Soybean.RdThe Soybean data frame has 412 rows and 5 columns.
This data frame contains the following columns:
a factor giving a unique identifier for each plot.
a factor indicating the variety; Forrest (F) or Plant Introduction #416937 (P).
a factor indicating the year the plot was planted.
a numeric vector giving the time the sample was taken (days after planting).
a numeric vector giving the average leaf weight per plant (g).
These data are described in Davidian and Giltinan (1995, 1.1.3, p.7) as “Data from an experiment to compare growth patterns of two genotypes of soybeans: Plant Introduction #416937 (P), an experimental strain, and Forrest (F), a commercial variety.”
Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York. (Appendix A.27)
Davidian, M. and Giltinan, D. M. (1995), Nonlinear Models for Repeated Measurement Data, Chapman and Hall, London.
summary(fm1 <- nlsList(SSlogis, data = Soybean))
#> Warning: 2 errors caught in nls(y ~ 1/(1 + exp((xmid - x)/scal)), data = xy, start = list(xmid = aux[[1L]], scal = aux[[2L]]), algorithm = "plinear", ...). The error messages and their frequencies are
#>
#> number of iterations exceeded maximum of 50
#> 1
#> step factor 0.000488281 reduced below 'minFactor' of 0.000976562
#> 1
#> Call:
#> Model: weight ~ SSlogis(Time, Asym, xmid, scal) | Plot
#> Data: Soybean
#>
#> Coefficients:
#> Asym
#> Estimate Std. Error t value Pr(>|t|)
#> 1988F4 15.151550 0.8738054 17.3397312 4.463275e-07
#> 1988F2 19.745419 1.9433542 10.1604842 3.794022e-07
#> 1988F1 20.338407 2.2589870 9.0033309 6.127446e-08
#> 1988F7 19.871203 1.7791330 11.1690375 5.679788e-06
#> 1988F5 30.648921 11.2081166 2.7345291 3.736542e-03
#> 1988F8 22.777043 2.4318953 9.3659634 2.360279e-07
#> 1988F6 23.293137 2.7299845 8.5323330 7.581537e-09
#> 1988F3 23.697110 1.5879718 14.9228787 3.597063e-07
#> 1988P1 17.300492 0.8640908 20.0216145 1.013670e-08
#> 1988P5 17.703754 1.0257602 17.2591548 3.921123e-09
#> 1988P4 24.008910 2.9706375 8.0820734 3.017103e-03
#> 1988P8 28.249591 4.1988040 6.7280090 2.276684e-05
#> 1988P7 27.485995 3.3945416 8.0971155 1.342293e-08
#> 1988P3 24.939006 1.7455364 14.2873026 1.631778e-05
#> 1988P2 36.661160 6.3486896 5.7746026 2.477014e-02
#> 1988P6 163.702464 255.3288784 0.6411436 8.337203e-01
#> 1989F6 8.509308 1.3635636 6.2404919 5.729740e-05
#> 1989F5 9.669081 0.9877562 9.7889350 2.180771e-05
#> 1989F4 11.247524 1.0049236 11.1924169 7.984003e-08
#> 1989F1 11.251052 1.1113040 10.1241894 7.711603e-05
#> 1989F2 11.233333 0.9989299 11.2453664 6.475196e-09
#> 1989F7 10.071395 0.8452311 11.9155512 3.415717e-05
#> 1989F8 10.609519 0.8302693 12.7784076 1.450821e-05
#> 1989F3 18.419564 2.6808047 6.8709086 6.092551e-06
#> 1989P7 15.471897 0.7861292 19.6811115 8.869028e-07
#> 1989P4 18.177522 1.4204479 12.7970351 7.262489e-07
#> 1989P6 20.498831 1.9022691 10.7759887 5.129594e-06
#> 1989P5 NA NA NA NA
#> 1989P1 21.683985 1.9183399 11.3035157 7.806237e-08
#> 1989P3 22.283750 1.1402473 19.5429100 4.478139e-07
#> 1989P2 28.296972 4.1482952 6.8213496 1.561728e-04
#> 1989P8 NA NA NA NA
#> 1990F2 19.459102 6.1238316 3.1776024 1.175660e-03
#> 1990F3 19.867932 3.2357524 6.1401275 6.112667e-04
#> 1990F4 27.435518 9.4505666 2.9030554 2.326747e-03
#> 1990F5 18.719501 1.2575853 14.8852735 2.425467e-07
#> 1990F1 19.790735 1.9241287 10.2855567 3.680484e-04
#> 1990F8 20.290441 1.5158389 13.3856186 4.113934e-05
#> 1990F7 19.835326 1.3061649 15.1859283 1.585581e-06
#> 1990F6 21.197115 1.7368414 12.2044041 8.578174e-06
#> 1990P8 18.513513 1.4497108 12.7704868 3.942440e-04
#> 1990P7 19.160767 2.1203103 9.0367749 2.394577e-04
#> 1990P3 19.198083 1.3929487 13.7823336 9.374480e-05
#> 1990P1 18.448379 0.9806108 18.8131508 1.488721e-06
#> 1990P6 17.689700 1.0685907 16.5542330 1.302191e-04
#> 1990P5 19.544895 1.1900420 16.4237024 8.984247e-05
#> 1990P2 25.787243 3.8482487 6.7010333 1.186730e-05
#> 1990P4 26.128905 3.2551064 8.0270507 1.385877e-03
#> xmid
#> Estimate Std. Error t value Pr(>|t|)
#> 1988F4 52.83408 1.332907 39.638246 1.445923e-09
#> 1988F2 56.57507 2.769461 20.428185 5.866605e-09
#> 1988F1 57.40242 3.006916 19.090129 3.277052e-10
#> 1988F7 56.16159 2.494661 22.512709 8.925168e-08
#> 1988F5 64.12999 9.123542 7.029067 4.563191e-05
#> 1988F8 59.33033 2.684914 22.097663 6.076840e-10
#> 1988F6 59.59762 3.078580 19.358801 2.491787e-11
#> 1988F3 56.42461 1.631701 34.580235 1.056373e-09
#> 1988P1 48.84945 1.347844 36.242652 1.617368e-10
#> 1988P5 51.27156 1.512099 33.907531 3.516647e-11
#> 1988P4 57.75124 3.788656 15.243199 6.825981e-05
#> 1988P8 62.98014 4.006304 15.720259 7.127107e-08
#> 1988P7 61.49839 3.239559 18.983567 3.518826e-11
#> 1988P3 56.32520 1.781868 31.610200 7.333807e-08
#> 1988P2 66.56078 4.701584 14.157096 2.150759e-04
#> 1988P6 104.97341 37.998029 2.762602 3.790325e-01
#> 1989F6 55.27332 5.345507 10.340144 4.786636e-06
#> 1989F5 51.26706 3.391918 15.114475 2.551122e-06
#> 1989F4 53.81049 2.669678 20.156176 4.228986e-09
#> 1989F1 56.62630 2.721298 20.808560 2.227069e-06
#> 1989F2 52.24016 2.860031 18.265595 5.733555e-10
#> 1989F7 51.37754 2.538522 20.239155 2.503115e-06
#> 1989F8 47.96772 2.653212 18.079114 2.608897e-06
#> 1989F3 66.12355 4.004286 16.513193 7.770932e-08
#> 1989P7 46.34313 1.748791 26.500094 2.015245e-07
#> 1989P4 57.18041 2.458381 23.259378 3.691032e-08
#> 1989P6 58.23818 3.195134 18.227147 3.766450e-07
#> 1989P5 NA NA NA NA
#> 1989P1 59.69305 2.877246 20.746595 3.760304e-09
#> 1989P3 53.39565 1.685346 31.682313 4.022773e-08
#> 1989P2 67.17505 4.816749 13.946141 4.718717e-06
#> 1989P8 NA NA NA NA
#> 1990F2 66.28541 10.062524 6.587355 3.658736e-05
#> 1990F3 58.27752 5.679501 10.261027 5.243495e-05
#> 1990F4 70.27180 11.183796 6.283358 6.217567e-05
#> 1990F5 51.27603 1.979733 25.900474 1.528310e-08
#> 1990F1 55.69340 3.010641 18.498849 2.156924e-05
#> 1990F8 55.54949 2.120896 26.191526 1.497685e-06
#> 1990F7 54.73623 1.806128 30.305834 5.068892e-08
#> 1990F6 54.56184 2.526903 21.592380 5.054519e-07
#> 1990P8 52.44794 2.384233 21.997824 2.862984e-05
#> 1990P7 54.80233 3.662114 14.964672 2.073748e-05
#> 1990P3 49.71495 2.322466 21.406105 1.087806e-05
#> 1990P1 47.91706 1.467730 32.647045 9.558243e-08
#> 1990P6 50.23032 1.676583 29.959940 7.154673e-06
#> 1990P5 51.15028 1.753041 29.178025 5.361918e-06
#> 1990P2 62.35966 4.676813 13.333794 3.906739e-07
#> 1990P4 61.19885 3.832619 15.967893 5.339368e-05
#> scal
#> Estimate Std. Error t value Pr(>|t|)
#> 1988F4 5.176820 1.091749 4.741768 1.854692e-03
#> 1988F2 8.406559 1.736041 4.842373 2.948576e-05
#> 1988F1 9.604743 1.723335 5.573345 1.654535e-06
#> 1988F7 8.069281 1.632197 4.943814 5.772665e-04
#> 1988F5 11.262835 2.789211 4.038001 6.472908e-04
#> 1988F8 9.000647 1.511850 5.953399 5.185132e-06
#> 1988F6 9.718840 1.633690 5.949010 9.256229e-08
#> 1988F3 7.642380 1.104895 6.916837 6.251672e-05
#> 1988P1 6.362358 1.091349 5.829810 4.497602e-05
#> 1988P5 6.809096 1.176508 5.787547 7.181926e-06
#> 1988P4 11.744706 1.893425 6.202889 1.135466e-02
#> 1988P8 10.947130 1.749418 6.257583 3.661666e-05
#> 1988P7 10.177799 1.561879 6.516380 6.056751e-08
#> 1988P3 8.315917 1.151803 7.219912 1.167177e-03
#> 1988P2 11.916114 1.711035 6.964271 1.092031e-02
#> 1988P6 17.929675 3.017030 5.942824 8.315873e-02
#> 1989F6 8.856063 3.535774 2.504702 3.994054e-03
#> 1989F5 7.205896 2.373316 3.036215 5.159590e-03
#> 1989F4 6.486573 2.153628 3.011928 5.325839e-05
#> 1989F1 6.068136 2.374275 2.555784 3.089681e-02
#> 1989F2 7.016427 2.076585 3.378829 2.598127e-06
#> 1989F7 5.500159 1.926244 2.855381 2.054615e-02
#> 1989F8 5.960926 1.718186 3.469314 6.366473e-03
#> 1989F3 9.224764 2.337292 3.946775 9.227941e-05
#> 1989P7 5.393890 1.125755 4.791354 8.574281e-04
#> 1989P4 8.402098 1.676272 5.012370 7.397974e-05
#> 1989P6 10.613533 1.854108 5.724333 1.138299e-04
#> 1989P5 NA NA NA NA
#> 1989P1 9.972837 1.717799 5.805590 2.155525e-06
#> 1989P3 7.900595 1.179248 6.699689 8.814552e-05
#> 1989P2 12.523509 2.108665 5.939068 3.025485e-04
#> 1989P8 NA NA NA NA
#> 1990F2 13.157219 3.660268 3.594605 6.661875e-04
#> 1990F3 12.796287 2.697127 4.744413 1.984977e-03
#> 1990F4 14.560188 3.415482 4.262996 3.997895e-04
#> 1990F5 7.758448 1.379453 5.624293 3.012976e-05
#> 1990F1 9.617031 1.745763 5.508782 6.062151e-03
#> 1990F8 7.771085 1.327913 5.852106 2.041157e-03
#> 1990F7 6.792194 1.185178 5.730947 1.887271e-04
#> 1990F6 9.263610 1.528612 6.060144 2.589908e-04
#> 1990P8 8.581012 1.561491 5.495395 1.537997e-02
#> 1990P7 10.847282 2.066123 5.250066 2.908553e-03
#> 1990P3 9.322305 1.585599 5.879358 4.746622e-03
#> 1990P1 6.611841 1.153215 5.733397 4.896358e-04
#> 1990P6 6.626907 1.260483 5.257433 2.008824e-02
#> 1990P5 7.293155 1.249137 5.838557 9.704477e-03
#> 1990P2 11.656924 2.055390 5.671392 2.695022e-05
#> 1990P4 10.971539 1.804042 6.081642 4.695487e-03
#>
#> Residual standard error: 1.020867 on 258 degrees of freedom
#>