ashaw

# 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 && \

ftrain

#!/bin/bash
#
#                  _     _  __
#  __ _  __ _ _ __| |__ (_)/ _|_   _
# / _` |/ _` | '__| '_ \| | |_| | | |
#| (_| | (_| | |  | |_) | |  _| |_| |
# \__, |\__,_|_|  |_.__/|_|_|  \__, |
# |___/                        |___/
#
#

Jim-Holmstroem

#in this the index is (container,object,time)
data.unstack(level=0).unstack(level=0).plot(legend=False)

tmcw

hexer is cool. It's a new project by Howard Butler that makes hexagon binned files out of point files.

Building hexer

This worked on my system (OSX 10.9, git via homebrew)

git clone https://github.com/hobu/hexer.git

kjordahl

kjordahl

danielballan

# This is Dan Allan's setting of Professor Robert Leheny's plotting style preferences.
# Updated October 2014
#
# Invoke in Python matplotlib like so:
#
#     import matplotlib as mpl
#
#     mpl.style.use('https://gist.github.com/danielballan/be066529de85e87a5fe7/raw')
#
# This feature is only available in matplotlib version 1.4 or higher.

sgillies

# Example of using Fiona, pyproj, and Shapely together in a functional
# style.

import functools
import itertools
import logging
import sys

import fiona
from pyproj import Proj, transform

kjordahl

dwtkns

# This is a shell function to quickly grab the data for a given Landsat 8 tile ID from Google's servers
# For example:
# l8get LC81690352014169LGN00

# The echo at the end is to remind myself of the syntax for extracting bands 8, 4, 3, and 2. (Pansharp, Red, Green, Blue)

# On OSX this would go into your ~/.bash_profile file.
# Requires gsutil from https://developers.google.com/storage/docs/gsutil_install
# Most useful in conjunction with USGS' Earth Explorer: http://earthexplorer.usgs.gov/