How to plot multiple Loops and draw data lables for legend
显示 更早的评论
Hi
I want to plot return value C and add legend according to iteration for below code
A = [1:4];
B = [1:4];
C = zeros(size(A,2),size(B,2));
for i = 1:length(A)
for j = 1:length(B)
C(i,j) = power(A(i),B(j));
end
end
3 个评论
KSSV
2021-9-24
Loop not required:
C = (A').^B ;
How would like to add legend? Do you have any demo picture?
Life is Wonderful
2021-9-24
编辑：Life is Wonderful
2021-9-24
@KSSV, Thanks
C = (A').^B ; % It could be ( Not Always) dangerous and may result in Matrix dim mismatch
I welcome your plot proposal
Life is Wonderful
2021-9-24
采纳的回答
Hi,
I understood that you want to
1) plot every row of matrix C against matrix B
2) And label every row of matrix C individually using legend
This can be achieved by DisplayName property of the plot as shown below
A = [1:4];
B = [1:4];
C = zeros(size(A,2),size(B,2));
for i = 1:length(A)
for j = 1:length(B)
C(i,j) = power(A(i),B(j));
end
plot(B,C(i,:), 'DisplayName', "row - "+num2str(i));
% The DisplayName property is set to the row number of matrix C
% We can Customize the fourth argument above
if i==1
hold on % holds the axes such that it contains previous plots and new plots
end
end
hold off % removes the "hold on" constraint
xlabel('Matrix-B');
ylabel('Matrix-C');
legend
5 个评论
Updating the code provided before
A = [1:4];
B = [1:4];
C = zeros(size(A,2),size(B,2));
for i = 1:length(A)
for j = 1:length(B)
C(i,j) = power(A(i),B(j));
text(B(j),C(i,j),"bas-"+num2str(A(i))+",exp-"+num2str(B(j)));
%adds label to point having x-coordinate as first argument,
%y-coordinate as second argument and
%text to be displayed as third argument
if i==1 && j==1
hold on% holds the axes such that it contains previous plots and new plots
end
end
plot(B,C(i,:),'*-','DisplayName', "row - "+num2str(i));
% The DisplayName property is set to the row number of matrix C
% We can Customize the fourth argument above
end
hold off % removes the "hold on" constraint
xlabel('Matrix-B');
ylabel('Matrix-C');
legend
Life is Wonderful
2021-9-28
Shanmukha Voggu
2021-9-28
Life is Wonderful
2021-9-28
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