radcliff

module GeojsonHelper

  # this method takes in a RGeo geometry object and returns a GeoJSON object
  def to_geojson(geometry_collection)
    
    geojson_object = {}
    geojson_object["type"] = "FeatureCollection"
    geojson_object["features"] = []

    geometry_collection.each_with_index do |record, index|

rtrouton

#!/bin/bash

# Script to run softwareupdate during a First Boot Package Install run.
#
# SWULER is used to allow stdout for No Software Updates Available.
#
# SWUNotAvailable is used to allow stdout for the software update server 
# not being available.

FBPILog="/var/log/firstbootpackageinstall.log" 

ashaw

class TilesController < ApplicationController
  around_filter :up_s3

  def tile_response(map)
    respond_to do |format|
      format.png { 
        send_data map.to_png, :content_type => Mime::Type.lookup_by_extension("png"), :disposition => "inline" 
      }
    end
  end

norm

#!/bin/sh
# 
# wrapper around 'softwareupdate -l' to silence it when no updates exist
# -- Mark Norman Francis <norm@cackhanded.net>

OUTPUT=`mktemp /tmp/checksoftup.XXXXX`
ERRORS=`mktemp /tmp/checksoftup.XXXXX`

# capture output to separate files
softwareupdate -l  >$OUTPUT  2>$ERRORS

ashaw

# get the CSV from http://landsat.usgs.gov/metadata_service/bulk_metadata_files/LANDSAT_8.csv
require 'csv'

FILE   = File.expand_path("..", __FILE__) + "/initial/LANDSAT_8.csv"

SCHEMA = <<-SQL
  DROP TABLE "landsat8";
  CREATE TABLE "landsat8" (
    "sceneid" varchar(21) not null, 
    sensor varchar(8) not null, 

celoyd

This is my default career advice for people starting out in geo/GIS, especially remote sensing, adapted from a response to a letter in 2013.

I'm currently about to start a Geography degree at the University of [Redacted] at [Redacted] with a focus in GIS, and I've been finding that I have an interest in working with imagery. Obviously I should take Remote Sensing and other similar classes, but I'm the type of person who likes to self learn as well. So my question is this: What recommendations would you give to a student who is interested in working with imagery? Are there any self study paths that you could recommend?

I learned on my own and on the job, and there are a lot of important topics in GIS that I don’t know anything about, so I can’t give comprehensive advice. I haven’t arrived anywhere; I’m just ten minutes ahead in the convoy we’re both in. Take these recommendations critically.

Find interesting people. You’ll learn a lot more from a great professor (or mentor, or friend, or conference) o

tmcw

Whole Earth Guide

I'm not sure about this; GIS really got burned from being both a 'science' and a 'product' from the beginning, and there are blurry lines between what I think is essential and what I don't know because I never do it and am not a GIS person. Anyway.

A No-Bullshit Intro to Maps and GIS

1. What Maps Are
2. Data
3. Information
4. Transformation

walkermatt

// Bounding box of our TMS that define our area of interest
var bbox = [-600000, -300000, 1300000, 1600000];

// Resolutions of our TMS that the tiles will be displayed at calculated so
// that at resolution 0 the bounds fit one 256x256 tile: (maxx - minx)/256
var res = [7421.875, 3710.9375, 1855.46875, 927.734375];

// Define the Proj4Leaflet coordinate reference system base on British National Grid
var crs = L.CRS.proj4js(
    'EPSG:27700',

oeon

##This workflow is only for the pansharpened images

####red-green-blue
gdalbuildvrt -separate -q -srcnodata "0 0 0" -vrtnodata "0 0 0" rgb.vrt LC80430352013339LGN00_B4.tif LC80430352013339LGN00_B3.tif LC80430352013339LGN00_B2.tif

####NIR, SWIR, and visible red
gdalbuildvrt -separate -q -srcnodata "0 0 0" -vrtnodata "0 0 0" false.vrt LC80430352013339LGN00_B5.tif LC80430352013339LGN00_B6.tif LC80430352013339LGN00_B4.tif

####color infrared
gdalbuildvrt -separate -q -srcnodata "0 0 0" -vrtnodata "0 0 0" cir.vrt LC80430352013339LGN00_B5.tif LC80430352013339LGN00_B3.tif LC80430352013339LGN00_B4.tif

andymason

#! /bin/bash

# Convert Landsat 8 GeoTIFF images into RGB pan-sharpened JPEGs.
#
# Requirements:
#              * gdal http://www.mapbox.com/tilemill/docs/guides/gdal/
#              * convert (image-magick)
#
# Reference info:
#                 http://www.mapbox.com/blog/putting-landsat-8-bands-to-work/