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do_simulation2
2006 Dec 05
1
dynamic variable creation in lists and data frames
...running simulations and am interested in two parameters, ESM and ESMM (the
similarity of these names is important for my question). I do simulations
to generate ESMM, then plug these values into a second simulation function
to get ESM:
x <- list()
for (i in 1:nsimulations)
{
x$ESMM[i] <- do_simulation1()
x$ESM[i] <- do_simulation2(x$ESMM[i])
}
and I return everything as a dataframe, x <- as.data.frame(x)
When I do this, I find that x$ESMM is overwritten by x$ESM for the first
simulation. However, x$ESM is nonetheless correctly generated using
x$ESMM.
Thus, x$ESM[1] = x$ESMM[1], but fo...