etiennebr

# dplyr style
polygons %>% 
  mutate(value = raster::extract.sfg(geometry, r, mean)) %>%
  plot()

# sp style
value = raster::extract(polygons, r, mean, df = TRUE)

# multiple values
md <- function(x) data.frame(m = mean(x), d = sd(x)

etiennebr

-- Adapted from http://www.craigkerstiens.com/2015/12/29/my-postgres-top-10-for-2016/
\set QUIET 1
\pset null '¤'

-- Customize prompts
\set PROMPT1 '%[%033[1;34m%][%M %n@%/] # %[%033[0m%]%'
\set PROMPT2 '... # '

-- Show how long each query takes to execute
\timing

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# adapted from: https://stackoverflow.com/a/41935867/171659
# choose the image according to the language chosen in .travis.yml
mkdir -p "$PWD":/home/docker
docker run -ti --rm -v "$PWD":/home/docker -w /home/docker -u docker r-base /bin/bash

# now that you are in the docker image, switch to the travis user
sudo - travis

apt-get install ruby

etiennebr

# install.packages(c("tidyverse",
#                    "devtools",
#                    "testthat",
#                    "usethis",
#                    "reprex",
#                    "covr",
#                    "lintr",
#                    "styler",
#                    "fs",
#                    "lookup",

etiennebr

# set -g mouse-resize-pane on

# Use Alt-arrow keys without prefix key to switch panes
bind -n M-Left select-pane -L
bind -n M-Right select-pane -R
bind -n M-Up select-pane -U
bind -n M-Down select-pane -D

# Shift arrow to switch windows
bind -n S-Left  previous-window

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Useful git aliases

From git book

Unstage

 git config --global alias.unstage 'reset HEAD --'

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