I have been trouble with using pathview command. I followed the path view help and wrote the sample codes as following.
i <- 1
pv.out <- pathview(gene.data = gse16873.d[, 1], pathway.id = demo.paths$sel.paths[i], species = "hsa", out.suffix = "gse16873", kegg.native = TRUE)
However, pathview command did not work and the following messages appeared.
Info: Downloading xml files for hsa04110, 1/1 pathways..
Info: Downloading png files for hsa04110, 1/1 pathways..
Warning: Download of hsa04110 xml and png files failed!
Warning: Failed to download KEGG xml/png files, hsa04110 skipped!
Please let me know how to fix this problem.