how to make group by extracting data?

Hello,

e = [-9:3:9];

CM =

0.41 0.39 0.37 ....

0.32 0.30 0.29 ...

0.24 0.22 0.20 ...

0.15 0.13 0.12 ....

0.06 0.05 0.03 ...

-0.01 -0.03 -0.05 ...

-0.10 -0.12 -0.13 ...

CM is 7*20 double,

and

ele1 = interp1(CM(:,1),e,0);

ele2 = interp1(CM(:,2),e,0);

....

ele20 = interp1(CM(:,3),e,0);

ele = [ele1 ele2 ..... ele20]

This method have to write each group, so I want to make it more simply

(I just want to result 'ele = [ele1 ele2 ... ele20]', I don't need to enumerate all components)

Thanks for reading.

Answer 1

[Star Strider]

I am not certain what you want to do. One problem is that the elements of ‘CM’ appear to be outside the range of (-9,9). In any event, the first argument must be a vector. If you want to do the interpolation in the order of arguments you chose, a loop is the only option:

CM = sort(randi([-9 9], 7, 20)+rand(7,20),2)/10;                        % Create ‘CM’
e = [-9:3:9];
for k = 1:size(CM,2)
    ele(k) = interp1(CM(:,k),e,0, 'linear','extrap');
end

.

[hj lee]

Thank you very much!

[Star Strider]

As always, my pleasure!