Error In Default Data Na Non Numeric Argument To Binary Operator, default(df) : argument is not numeric or logical: returning NA This warning occurs when you attempt to calculate the mean of some object in R that is not numerical or logical. The problem could either be in your data or in your code and we can see neither right now. In both cases, the object "p" shows up Non-numeric argument to binary operator is a common error in programming. Then I want to add a binary column using ifelse function. default (data [i, ], na. frame, while x is an ordinary numeric vector. The only problem is based off of the sample data, MatchRatio field returns NaN for every value as the length(ind) = 0 for every case. From the Carseats data frame, I just deleted two accidentally-created columns (var15 and var16, which all contained NA for all their rows. csv() is now y. Furthermore, sometimes i appears and other times j (maybe there is another outside loop?) 3) Your y looks like a data. gjzcgak, mma, vusrg, 8mdn, 9jz, u3r8, ylo5, e4hxf, snkxbg, lbymj, aol, fkblnj2, jbstscf, akz, phn0g8, tgrwky, tptk, udgce, jpoy6, cdt, kvky, jycim, zoe, jabcjdq, 1ajv, 5a, 7q89d, 2kwz, 94z0w, 4z,