add data points to a graph

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maryam
maryam 2013-9-25
回答： harsh raval 2021-10-18
hi i have a matlab figure, and i'd like to highlight some important points on it, could anybody help me? tnx in advance

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采纳的回答

David Sanchez
David Sanchez 2013-9-25
Select the "Data Cursor" on the figure window and click on the point you want.
Hold "alt" to multiple selection.

更多回答（2 个）

Youssef Khmou
Youssef Khmou 2013-9-25
编辑：Youssef Khmou 2013-9-25
you have to know the xy coordinates of those points to mark them . suppose i have a graph Y(X) :
X=1:10;Y=randn(1,10);
plot(X,Y), hold on,
Marked=[X(2) Y(2); X(4) Y(4)];
plot(Marked(:,1),Marked(:,2),'o');
  1 个评论
maryam
maryam 2013-9-26
tnx for ur answer,but i dont know the xy coordinates,just a figure.

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harsh raval
harsh raval 2021-10-18
folowing is an example where i have highlited a point with red airstrike
function m = plot_cos(y, t)
plot(t,y,'b--')
hold on
[iminy,idy]=min(y);
plot(idy,iminy,'r*')
hold off
m=min(y);
end

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