I want to draw an arrow in one of my subplots at a specific point to mark a zero-crossing. But after I have converted the x and y positions from data space coordiantes to normalized figure space coordinates the arrow is displayed in the figure itself and not inside the subplot were I want it. It seems like MATLAB will only accept a figure handle and not an axis handle for the annotation command. Can anyone tell me wether it is possible at all to draw arrows in a subplot??? Is there an alternative option (other than Paint)??
I've simplified my code to:
subplot(4,2,5);hold onplot([xlim(1) xlim(2)],[0 0],'Color',[0.9 0.9 0.9])plot(xvalues,yvalues)xlim([xlim(1) xlim(2)])% Transforming x and y values from data space to figure space
axlim = axis(gca);arrowx = ([zero-cross zero-cross]-axlim(1))./(axlim(2)-axlim(1));arrowy = ([-0.1 0]-axlim(3))./(axlim(4)-axlim(3));% Plotting the arrow
annotation('arrow',arrowx,arrowy);
Thanks, Sabrina
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