How to extract brushed data from a surf plot in the form of a matrix?

Hi all,

I have 2736x1920 matrix from which I create a surf plot, I then brush some values from the plot and extract them in the following manner:

 Handle = surf(Z);
 h = brush;
 set(h,'Enable','on');
 brushed = logical(get(Handle, 'BrushData'));

'brushed' is a 2736x1920 logical array. I want to extract all the brushed values from 'Z' into a new matrix. but when I do:

    brushed_val = Z(brushed);

I get a column vector.

Any ideas how can I get a submatrix of 'Z' that contains the 'trues' that are given in 'brushed'?

thanks.