I get the following error "Dimensions of arrays being concatenated are not consistent."

w20=[2.22939364554e-13,4.39934099226e-10,1.08606937077e-7,

7.8025564785e-6,0.000228338636017,0.00324377334224, 0.0248105208875,

0.10901720602,0.286675505363,0.462243669601,...

0.462243669601,0.286675505363,0.10901720602,0.0248105208875,

0.00324377334224,0.000228338636017,7.8025564785e-6,

1.08606937077e-7,4.39934099226e-10,2.22939364554e-13];

x20=[-5.38748089001,-4.60368244955,-3.94476404012,

-3.34785456738,-2.78880605843,-2.25497400209,-1.73853771212,

-1.2340762154,-0.737473728545,-0.245340708301,...

0.245340708301,0.737473728545,1.2340762154,1.73853771212,

2.25497400209,2.78880605843,3.34785456738,3.94476404012,

4.60368244955,5.38748089001];

Answer 1

[Alex Mcaulley]

Are you defining row vectors? Use ... in each line

w20=[2.22939364554e-13,4.39934099226e-10,1.08606937077e-7,...
7.8025564785e-6,0.000228338636017,0.00324377334224, 0.0248105208875,...
0.10901720602,0.286675505363,0.462243669601,...
0.462243669601,0.286675505363,0.10901720602,0.0248105208875,...
0.00324377334224,0.000228338636017,7.8025564785e-6,...
1.08606937077e-7,4.39934099226e-10,2.22939364554e-13];
x20=[-5.38748089001,-4.60368244955,-3.94476404012,...
-3.34785456738,-2.78880605843,-2.25497400209,-1.73853771212,...
-1.2340762154,-0.737473728545,-0.245340708301,...
0.245340708301,0.737473728545,1.2340762154,1.73853771212,...
2.25497400209,2.78880605843,3.34785456738,3.94476404012,...
4.60368244955,5.38748089001];

If they are matrix each row must have the same number of columns