Replace matrix with the other random matrix.

2 次查看（过去 30 天）
Andi Tarigan
Andi Tarigan 2014-1-27
编辑： Walter Roberson 2016-4-16
Hello,
Here I have matrix vector 0 and 1 with size (1024, 1), and I have the other matrix from random matrix with value between 0 and 1, with a seed (rng function), so the output of this matrix not change, and length this matrix dependent how much vector 0 and 1 in the first matrix. And I want to replace the first matrix (1024, 1) with the second matrix, but must equal with the vector, 0 or 1. And the output matrix which changed have the value random (between 0 until 1) with size (1024, 1). How can I make it? Thank you.
  2 个评论
Amit
Amit 2014-1-27
The question is a bit confusing. Can you rephrase it with an example (probably take the matrix as size (5,1))
Andi Tarigan
Andi Tarigan 2014-1-27
编辑：Walter Roberson 2016-4-16
arnold_new = reshape(arnold, 1024, 1); % Make the matrix to 1 column
find_0 = find(arnold_new == 0); % Total bit 0
find_1 = find(arnold_new == 1); % Total bit 1
size_0 = size(find_0);
size_1 = size(find_1);
% =========================================================================
% Program to generate pseudorandom bit 0
% =========================================================================
rng(0) % Seed for bit 0
null = rand(size_0); % Total random value bit 0
null_new = reshape(nol, length(null_new), 1); % Make matrix to 1 column
% =========================================================================
% Program to generate pseudorandom bit 0
% =========================================================================
rng(1)% Seed for bit 1
one = rand(size_1); % Total random value bit 0
one_new = reshape(one, length(one_new), 1); % Make matrix to 1 column
And how i can changed the arnold_new matrix with the pseudorandom sequence in null_new and one_new? So that output is random, not bit 0 or 1 as arnold_new.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Amit
Amit 2014-1-27
编辑：Amit 2014-1-27
How about simply:
rng(0);
arnold_new_null = rand(size(arnold_new));
rng(1);
arnold_new_ones = rand(size(arnold_new));
arnold_new(arnold_new == 1) = arnold_new_ones(arnold_new == 1);
arnold_new(arnold_new == 0) = arnold_new_nulls(arnold_new == 0);
  7 个评论
显示 5更早的评论
Amit
Amit 2014-1-27
rng(0);
arnold_new_null = rand(1024,1);
rng(1);
arnold_new_one = rand(1024,1);

请先登录，再进行评论。

更多回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2014-1-27
Maybe you want this:
a=randi([0 1],1,10);
s=rng;
b=rand(1,10);
out=a.*b
  3 个评论
显示 1更早的评论
Azzi Abdelmalek
Azzi Abdelmalek 2014-1-27
a=randi([0 1],1,10);
s1=rng;
b1=rand(1,10);
s2=rng;
b2=rand(1,10);
out=zeros(size(a))
out(a==1)=b1(a==1)
out(a==0)=b2(a==0)

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by