How can I set automatically the textarrow position on a graph?

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Lorenzo
Lorenzo 2013-2-20
I would like to place the top of the arrow in a text-arrow annotation automatically on a plot, taking as reference a specific point of a line

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回答（2 个）

Oleg Komarov
Oleg Komarov 2013-2-20
编辑：Oleg Komarov 2013-2-20
You will find this utility very useful: http://www.mathworks.co.uk/matlabcentral/fileexchange/10656-data-space-to-figure-units-conversion
It converts data units to normalized units which are required by the annotation() function.
plot(1:10);
% tail
[xt yt] = ds2nfu(3, 6);
% head
[xh yh] = ds2nfu(5, 5);
a = annotation('textarrow', [xt xh],[yt yh], 'String' , 'Straight Line');
Azzi Abdelmalek
Azzi Abdelmalek 2013-2-20
编辑：Azzi Abdelmalek 2013-2-20
annotation('textarrow',[x0,x1],[y0,y1],'String',yourtext);

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