My dataset:
我的数据集:
mydata<-structure(list(t = c(0.208333333, 0.208333333, 0.208333333, 0.208333333,
1, 1, 1, 1, 2, 2, 2, 2, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16,
16, 16, 0.208333333, 0.208333333, 0.208333333, 0.208333333, 1,
1, 1, 1, 2, 2, 2, 2), parent = c(1.2, 1.4, 0.53, 1.2, 1, 0.72,
0.93, 1.1, 0.88, 0.38, 0.45, 0.27, 0.057, 0.031, 0.025, 0.051,
0.027, 0.015, 0.034, 0.019, 0.017, 0.025, 0.024, 0.023, 0.29,
0.22, 0.34, 0.19, 0.12, 0.092, 0.41, 0.28, 0.064, 0.05, 0.058,
0.043)), .Names = c("t", "Ct"), row.names = c(325L, 326L,
327L, 328L, 341L, 342L, 343L, 344L, 357L, 358L, 359L, 360L, 373L,
374L, 375L, 376L, 389L, 390L, 391L, 392L, 401L, 402L, 403L, 404L,
805L, 806L, 807L, 808L, 821L, 822L, 823L, 824L, 837L, 838L, 839L,
840L), class = "data.frame")
mydata<-structure(list(
