selecting values between vectors and plot the values

Hi,

I have 4 vectors which are unsorted. All have all same length of 360:

Ax, Bx - Values are real numbes between 0 to 360. Values are increasing / decreasing and with modulu 360.

Ay,By - corrolated to Ax, Bx. real numbes between 0 to 180.

(Best was to describe thos vectors are as single sine with phase shift and/or reversal (i.e. -sin(x) )).

I need to:

1. find max between Ay, By at given point of x vectors.
2. plot the max value with appropriate value from Ax or Bx.

What I've though is:

1. sort Ax, Bx and to find the original order (sorting will provide me the initial value which is close to 0.
2. based on the indexes of the sorting, find Y=max (Ay(idx_a), By(idx_b))
3. running in for loop in order to find whether the Y(i) is related to Ay to or By and set X from Ax or Bx.
4. plot(X,Y)

I think that this is not so elegant solution.

Would be glad to have a proposal for a more elegant one.

Answer 1

[dpb]

isA=(Ax>Bx);
ABx=Bx; ABx(isA)=Ax(isA);
plot(ABx,max(Ay,By))

[michael]

shouldn't ABx(isA)=Bx(isA); be changed to ABx(isA)=Ax(isA);

[dpb]

Yeah, good catch. Cut 'n pasted, then missed the correction when added subscripts thought was done...codger short term memory ain't what it usta' be... :(