tri.m

这是伯克里wavelet transforms一书中的例子的代码

% tri. returns t for 0<t<1. 0 for t<0 and 1 for t>1.
%It is used by cwtex to compute the CWT in  Example 1 of 
%Chapter 1.
%
%Author: Raghuveer M. Rao
%Copyright (c) 1998 by Addison Wesley Longman, Inc.
%
 
function x=tri(t)
if t<0
x=0;
elseif t>1
x=1;
else
x=t;
end