change size of matrix without changing number of row and column

2 次查看（过去 30 天）
fatema saba
fatema saba 2014-12-23
评论： fatema saba 2014-12-23
Hi I have 4 matrices (A, B, C and D)like my figure:
The first row and column in matrix B, C and D show number of original row and column.
I want to convert matrix B to matrix B' and matrix C to matrix C' and matrix E to matrix E' like following figure:
is there any clue please?

请先登录，再回答此问题。

采纳的回答

Andrei Bobrov
Andrei Bobrov 2014-12-23
B = [0 6 7;6 1 0;7 0 1];
C = [0 1 3 5:7;2 0 0 1 0 0; 3 1 0 0 1 0; 8 0 1 0 0 1; 9 0 0 0 0 1];
E = [0 3:7; 8 0 0 1 0 0;9 1 1 0 1 0; 10 0 1 1 1 0; 11 0 1 1 1 1];
[ib,jb] = find(B(2:end,2:end))
[ic,jc] = find(C(2:end,2:end))
[ie,je] = find(E(2:end,2:end))
s = size(A);
P = [(0:11)',[1:7;zeros(s-1)]];
Bt = P;
Bt(sub2ind(s,B(ib+1,1)+1,B(1,jb+1)'+1)) = 1
Ct = P;
Ct(sub2ind(s,C(ic+1,1)+1,C(1,jc+1)'+1)) = 1
Et = P;
Et(sub2ind(s,E(ie+1,1)+1,E(1,je+1)'+1)) = 1
  1 个评论
fatema saba
fatema saba 2014-12-23
Thank you very much. It was very beautiful. and also complicated for me. It took hours that I understood it.
I had written something like that But I couldent complete it:
i
columnE=[4 5 6 7 8]
rowE=[9 10 11 12]
q=columnE(1,1)
w=zeros(8,12)
[m,n]=size(w)
for i=1:m*n
for j=1:m
if i==q && j==rowE
w(i,[q+j(n)])=[1]
else
w(i)=[0]
end
end
end
[w]

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Numeric Types 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