as.LongTriangle function

Convert Triangle from wide to long

Given a Triangle in matrix ("wide") format, convert to data.frame ("long") format.

as.LongTriangle(Triangle, varnames = names(dimnames(Triangle)), 
                value.name = "value", na.rm = TRUE)

Arguments

• Triangle: a loss "triangle". Must be a matrix.
• varnames: character names for the columns that will store the rownames and colnames of matrix Triangle. Defaults to names(dimnames(Triangle)) if available. If not provided, uses c("origin", "dev").
• value.name: column name to be given to the matrix values that will be stored in the data.frame. Defaults to "value".
• na.rm: should NA values be excluded from the data.frame? Defaults to TRUE.

Details

Unlike the as.data.frame.triangle method, and Unlike the 'melt' method in the 'reshape2' package, this function returns a data.frame where the rownames and colnames of Triangle are stored as factors. This can be a critical feature when the order of the levels of the columns is important. For example, when a Triangle is plotted, the order of the origin and dev dimensions is important. See Examples section.

Returns

A data.frame.

Author(s)

Daniel Murphy

See Also

as.data.frame.triangle

Examples

as.LongTriangle(GenIns)
## Not run:

ggplot(as.LongTriangle(GenIns), 
       aes(x = dev, y = value, group = origin, color = origin)) + geom_line()
## End(Not run)