elemoine

#!/bin/bash
# https://gist.github.com/elemoine/27748e205d36a9006190

# Install packages.
sudo apt-get install kvm cloud-utils

# Download an Ubuntu cloud image.
wget http://cloud-images.ubuntu.com/releases/14.04/release/ubuntu-14.04-server-cloudimg-amd64-disk1.img -O disk.img.dist

# Create user-data file for devstack.

elemoine

{
  "attributes": {
    "map": {
      "dpi": 72,
      "center": [
        681185,
        6412222
      ],
      "projection": "EPSG:3857",
      "scale": 10000,

elemoine

OpenLayers 3 – clip layer with geometry

This gist shows how to clip a layer with a geometry, i.e. a shape with geographical coordinates.

elemoine

This gist shows how to create a mask on the map using shift-drag. This is in response to a question on the ol3-dev mailing list.