How can I find non-zero without Empty matrix: 1-by-0 in my code.

k=5;

Tk=(rand(1,k)*64); 

Tk=sort(Tk); 

Ck=randn(1,k);

h_DSseisu = h_DS * 10000; %少数点を整数化

Tk_DS= find((abs(h_DSiidkukeiseisu))>=1); %Tk_DS%浮動小数点の丸め誤差が原因を防ぐEmpty matrix: 1-by-0

Ck_DS=h_DS(Tk_DS); %Ck_DS

How can I find non-zero without Empty matrix: 1-by-0

[KSSV]

what is h_DS?

[Walter Roberson]

What is the difference between this question and your earlier http://www.mathworks.com/matlabcentral/answers/280108-empty-matrix-1-by-0-mse other than that this question has more of your code?