BoxChart box position doesnt match xaxis label when 'groupbycolor'

Question

Danylyna Shpakivska 2022-7-21

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1765055-boxchart-box-position-doesnt-match-xaxis-label-when-groupbycolor

编辑： Adam Danz 2022-11-17

采纳的回答： Adam Danz

how to align xaxes label when using groupbycolor' option in boxchart?

as you can see on the web example xaxes isnt alignied to each boxplot.

https://es.mathworks.com/help/matlab/ref/boxchart.html#mw_5155587c-0e81-466d-adc7-1dc43c566e72_sep_shared-Orientation

the same appens in my boxchart.

how to solve it? thanks in advance

2 个评论
显示无隐藏无

dpb 2022-7-21

It's centered on the group; you don't have both colors in all groupings so it's an optical delusion at RHS of example...yours has only one for all groupings.

Danylyna Shpakivska 2022-7-21

So the problem is that i dont have de same number of categories on xgroup data than on cgroupdata?

Anyway, there is somo way to adjust the xaxis manually? for example, getting the position of each boxchar? how can I access to that?

Thanks

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Adam Danz 2022-7-21

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1765055-boxchart-box-position-doesnt-match-xaxis-label-when-groupbycolor#answer_1012320

The example you shared from the documentation (link) uses grouped data. Groups are centered around the x-ticks. If you are missing members of group, the missing groups will appear as empty space.

If I add vertical grid lines and expand the image, this is easier to see.

I have a feeling you're also using grouped data to control the colors of your boxplots and your missing groups appear as empty space.

4 个评论
显示 2更早的评论隐藏 2更早的评论

Danylyna Shpakivska 2022-11-17

Y=[T.number_events];

xgroupdata = T.roi_label.*T.roi_hemis; % These are my xtick categories ("labels")

figure

set(gcf, 'Position', [380,258,1250,500])

plot_alpha=boxchart(xgroupdata,Y,'Notch','on','GroupByColor',categorical(T.group_subj));

% "T.group_subj" is the variable that groups by color.

legend

title(sprintf('%s Events',freq_band))

xlabel('Groups per ROI')

ylabel('Number of Events (Median)')

---------------------------------

The variable to group by color (legend) should be provided as other entry to the boxchart function. I hope it helps you.

Adam Danz 2022-11-17

编辑：Adam Danz 2022-11-17

@Alejandro Nogueron Aramburu, follow this example from the documentation. Group by cgroupdata. You can ignore the last line of code in the example - that line shows how to change a box color.

https://www.mathworks.com/help/matlab/ref/boxchart.html#mw_bcd4f1ca-7b62-453e-ae5e-3c1a78f77b60

请先登录，再进行评论。