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@rhwlo
rhwlo / extra-bg.sh
Created August 25, 2016 18:26
background a process in another shell by pid, for @vruba
#!/bin/sh
ppid_tty=$(readlink /proc/$(cut -d' ' -f4 /proc/$1/stat)/fd/0)
kill -TSTP $1 && (/bin/echo "backgrounded $1" >> $ppid_tty) && kill -CONT $1
@meetar
meetar / HOTQuickstart.md
Last active July 30, 2020 12:15
How to get started contributing to a Humanitarian OpenStreetMap task

##How to get started contributing to a Humanitarian OpenStreetMap Team task

###Overview

OpenStreetMap (OSM) is an open-source map of the world that anyone can edit. But like any map, it's incomplete.

The Humanitarian OpenStreetMap Team (HOT) helps organize people to improve the OSM map for crisis areas, mostly so aid workers can find their way around and make decisions about undermapped places. The data in these crisis areas is often very poor, or completely non-existent. Therefore any contribution you make at all will be a vast improvement, and could materially help people who are on the ground right now, looking at this data as you edit it, and deciding where to go and who to help.

There are many HOT tasks active at once. As of August 2014, the highest-priority tasks are Gaza and areas affected by the West African Ebola outbreak.

# https://www.mapbox.com/blog/processing-landsat-8/
task :landsat_2014 => :environment do
dirs = Dir["#{Rails.root.to_s}/db/initial/raster/*"].reject {|q| q =~ /tar\.gz/ }
dirs.each do |dir|
scene_id = dir.split("/")[-1]
[4,3,2].each do |band|
`gdalwarp -t_srs EPSG:3857 #{dir}/#{scene_id}_B#{band}.TIF #{dir}/#{scene_id}_B#{band}-projected.tif`
end
`convert -combine #{dir}/#{scene_id}_B{4,3,2}-projected.tif #{dir}/#{scene_id}_RGB-projected.tif && \
convert -channel B -gamma 0.925 -channel R -gamma 1.03 -channel RGB -sigmoidal-contrast 50x16% #{dir}/#{scene_id}_RGB-projected.tif #{dir}/#{scene_id}_RGB-projected-corrected.tif && \
@scothis
scothis / gist:2884321
Created June 6, 2012 19:53
toHulkCase
String.prototype.toHulkCase = function(str) {
   return 'HULK SMASH PUNY ' + str.toUpperCase() + ' ARRRRRRRRRRRRR';
}