localmin {erpR} | R Documentation |
The function calculates a local minimum of the vector x
surrounded by at least n.points
higher numbers.
localmin(x, n.points = 2)
x |
a vector of numbers. |
n.points |
a minimum number of higher values to determine the local minimum (see Details). Default is two points. |
The function calculates a local minimum of the vector x
, i.e. the lowest value of the vector x
surrounded by at least n
higher numbers. The concept of the local minimum applied to ERP analysis is taken from Luck (2005).
The local minimum of the vector x
is returned.
Giorgio Arcara
Luck, S., J. (2005). An Introduction to the Event-Related Potential Technique. Cambridge, Mass.: The MIT Press.
x=seq(-5.5,1,0.001) y=-(sin(x)+0.3*x) plot(x,y, type="l") abline(h=localmin(y)) #print an horizontal line intersecting the local minimum