# example phase equation for 2 coupled cells
x1'=w1+h(x2-x1)
x2'=w2+h(x1-x2)
h(phi)=a0+a1*cos(phi)+b1*sin(phi)+b2*sin(2*phi)
par w1=1,w2=1,a0=.2,a1=.3,b1=-.6,b2=.5
@ xp=x1,yp=x2,xlo=0,ylo=0,xhi=6.3,yhi=6.3
done