altering a 2d plot for a time series

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Richard
Richard 2012-3-14
This is a rather basic question but here we go. I'm plotting a time series of data, and was wondering if instead of having dates on the xaxis is it possible for the xaxis to be an arrow (does that make sense?). So basically shows that as the xaxis continues to the right, time also increases.

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回答（2 个）

Wayne King
Wayne King 2012-3-14
You can certainly add an arrow using text()
plot(randn(100,1));
set(gca,'xtick',[]);
text(46,-3.5,'\rightarrow','fontsize',20);
Obviously, you can adjust the position and size of arrow as you wish.
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Richard
Richard 2012-3-14
So, is that to say that there is no built in function to plot on this type of axis? This doesnt seem to works very well,
text(length(time),min(Data),'\rightarrow','fontsize',20);
ylim([min(Data) max(Data)])
It still doesn't generate an arrow exactly on the xaxis, it is slightly offset.

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Wayne King
Wayne King 2012-3-14
I think you should use the Xlim and Ylim values of the current axis to place your arror
x = randn(100,1);
plot(x);
ax = gca;
set(gca,'xtick',[]);
ylims = get(ax,'Ylim');
xlims = get(ax,'Xlim');
text(xlims(2),ylims(1),'\rightarrow','fontsize',20);

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