RScript - ggplot() 和 ggsave() 循环不遍历列表

Question

I am trying to use a loop with ggplot() and ggsave() to create a set of plots from a list of separate data frames using the following code:

temp2 = list(gsub("*.txt.out$", "", list.files(pattern="*.out")))
for (i in 1:length(temp2)) {
    Eg_cluster = temp2[[i]]
    df = data.frame(eval(parse(text = Eg_cluster)))
    myplot = ggplot(df, aes(xmin = start, xmax = end, y = molecule, fill = gene)) +
        geom_gene_arrow() +
        facet_wrap(~ molecule, scales = "free", ncol = 3) +
        scale_fill_brewer(palette = "Set3") +
        theme_genes() + ggtitle("snoRNA Cluster ", Eg_cluster)
    ggsave(file = print(paste0(Eg_cluster, ".pdf")), plot = myplot, device = "pdf")
}

The code successfully outputs the first plot from the first data frame in the list but the loop does not seem to iterate through the list and produce the rest of the plots in ggsave. Does anyone have any insights as to why the rest of the plots are not outputted?

Many thanks in advance!

Answer 1

You are making temp 2 a list of length 1.

temp2 = gsub("*.txt.out$", "", list.files(pattern="*.out"))