Hi all, let's say I have: lp = lpx_create_prob() lpx_set_obj_dir(lp, LPX_MIN) lpx_add_cols(lp, 3) lpx_add_rows(lp, 2) lpx_set_obj_coef(lp, 1, 100) lpx_set_obj_coef(lp, 2, 200) lpx_set_obj_coef(lp, 3, 300) lpx_set_mat_row(lp, 1, 3, c(1, 2, 3), c(3, 2,1)) lpx_set_row_name(lp, 1, "c1") lpx_set_row_bnds(lp, 1, LPX_LO, 100, 0) print(lpx_get_mat_row(lp, 1)) lpx_write_cpxlp(lp, "hello")
> less hello \* Problem: Unknown *\ Minimize obj: + 100 x_1 + 200 x_2 + 300 x_3 Subject To c1: + x_3 + 2 x_2 + 3 x_1 >= 100 Bounds x_1 = 0 x_2 = 0 x_3 = 0 End But if I do in R, print(lpx_get_mat_row(lp, 1)) $n [1] 3 $ind [1] 3 2 $val [1] 1 2 Is there a reason why I'm missing the 1st index and its constraint value in get_mat_row? Thanks! -- View this message in context: http://www.nabble.com/GLPK-API-tf4098577.html#a11654799 Sent from the R help mailing list archive at Nabble.com. ______________________________________________ [email protected] 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.
