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Sign upols_regress returns error in the presence of interaction terms in the formula #47
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Member
aravindhebbali
commented
Dec 22, 2017
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The error was due to scaling and centering all the predictors instead of only the numeric types. library(olsrr)
#>
#> Attaching package: 'olsrr'
#> The following object is masked from 'package:datasets':
#>
#> rivers
mt <- mtcars
mt$cyl <- as.factor(mt$cyl)
ols_regress(mpg ~ disp + cyl + disp*cyl, data = mt)
#> Model Summary
#> --------------------------------------------------------------
#> R 0.933 RMSE 2.372
#> R-Squared 0.870 Coef. Var 11.804
#> Adj. R-Squared 0.845 MSE 5.624
#> Pred R-Squared 0.794 MAE 1.778
#> --------------------------------------------------------------
#> RMSE: Root Mean Square Error
#> MSE: Mean Square Error
#> MAE: Mean Absolute Error
#>
#> ANOVA
#> --------------------------------------------------------------------
#> Sum of
#> Squares DF Mean Square F Sig.
#> --------------------------------------------------------------------
#> Regression 979.813 5 195.963 34.842 0.0000
#> Residual 146.234 26 5.624
#> Total 1126.047 31
#> --------------------------------------------------------------------
#>
#> Parameter Estimates
#> ----------------------------------------------------------------------------------------
#> model Beta Std. Error Std. Beta t Sig lower upper
#> ----------------------------------------------------------------------------------------
#> (Intercept) -1.725 0.594 -2.907 0.007 -2.945 -0.505
#> disp -2.779 0.574 -2.779 -4.842 0.000 -3.959 -1.599
#> cyl6 1.696 0.639 0.712 2.655 0.013 0.383 3.009
#> cyl8 1.296 0.634 0.653 2.044 0.051 -0.008 2.600
#> disp:cyl6 2.853 0.748 0.622 3.817 0.001 1.317 4.390
#> disp:cyl8 2.375 0.608 1.451 3.909 0.001 1.126 3.624
#> ----------------------------------------------------------------------------------------Session infodevtools::session_info()
#> Session info -------------------------------------------------------------
#> setting value
#> version R version 3.4.3 (2017-11-30)
#> system x86_64, mingw32
#> ui RTerm
#> language (EN)
#> collate English_India.1252
#> tz Asia/Calcutta
#> date 2017-12-22
#> Packages -----------------------------------------------------------------
#> package * version date source
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#> backports 1.1.2 2017-12-13 CRAN (R 3.4.3)
#> base * 3.4.3 2017-11-30 local
#> bindr 0.1 2016-11-13 CRAN (R 3.4.0)
#> bindrcpp 0.2 2017-06-17 CRAN (R 3.4.1)
#> broom 0.4.2 2017-02-13 CRAN (R 3.4.0)
#> class 7.3-14 2015-08-30 CRAN (R 3.4.3)
#> colorspace 1.2-7 2016-10-11 CRAN (R 3.2.5)
#> compiler 3.4.3 2017-11-30 local
#> CVST 0.2-1 2013-12-10 CRAN (R 3.4.2)
#> datasets * 3.4.3 2017-11-30 local
#> ddalpha 1.3.1 2017-09-27 CRAN (R 3.4.2)
#> DEoptimR 1.0-8 2016-11-19 CRAN (R 3.4.1)
#> devtools 1.13.3 2017-08-02 CRAN (R 3.4.1)
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#> dimRed 0.1.0 2017-05-04 CRAN (R 3.4.2)
#> dplyr 0.7.4 2017-09-28 CRAN (R 3.4.2)
#> DRR 0.0.2 2016-09-15 CRAN (R 3.4.2)
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#> gower 0.1.2 2017-02-23 CRAN (R 3.4.2)
#> graphics * 3.4.3 2017-11-30 local
#> grDevices * 3.4.3 2017-11-30 local
#> grid 3.4.3 2017-11-30 local
#> gridExtra 2.2.1 2016-02-29 CRAN (R 3.4.1)
#> gtable 0.2.0 2016-02-26 CRAN (R 3.2.5)
#> htmltools 0.3.6 2017-04-28 CRAN (R 3.4.1)
#> httpuv 1.3.5 2017-07-04 CRAN (R 3.4.1)
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#> lattice 0.20-35 2017-03-25 CRAN (R 3.4.3)
#> lava 1.5.1 2017-09-27 CRAN (R 3.4.2)
#> lazyeval 0.2.0 2016-06-12 CRAN (R 3.3.2)
#> lubridate 1.7.1 2017-11-03 CRAN (R 3.4.2)
#> magrittr 1.5 2014-11-22 CRAN (R 3.2.2)
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#> Matrix 1.2-12 2017-11-20 CRAN (R 3.4.3)
#> memoise 1.0.0.9001 2017-03-06 Github (hadley/memoise@884d565)
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#> mime 0.5 2016-07-07 CRAN (R 3.3.2)
#> mnormt 1.5-5 2016-10-15 CRAN (R 3.3.2)
#> munsell 0.4.3 2016-02-13 CRAN (R 3.2.5)
#> nlme 3.1-125 2016-02-27 CRAN (R 3.2.3)
#> nnet 7.3-12 2016-02-02 CRAN (R 3.4.3)
#> nortest 1.0-4 2015-07-30 CRAN (R 3.2.3)
#> olsrr * 0.4.0.9000 2017-12-22 local
#> parallel 3.4.3 2017-11-30 local
#> pkgconfig 2.0.1 2017-03-21 CRAN (R 3.4.0)
#> plyr 1.8.4 2016-06-08 CRAN (R 3.2.5)
#> prodlim 1.6.1 2017-03-06 CRAN (R 3.4.2)
#> psych 1.6.9 2016-09-17 CRAN (R 3.3.2)
#> purrr 0.2.4 2017-10-18 CRAN (R 3.4.2)
#> R6 2.2.2 2017-06-17 CRAN (R 3.4.1)
#> Rcpp 0.12.14 2017-11-23 CRAN (R 3.4.3)
#> RcppRoll 0.2.2 2015-04-05 CRAN (R 3.4.2)
#> recipes 0.1.1 2017-11-20 CRAN (R 3.4.2)
#> reshape2 1.4.2 2016-10-22 CRAN (R 3.2.5)
#> rlang 0.1.4 2017-11-05 CRAN (R 3.4.3)
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#> rprojroot 1.3-1 2017-12-22 Github (krlmlr/rprojroot@0ec8bf7)
#> scales 0.4.1 2016-11-09 CRAN (R 3.2.5)
#> sfsmisc 1.1-1 2017-06-08 CRAN (R 3.4.2)
#> shiny 1.0.5 2017-08-23 CRAN (R 3.4.2)
#> splines 3.4.3 2017-11-30 local
#> stats * 3.4.3 2017-11-30 local
#> stringi 1.1.5 2017-04-07 CRAN (R 3.4.1)
#> stringr 1.2.0 2017-02-18 CRAN (R 3.4.1)
#> survival 2.41-3 2017-04-04 CRAN (R 3.4.3)
#> tibble 1.3.4 2017-08-22 CRAN (R 3.4.1)
#> tidyr 0.7.2 2017-10-16 CRAN (R 3.4.2)
#> tidyselect 0.2.2 2017-10-10 CRAN (R 3.4.2)
#> timeDate 3012.100 2015-01-23 CRAN (R 3.2.5)
#> tools 3.4.3 2017-11-30 local
#> utils * 3.4.3 2017-11-30 local
#> withr 2.1.0 2017-11-01 CRAN (R 3.4.3)
#> xtable 1.8-0 2015-11-02 CRAN (R 3.1.3)
#> yaml 2.1.16 2017-12-12 CRAN (R 3.4.3) |
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