How to add gray bands in a plot
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Tiziana Lazzarina Zendrini
el 7 de Feb. de 2023
Comentada: Tiziana Lazzarina Zendrini
el 8 de Feb. de 2023
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 comentarios
Jan
el 7 de Feb. de 2023
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?
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DGM
el 7 de Feb. de 2023
Editada: DGM
el 7 de Feb. de 2023
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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