for loop - Running factor analysis using split function in R -

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i have following dataset :

mkt econ_unemp  econ_gas open 504 0.0743088   3.461    38 504 0.0740673   3.448    38 504 0.0740673   3.455    38 504 0.0740673   3.42     38 504 0.072682    3.391    38 505 0.0692244   3.345    38 505 0.0692244   3.381    38 505 0.0692244   3.484    38 505 0.0692244   3.488    38

i need run factor analysis on 3 variables market used split function in r split data:

  splitx<-split(data,data$dma)

and tried running factor analysis follows:

for (i in 1:length(splitx)) {   fa <- factanal(splitx[[i]],factors =1)   }

but getting following error:

error in optim(start, fafn, fagr, method = "l-bfgs-b", lower = lower,:non-finite value supplied optim

i hope information provided sufficient. can me fix this.

regards

by(data[, -1], data[, 1], factanal, factors = 1)

that should trick, assuming mkt split variable.


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