Create array based on a loop setting a variable
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Hi, I hope I am able to explain my situation well enough to receive help. I am just starting with Matlab and basically a complete newbie.
I imported a table with two columns and 104 rows from an Excel sheet. It contains measured data of the variables I and U, so 104 values for I and 104 values for U.
To work with this table (called "A), I created two arrays:
I=A(1:104,1);
U=A(1:104,2);
So I and U are two arrays with the size of 104x1.
Now I need to multiply each row of I with each row of U and ideally get another array with the size of 104x1. To multiply each row individually, I created a small loop
for i=1:104
P=I(i)*U(i);
end
This works, but to my understanding, it just sets the variable P to the last result of the multiplication (of row 104).
I need to save every result of each multiplication to an array, but I can't find a function to do this. Any help is appreciated, thank you in advance!
采纳的回答
Walter Roberson
2022-3-18
If you want corresponding rows, then you can simply use
P = I .* U;
with no loops needed.
This syntax multiplies "corresponding" positions in the arrays.
2 个评论
Peter
2022-3-18
x = 1 : 10;
y = randi(65536, size(x));
ax = gca;
plot(ax, x, y);
ax.YAxis.Exponent = 3;
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