Publications by Andrew Collier

Fixing “Peer certificate cannot be authenticated”

I’m currently getting the following error on a Windows machine: > devtools::install_github("hadley/readr") Error in curl::curl_fetch_disk(url, x$path, handle = handle) : Peer certificate cannot be authenticated with given CA certificates The machine in question is sitting behind a gnarly firewall and proxy, which I suspect are the source...

828 sym R (240 sym/2 pcs)

satRday Cape Town: Call for Submissions

satRday Cape Town will happen on 18 February 2017 at Workshop 17, Victoria & Alfred Waterfront, Cape Town, South Africa. Keynotes and Workshops We have a trio of fantastic keynote speakers: Hilary Parker, Jennifer Bryan and Julia Silge, who’ll be dazzling you on the day as well as presenting workshops on the two days prior to the satRday. Call ...

1314 sym 2 img

satRday in Cape Town (from Exegetic Analytics)

The second satRday (and first satRday on African soil) will happen in Cape Town on 18 August 2017. It’s going to be a one day celebration of R. We have a trio of phenomenal keynote speakers (Hilary Parker, Jenny Bryan and Julia Silge) who will be giving inspiring talks at the conference and also conducting workshops prior to the c...

1168 sym 2 img