r - Create individual plots for each column -


i have dataframe similar df below. each factor, i'd create boxplot comparing factor final score. without loop, looks code below. in practice, want 40 columns, , display in grid. sort of looping through columns seems appropriate here, i'm unsure how that.

library(ggplot2) library(gridextra)  scores <- c(97, 98, 90, 92) factor1 <- c(1, 0, 0, 1) factor2 <- c(2, 1, 2, 0) factor3 <- c(0, 0, 0, 1)  df <- data.frame(scores, factor1, factor2, factor3)  plot1 <- ggplot(df, aes(x=factor(factor1), y=scores)) + geom_boxplot() plot2 <- ggplot(df, aes(x=factor(factor2), y=scores)) + geom_boxplot() plot3 <- ggplot(df, aes(x=factor(factor3), y=scores)) + geom_boxplot() grid.arrange(plot1, plot2, plot3, ncol=2) 

library(ggplot2) library(gridextra)  df <- data.frame(scores=c(97, 98, 90, 92), factor1=c(1, 0, 0, 1),                   factor2=c(2, 1, 2, 0),  factor3=c(0, 0, 0, 1))  fun <- function(x) {    dts <- df[,c("scores",x)]    names(dts)[2] <- "varx"    p <- ggplot(dts, aes(x=factor(varx), y=scores)) + geom_boxplot() + xlab(x)    return(p) }  ps <- lapply(names(df)[-1], fun) grid.arrange(grobs=ps, ncol=2)

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