text with arrow pointer

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Tasneem Abed
Tasneem Abed 2023-7-25
评论： Cris LaPierre 2023-7-25
i need help with
how to draw an arrow to point in a specific direction

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回答（1 个）

Cris LaPierre
Cris LaPierre 2023-7-25
  5 个评论
显示 3更早的评论
Walter Roberson
Walter Roberson 2023-7-25
Be careful, the positions for annotation() can only be absolute coordinates or coordinates normalized to the figure. There is no way to specify data units.
There are File Exchange contributions to make it easier to use data units
Cris LaPierre
Cris LaPierre 2023-7-25
Ran in:
Here's an example of one such program on the File Exchange
% add an annotation pointing to the 5th data point
x = 0:24;
y = randi(6000,size(x));
plot(x,y)
S = sprintf("A2="+y(5));
xa = [-1 0]+x(5);
ya = [-1000 0]+y(5);
[xaf,yaf] = ds2nfu(xa,ya);
annotation('textarrow', xaf, yaf,'String',S)

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