r - Creating ggplots in a loop -

i struggling create loop make load of different plots variables in file imported r.

some data in dummydata.csv :

time,a1,a2,a3,a4 1,0.1,0.2,0.1,0.1 2,0.2,0.2,0.2,0.3 3,0.4,0.5,0.3,0.4 4,0.6,0.8,0.4,0.6 5,0.8,0.9,0.6,0.7 

basically real data in larger file this, , interested in plotting "time" against each other variable in separate plots, , thought trying loop through more sensible individually writing out each plot!

what tried do:

library("ggplot2")  dummydata <- read.csv("dummydata.csv", header = t)  columns <- colnames(dummydata[2:5])  for(i in columns){   title <- paste("graph_", i, ".pdf")   pdf(title)   ggplot(data = dummydata, aes(x=time, y=i)) + geom_point()} dev.off() 

clearly doesn't work. i've made few different attempts ggplot (or normal plot function in r) take 1 of variables plotted loop, seemingly can't it.

any advice on try appreciated!

you can (it default plot function) :

 (i in 1:(dim(dummydata)[2]-1)){      title<-paste0("graph_", i, ".pdf") # use paste0 remove blanks      pdf(title)      plot(x=df[,1],y=df[,i],pch=20,type='l') # add options such axis titles, color, ...      dev.off()} 

if want use ggplot():

for (i in 1:(dim(dummydata)[2]-1)){     title<-paste0("graph_", i, ".pdf")      pdf(title)     print(ggplot(data = dummydata, aes(x=time, y=dummydata[,i+1]))+geom_point())     dev.off()}