You may have to add an explicit 'print' to ggplot
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) %>%
print(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")
}
Thanks
Jim Holtman
Data Munger Guru
What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.
Thanks
Jim Holtman
Data Munger Guru
What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.
On Wed, Dec 22, 2021 at 9:08 AM Kai Yang via R-help
<r-help@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")}
>
> [[alternative HTML version deleted]]
>
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______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
