Dear Sirs I have been tried many times, to follow your tutorial to gen expression analysis. Using R studio I install DESeq 2, but I can not go further from this point

> ddsTxi <- DESeqDataSetFromTximport(txi,
+                                    colData = samples,
+                                    design = ~ condition)
Error in DESeqDataSetFromTximport(txi, colData = samples, design = ~condition) :
  no se pudo encontrar la función "DESeqDataSetFromTximport"
> biocLite("DESeqDataSetFromTximport")
BioC_mirror: https://bioconductor.org
Using Bioconductor 3.6 (BiocInstaller 1.28.0), R 3.4.2 (2017-09-28).
Installing package(s) ‘DESeqDataSetFromTximport’
installation path not writeable, unable to update packages: txtplot, codetools, Matrix
Warning message:

It seems  that I have problems with 3.4.2 version of R,  Please help me

jesus b

The package is DESeq2. DESeqDataSetFromTximport is a function. You can only install packages, and then after loading them with library(), the functions will be available. DESeqDataSetFromTximport was introduced in DESeq2 in version 1.12, so using any version >= 1.12 you should be able to access that function after loading the package with library().