MATLAB: Removing the max and min of a vector without removing multiple minimums or maximums

maxminvector

I'm working on a script for four-bar linkages and need to remove the shortest and longest links for calculations. However if my shortest or longest value is repeated in my vector, my indexing removes all of them. How do I prevent all being removed when I just need 1 min and 1 max removed
%Enter Link Lengths
l1 = 20; %Link 1, ground
l2 = 10; %Link 2, crank
l3 = 10; %Link 3, coupler
l4 = 10; %Link 4, rocker
a1 = [l1,l2,l3,l4]; %Array of link values for finding S & L
%Mobility
L = 4; %Number of links
J = 4; %Number of Joints
G = 1; %Number of Grounded links
M = 3*L-2*J-3*G
%Barker Classification 
S=min(a1); %Shortest Link
L=max(a1); %Longest Link
a2=a1(a1~=S & a1~=L); %P & Q matrix
P=a2(1); Q=a2(2); %Pulling out P & Q

Best Answer

[~,Sx] = min(a1); % Shortest Link
[~,Lx] = max(a1); % Longest Link
a2 = a1;
a2([Sx,Lx]) = []
And tested using the values that you gave here:
>> l1 = 6; %Link 1, ground
>> l2 = 2; %Link 2, crank
>> l3 = 7; %Link 3, coupler
>> l4 = 9; %Link 4, rocker
>> a1 = [l1,l2,l3,l4]; %Array of link values for finding S & L
>> [S,Sx] = min(a1); %Shortest Link
>> [L,Lx] = max(a1); %Longest Link
>> a2 = a1;
>> a2([Sx,Lx]) = []
a2 =
   6   7
Related Question