[R] for loop question in R

[Eric Berger]

Try replacing
"c:/temp/f[i].jpg"
with
paste0("c:/temp/",f[i],".jpg")


On Wed, Dec 22, 2021 at 7:08 PM Kai Yang via R-help <r-help using r-project.org>
wrote:

> Hello R team,I want to use for loop to generate multiple plots with 3
> parameter, (y is for y axis, c is for color and f is for file name in
> output). I created a data frame to save the information and use the
> information in for loop. I use y[i], c[i] and f[i] in the loop, but it
> seems doesn't work. Can anyone correct my code to make it work?
> Thanks,Kai
>
> library(ggplot2)library(tidyverse)
> y <- c("hwy","cty")c <- c("cyl","class")f <- c("hwy_cyl","cty_class")
> mac <- data.frame(y,c,f)
> for (i in nrow(mac)){  mpg %>%    filter(hwy <35) %>%     ggplot(aes(x =
> displ, y = y[i], color = c[i])) +     geom_point()
> ggsave("c:/temp/f[i].jpg",width = 9, height = 6, dpi = 1200, units = "in")}
>
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>
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