Re: From object name strings to objects

Jeff Newmiller via R-help <[email protected]> Tue, 19 May 2026 10:14:22 -0700
Newsgroups gmane.comp.lang.r.general
Message-ID <[email protected]>
This goal is flawed and excessively complicated to accomplish... what if someone does this:

x <- 5
mynames <- c("df1", "df2", "x")

then they try rbinding a scalar with the data frames.

Just re-frame your question to pull source data frames from a dedicated list of possible distributions instead and it becomes simple to implement and easy to re-use:

dists <- list()
dists [["normal"]] <- data.frame(name = "normal", x = rnorm(5))
dists [["uniform"]]  <- data.frame(name = "uniform", x = runif(5))
dists [["binomial"]]  <- data.frame(name = "binomial", x = rbinom(5, 2, 0.5))
mynames <- c("normal", "binomial")

some_function <- function(pool, nms) {
  do.call(rbind, pool[nms])
}

newdf <- some_function(dists, mynames)

newdf


On May 19, 2026 3:48:56 AM PDT, Naresh Gurbuxani <[email protected]> wrote:
>
>I want to stack several dataframes using their names as strings.
>
>df1 <- data.frame(name = "normal", x = rnorm(5))
>df2 <- data.frame(name = "uniform", x = runif(5))
>df3 <- data.frame(name = "binomial", x = rbinom(5, 2, 0.5))
>mynames <- c("df1", "df2", "df3")
>
>newdf <- some_function(mynames)
>
># Desired result
>newdf <- do.call(rbind, list(df1, df2, df3))
>
>How can this be done?
>
>Thanks,
>Naresh
>
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--
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