基于两个向量MATLAB构造此矩阵

问题描述

我确实有2个向量，我想基于r和c构造一个矩阵

I do have 2 vectors and i want to construct a matrix based onr and c

r =

 1
 2
 4
 6
 8

c =

 2
 4
 6
 8
10

我想构造一个矩阵A使得A(1,2)= A(2,4)= A(4,6)= A(6,8)= A(8,10)= 1其他元素0.

i want to construct a matrix A such that A(1,2)=A(2,4)=A(4,6)=A(6,8)=A(8,10)=1 other elements 0.

请帮助

推荐答案

您可以将构造函数用于稀疏矩阵:

You could use the constructor for sparse matrices:

full(sparse(r,c,1))

顺便说一句，

，如果要将其应用于具有多个零的大型矩阵，请保留稀疏的1.对于具有多个零的矩阵，它使用的内存要少得多:

by the way, if you want to apply this to large matrices with many zeros, stay with the sparse one. It uses much less memory for matrices with many zeros:

sparse(r,c,1)

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