Dear list: I have tried MASS's mca function and SAS's PROC corresp on the farms data (included in MASS, also used as mca's example), the results are different:
R: mca(farms)$rs: 1 2 1 0.059296637 0.0455871427 2 0.043077902 -0.0354728795 3 0.059834286 0.0730485572 4 0.059834286 0.0730485572 5 0.012900181 -0.0503121890 6 0.038846577 -0.0340961617 7 0.005886752 -0.0438516465 8 -0.015108789 -0.0247221783 9 0.007505626 -0.0646608108 10 0.006631230 -0.0362117073 11 0.013309217 -0.0680733730 12 0.056549933 0.0010773359 13 0.015681958 0.0334320046 14 -0.065598990 0.0151619769 15 -0.046868229 0.0357782553 16 -0.003048803 0.0128157261 17 -0.051281437 0.0278941743 18 -0.051819085 0.0004327598 19 -0.072814626 0.0195622280 20 -0.072814626 0.0195622280 And in SAS's corresp output: Row Coordinates Dim1 Dim2 1 1.0607 -0.8155 2 0.7706 0.6346 3 1.0703 -1.3067 4 1.0703 -1.3067 5 0.2308 0.9000 6 0.6949 0.6099 7 0.1053 0.7844 8 -0.2703 0.4422 9 0.1343 1.1567 10 0.1186 0.6478 11 0.2381 1.2177 12 1.0116 -0.0193 13 0.2805 -0.5980 14 -1.1735 -0.2712 15 -0.8384 -0.6400 16 -0.0545 -0.2293 17 -0.9174 -0.4990 18 -0.9270 -0.0077 19 -1.3025 -0.3499 20 -1.3025 -0.3499 Is MASS's mca developed with different definition to SAS's corresp ? Thank you for any comments! -- Gong-Yi Liao Department of Statistics University of Connecticut 215 Glenbrook Road U4120 Storrs, CT 06269-4120 860-486-9478 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.