Error using text() function: "Subscript indices must either be real positive integers or logicals."

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1 个投票

Hi,

I am plotting a tree using treeplot() and I would like to put some text on the nodes with the treelayout() and text() functions. I get the error when trying to plot the text on the current figure.

This is the code:

t=[0,1,1,2,2] ; [x,y]=treelayout(t) ; treeplot(t) ; text(x(1),y(1),'root')

And this is the error I get:

Subscript indices must either be real positive integers or logicals.

I have tried it with additional parameters without success and I get the same error when using the text() function in any other context. For instances:

figure ; hold on ; plot(rand(1,10),rand(1,10),'ro') ; text(0.5,0.5,'center')

I am using MATLAB 8.2.0.701 (R2013b) for Ubuntu, but I have tried it on the Windows version and I got the same error.

Any suggestion?!