Matrix multiply with a function
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i have two matrix with same columns and rows(matrix a and b). a is depth and b is land use index. each index value has a different equation and it is function of depth. i need to create a third matrix by substituting depth value to the functions.
depth d={2 3 4;7 2 5;1 2 5}
land use l={a b c;b c a;c b a}
a=0.5*depth+3
b=0.78*depth+4
c=0.1*depth+8
I really appreciate your cooperation. Thank you
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Andrei Bobrov
2019 年 10 月 22 日
編集済み: Andrei Bobrov
2019 年 10 月 22 日
i = [1:3;2,3,1;3:-1:1];
k = [.5;.78;.1];
f = [3;4;8];
d=[2 3 4;7 2 5;1 2 5];
l = k(i).*d + f(i);
or
l = kron(k(i),d) + kron(ones(size(i)),f(i));
3 件のコメント
Rik
2019 年 10 月 22 日
Then you need to load them as variables. I'm sure Google will be able to supply you with dozens if not hundreds of examples of how to read data from Excel to Matlab.
Andrei Bobrov
2019 年 10 月 22 日
@Indikatop: Please attach your txt or xlsx file here and we show how it do.
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