I'm not sure if there are better methods to create objects such as
dataframes with other than rbind function.
II usually combine a data.frames created at each loop with a rbind(),
specially when I don't know the dimension of the data.frame that will be
created.

Binding the new to an existing data.frame seems to be the easiest way to
build an object that assemble data in a loop.

Nevertheless, rbind seems to be much slower than filling rows of a previous
created object but I don't know how this could be done in all situations,
specially when the number of rows of the created object may vary at each
loop.

Any idea of alternatives to rbind?

_______________
Paulo E. Cardoso

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