Dear list,

I am relatively new to linux and I am trying, unsuccesfully, to install
'rgdal' on a CentOS machine.

When I type in R:

$ install.packages('rgdal')

the installation stops with the following error:

checking for proj_api.h... no
configure: error: proj_api.h not found in standard or given locations.
ERROR: configuration failed for package 'rgdal'

I understand, from posts such as (
http://stackoverflow.com/questions/15248815/rgdal-package-installation)
that I need to install parts of GDAL and PROJ.4 from the terminal. But I do
not understand which ones nor how to do so under CentOS. Currently I
already ran these commands in the terminal:

$ sudo yum install gdal
$ sudo yum install proj

And both resulted in the message Package xxx already installed and latest
version
Nothing to do

Can anybody help?

Thanks in advance and regards...
Gregory Duveiller

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