plot

[Ankit]

@Ojo Olusola you need to try the above mentioned functions/links by me and Adam by yourself. In case you face problem then we can help further..