OLE.wmd: calculates a 'weighted mean day' based overlap measure
In biometry/phenologicalOverlap: Phenological overlap between two event time series

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

calculates the overlap on the basis of the concept of the 'weighted mean day'

1	OLE.wmd(data1, data2, CheckData = TRUE)

`data1`	data.frame; abundance dataset. Needs a column with only date objects and one with only numerics. If CheckData = TRUE those need to be named $Date and $Count.
`data2`	data.frame; abundance dataset. Needs a column with only date objects and one with only numerics. If CheckData = TRUE those need to be named $Date and $Count. needs to have the levels $Date and $Count if CheckData = FALSE.
`CheckData`	logical; If TRUE the CheckData() function will be runned in advance.

calculates the overlap on the basis of the concept of the 'weighted mean day' by dividing the difference of wmd by the square-root of the sum of the squared standard deviations of both datasets.

numeric value representing the overlap.

Florian Berger <florian_berger@ymail.com>

scale

#Create Datasets
 a     <- c(1:10)
 dates1 <- as.Date(a, origin = '2017-01-01')
 count1 <- c(1,1,3,4,6,9,5,4,2,1)
 dat1   <- data.frame(dates1, count1)
 b     <- c(6:15)
 dates2 <- as.Date(b, origin = '2017-01-01')
 count2 <- c(1,2,4,5,6,9,3,4,1,1)
 dat2   <- data.frame(dates2, count2)
 
 OLE.wmd(dat1, dat2)