Learn together matlab-matlab function study notes 13
13_1 function return value
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Reference
https://blog.csdn.net/qq_36556893/article/details/79323389#commentBox
https://blog.csdn.net/qq_36556893/article/details/79326325
The function returns a value
- The return value does not have to use the return statement, but need to return directly to the variable or function matrix written on the back
- Return Value function / Matrix = The function returns the file name (parameter 1, parameter 2, 3 ... Parameter Parameter n)
function x=init_x(x,m,n)
for i=1:m
for j=1:n
x(i,j)=randsample(20,1);
end
end
This example represents the incoming x x, m, n by the values of the parameters, and then return after the change
Examples
Now xx matrix elements need to be assigned to a completely new matrix yy, i.e. replication, specific code as follows:
The main function execute_1.m
clc
clear
%定义xx,yy矩阵大小
m=3;
n=1;
xx=zeros(m,n);
yy=zeros(m,n);
%初始化xx
xx=init_x(xx,m,n);
%将xx矩阵赋值给yy
yy=function_1(xx,yy,m,n
Xx initialization function init_x.m
function x=init_x(x,m,n)
for i=1:m
for j=1:n
x(i,j)=randsample(20,1);
end
end
Mutator function_1.m
function y=function_1(x,y,m,n)
for i=1:m
for j=1:n
y(i,j)=x(i,j);
end
end
Screenshot results
A plurality of function return value
function [Return value 1/1 returns a matrix, returns the value 2/2 returns a matrix, ..., return value n / return matrix n] = the function of the file name (parameter 1, parameter 2, ..., parameter n)
Examples
Xx yy matrix and the matrix elements of the entire exchange, and a new matrix is obtained both after adding zz
The main function execute_2.m
clc
clear
%定义xx,yy,zz矩阵大小
m=3;
n=1;
xx=zeros(m,n);
yy=zeros(m,n);
zz=zeros(m,n);
%初始化xx,yy
xx=init_x(xx,m,n)
yy=init_y(yy,m,n)
%交换xx矩阵和yy矩阵的元素,并求出xx和yy相加的新矩阵zz
[xx,yy,zz]=function_2(xx,yy,zz,m,n)
Init_x.m initialization function of xx and yy, init_y.m
function x=init_x(x,m,n)
for i=1:m
for j=1:n
x(i,j)=randsample(20,1);
end
end
function y=init_y(y,m,n)
for i=1:m
for j=1:n
y(i,j)=randsample(20,1);
end
end
Switching matrix elements and an adding function function_2.m
function [x,y,z]=function_2(x,y,z,m,n)
tempx=x;%中间变量
%x和y交换
for i=1:m
for j=1:n
x(i,j)=y(i,j);
y(i,j)=tempx(i,j);
end
end
%x加上y
for i=1:m
for j=1:n
z(i,j)=x(i,j)+y(i,j);
end
end