How to increment matrix row only inside a nested for loop?

iB
2019 11 6
1 个回答
更新时间：2019 11 7
5 次查看（30 天）

0 个投票

for i= 1:10{
for j= 1:5{
x = i*j;
mat
}}
matrix's row number index row wise should increment by 1
save this x value in mat matrix's row wise(like 1st row,2nd row,...,50th row).
Please help

4 个评论
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Ruger28
Ruger28 2019-11-6
We need more info here to help at all. This also just looks like a homework problem that you did not attempt to do.
Bob Thompson
Bob Thompson 2019-11-6
Are you adapting this code from a different program? This is not Matlab syntax.
In order to save the value from a loop into an array you need to assign the index. Something like the following:
for i = 1:10{
for j = 1:5{
x(i,j) = i*j;
mat
}}
iB
iB 2019-11-7
for i =1 and j = 1 value should saved at row number 1 ; for i = 1 j = 5 value will be saved at row 5 and like that for i = 2 j = 1(in next i value increment) will be saved at row 6 then for i=2 j=2 at row 7 of matrix 'mat' like that till 50 (i *j)
i is 1 and j is 1 to 5
1 * 1 at row 1; 1*2 at row 2; 1*3 at row 3; 1*4 at row 4; 1*5 at row 5
now i incremented to 2 and j is 1 to 5 again so
2*1 at row 6; 2*2 at 7; 2*3 at 8; 2*4 at 9; 2*5 at 10
like that till i = 10 and j is 1 to 5
10*1 at 46; 10*2 at 47; 10*3 at 48; 10*4 at 49; 10*5 at 50
iB
iB 2019-11-7
for i =1 and j = 1 value should saved at row number 1 ; for i = 1 j = 5 value will be saved at row 5 and like that for i = 2 j = 1(in next i value increment) will be saved at row 6 then for i=2 j=2 at row 7 of matrix 'mat' like that till 50 (i *j)
i is 1 and j is 1 to 5
1 * 1 at row 1; 1*2 at row 2; 1*3 at row 3; 1*4 at row 4; 1*5 at row 5
now i incremented to 2 and j is 1 to 5 again so
2*1 at row 6; 2*2 at 7; 2*3 at 8; 2*4 at 9; 2*5 at 10
like that till i = 10 and j is 1 to 5
10*1 at 46; 10*2 at 47; 10*3 at 48; 10*4 at 49; 10*5 at 50

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回答（1 个）

Bob Thompson
Bob Thompson 2019-11-7

0 个投票

The solution is indexing. You can do math in your index if you need to.
x((i-1)*5+j) = i*j;

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iB
iB
2019-11-6

回答：

Bob Thompson
Bob Thompson
2019-11-7

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