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// via http://stackoverflow.com/questions/20774648/three-js-generate-uv-coordinate

var assignUVs = function( geometry ){

    geometry.computeBoundingBox();

    var max     = geometry.boundingBox.max;
    var min     = geometry.boundingBox.min;

    var offset  = new THREE.Vector2(0 - min.x, 0 - min.y);

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var qs   = window.location.search.substr(1).split('&'),
    args = {};
qs.forEach(function(arg) {
  arg = arg.split('=');
  args[arg[0]] = arg[1];
});

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Simple demonstration of 2d perlin noise. (forked from d2fn's perlin noise grid)

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wget http://data.oaklandnet.com/resource/ym6k-rx7a.json -O `date "+%Y.%m.%d"`.json

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Processing LiDAR to extract building heights

Walk through

Detailed walk through of building extraction using postgis

First lets pull a data layer from of openstreetmap. You can do this any which way you’d like, as there are a variety of methods for pulling openstreetmap data from their database. Check the [wiki] (http://wiki.openstreetmap.org/wiki/Downloading_data) for a comprehensive list. My favourite method thus far is pulling the data straight into QGIS using the open layers plugin. For those who may want to explore this method, check [this tutorial] (http://www.qgistutorials.com/en/docs/downloading_osm_data.html). For building extraction you only need building footprints, and include the building tags. Not all polygons are of type building in OSM, so we can download all the polygons, and then filter the layer for only polygons tagged as buildings.

LiDAR data was pulled from USGS via the Earth Explorer site. [Here] (http://earthobservatory.nasa.gov/blogs/ele

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This tutorial is partialy based on Yuriy’s Czoli article ‘Processing LiDAR to extract building heights’.

Install PostGIS

On Mac OSX

• Install Postgres, PostGIS and OSM-PostGIS tools

brew install postgis 

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{
	"always_show_minimap_viewport": true,
	"auto_complete_commit_on_tab": true,
	"bold_folder_labels": true,
	"caret_extra_width": 0,
	"caret_style": "blink",
	"color_scheme": "Packages/Monokai Extended/Monokai Extended.tmTheme",
	"ensure_newline_at_eof_on_save": true,
	"font_face": "inconsolata-g",
	"font_size": 7.5,

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(function () {
  var img = document.createElement('img');
  document.body.appendChild(img);
  img.style.position = 'fixed';
  img.style.top = 0;
  img.style.right = 0;
  img.style.width = '500px';
  img.style.background = '#fff';
  img.style['z-index'] = 1000000;
  window.addEventListener('keypress', function (e) {

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          ctx.save();
          ctx.beginPath();
          
          ctx.fillStyle = 'white';
          path.context(ctx)(landClipTopo);
          ctx.fill();
          
          ctx.globalCompositeOperation = 'source-in';
          ctx.fillStyle = 'red';
          ctx.fillRect(w/2-200, h/2-200, 200, 200);

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          ctx.save();
          ctx.beginPath();
          
          path.context(ctx)(landClipTopo);
          
          ctx.closePath();
          ctx.clip();
          
          ctx.fillStyle = 'red';
          ctx.fillRect(w/2-200, h/2-200, 200, 200);