Argthtjtr

I'd like to create a sequence with three different increements. From 6 to 15 for example an increment of 0.7 . The folowing sequence should start with the last number of previous sequence (in this case 14.4).
By this I want to model the diameter increment of a tree dependant on the diameter-class (small 6-14.99; medium 15 - 29.99; big >30).

    dbh <- c(seq(from = 6, to = 15, by = temp$DBH_growth[temp$dbh_class == "sma"]),

     seq(from = 15, to = 30, by = temp$DBH_growth[temp$dbh_class == "med"]),

     seq(from = 30, to = 300, by = temp$DBH_growth[temp$dbh_class == "big"]))    

Like this code, but starting with the last number of the sequence before.

Something like this

sma <- seq(6, 15, .7)

med <- seq(max(sma), 30, 1)

lar <- seq(max(med), 300, 1.4)

dbh <- c(sma, med, lar)

supposing that .7,1,1.4 are the increments for small, medium, large respectively, or in your case

sma <- seq(6, 15, temp$DBH_growth[temp$dbh_class == "sma"])

med <- seq(max(sma), 30, temp$DBH_growth[temp$dbh_class == "med"])

lar <- seq(max(med), 300, temp$DBH_growth[temp$dbh_class == "big"])



dbh <- c(sma, med, lar)