How to draw vertical lines in between categorical x-axis ticks

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HW
HW 2018-1-4
评论： Jos (10584) 2018-1-6
I have some data that I display using the plot function, with categorical labels on the x-axis. I would like to draw vertical lines in between some of the x-axis tick marks, but not all. I would appreciate suggestions on how to do this. I'm using Matlab 2017a.
I can easily draw a vertical line exactly on the x-axis tick marks, using something like this:
plot([xNames(5), xNames(5)],[0 1],'k')
where xNames is my array with the categorical names. But I would like to adjust this so that a vertical line is drawn between, e.g., xNames(5) and xNames(6).

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采纳的回答

HW
HW 2018-1-6
I figured it out; the key is to not plot with categorical axis too early. I did something like
plot(1:34, 2*[1:34],'ko')
set(gca,'XTick',1:34)
hold on, plot([3.5 3.5],[-0.5 0.5],'k')
hold on, plot([6.5 6.5],[-0.5 0.5],'k')
hold on, plot([20.5 20.5],[-0.5 0.5],'k')
hold on, plot([30.5 30.5],[-0.5 0.5],'k')
set(gca,'XTickLabel',string(xNames))
xtickangle(45)
  1 个评论
Jos (10584)
Jos (10584) 2018-1-6
the repeated hold on and plot(..) commands can be replaced by using
gridxy([3.5 6.5 20.5 30.5]), 'color', 'k')
(see link in my answer)

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更多回答（1 个）

Jos (10584)
Jos (10584) 2018-1-4
编辑：Jos (10584) 2018-1-4
Use the average?
v = (xNames(5)+ xNames(6))/2
plot([v v], ...)
You might also be interested in various utilities on the File Exchange that can plot vertical and horizontal grid lines at specific places, like my own GRIDXY
https://uk.mathworks.com/matlabcentral/fileexchange/9973-gridxy
  3 个评论
显示 1更早的评论
HW
HW 2018-1-5
I really would like to have the line to be drawn between two tick marks. I would prefer to not add anything visual to the x-axis, even additional tick marks.

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