sl: Calculate slopes of PE curve
In AChauvenet/ProtectEqual: Protection Equality (PE)

Description Usage Arguments Details Value Note Author(s) References See Also Examples

This is used inside the pe function to calculate the slopes between points and make sure they are in increasing order

1	sl(df, pos)

`df`	df is a dataframe with two columns: the x and y values to calculate PE
`pos`	the position of the points you want to calculate the slope on (starts at 2)

No more details

returns TRUE or FALSE. TRUE means slopes are unsorted and there is a problem; FALSE means they are sorted and there is no problem

none

Alienor Chauvenet

none

x<-runif(10,1,100)
y<-runif(10,1,100)
# unsorted so returns TRUE:
sl(data.frame(x=x,y=y),c(2:length(x)))

# sorted so returns FALSE:
xs<-seq(1,100,10)
ys<-seq(1,50,5)
sl(data.frame(x=xs,y=ys),c(2:length(xs)))