How to add gray bands in a plot

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I have a figure with multiple subplot with the same time series, I would like to add a gray band on the x axis every year, do you have any idea?
  2 个评论
Jan
Jan 2023-2-7
Can you draw the "gray band" manually, such that it gets clear what "every year" exactly means? Maybe you want to set 'XGrid' to 'on' in each plot?
Tiziana Lazzarina Zendrini
Yes, sorry for the unclear explanation, I would like to do something like this for each subplot and not just to set the XGrid on:
thank you very much for your reply.

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回答(1 个)

DGM
DGM 2023-2-7
编辑:DGM 2023-2-7
Here's my interpretation. I'm assuming you're using datetime for the xdata, so
% some fake data
t1 = datetime(2013,11,1,8,0,0);
t2 = datetime(2020,11,5,8,0,0);
t = t1:caldays(5):t2;
y = rand(1,numel(t))+10;
% specify desired yaxis range
yaxrange = [9 12];
% plot the area under a square wave
yrbk = mod(year(t),2); % every other year
yrbk = abs(diff(yaxrange))*yrbk+min(yaxrange); % rescale on y
area(t,yrbk,min(yaxrange),'facecolor',0.9*[1 1 1],'edgecolor','none')
% plot the data on top of it
hold on
plot(t,y)
ylim(yaxrange)

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