as installed tximportData, there was no "tx2gene.gencode.v27.csv".
below is the shell for installation;
> source("https://bioconductor.org/biocLite.R")
Bioconductor version 3.6 (BiocInstaller 1.28.0), ?biocLite for help
A new version of Bioconductor is available after installing the most recent
version of R; see http://bioconductor.org/install
> biocLite("tximportData")
BioC_mirror: https://bioconductor.org
Using Bioconductor 3.6 (BiocInstaller 1.28.0), R 3.4.4 (2018-03-15).
Installing package(s) ‘tximportData’
trying URL 'https://bioconductor.org/packages/3.6/data/experiment/src/contrib/tximportData_1.6.0.tar.gz'
Content type 'application/x-gzip' length 109001249 bytes (104.0 MB)
==================================================
downloaded 104.0 MB
* installing *source* package ‘tximportData’ ...
** inst
** help
No man pages found in package ‘tximportData’
*** installing help indices
** building package indices
** installing vignettes
** testing if installed package can be loaded
* DONE (tximportData)
The downloaded source packages are in
‘/tmp/RtmpYT5Qzw/downloaded_packages’
> library(tximportData)
> dir <- system.file("extdata", package = "tximportData")
> list.files(dir)
[1] "cufflinks" "kallisto" "kallisto_boot"
[4] "rsem" "sailfish" "salmon"
[7] "salmon_gibbs" "samples_extended.txt" "samples.txt"
[10] "tx2gene.csv"
>
