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Explore nearly 150 years of Kingston History using Maps and Aerial Images

The Snapshot Kingston online mapping application allows people to explore nearly 150 years of Kingston History using Maps and Aerial Images, simply …

Canadian Arctic High Resolution Digital Elevation Model

Natural Resources Canada (NRCan) has recently produced a new release of the High Resolution Digital Elevation Model (HRDEM) product for the entire Canadian Arctic and made it available to download from the Open Government Portal. It allows …

How COGS became the ‘Go to Place’ for Technical Map Training

The education programs offered at COGS has evolved and changed drastically over the years, however COGS has maintained an international reputation for the ability to design, develop and deliver high quality technical professionals that continue to populate the geospatial community. Find out how to download various literature about the history of COGS.

Game of Thrones GIS Data and Maps

The ‘Learning GIS with Game of Thrones’ guide is aimed to encourage people to learn GIS with a user-friendly open source GIS software while having some fun …

History of Canada in 10 Maps

A History of Canada in 10 Maps consists of several fascinating stories behind some of the people and maps that helped define Canada.

CCA2019 Mapping Our Values – Prince George, BC May 22-24

Communicating with maps and relevant spatial data is an important part of moving ahead through pressure of climate change impacts and other resource economy demands. The conference aims to represent the values of Canadian Cartography.

Newfoundland and Labrador OpenData

Looking for data sets featuring Newfoundland and Labrador? Then you should check out the Newfoundland and Labrador OpenData. They are providing data in various accessible formats numerical tabular styled files as well as common text formats.

Photogrammetry – 3D Maps of Coral Reefs

Photographic studies of coral reefs are being stitched together, piece by piece, using a 3D technology called photogrammetry.

OpenStreetMap Step by Step User Guides

OpenStreetMap User GuideOpenStreetMap User Guide

If you have been following our OpenStreetMap topic over the past few months then I am sure you have come to the realize that it is a community driven project and that anyone can edit OpenStreetMaps. But where does one start?

Below are some resource documents to help you get started using OpenStreetMap created by LearnOSM. These documents provide easy to understand, step-by-step guides that will explain how you can start contributing to OpenStreetMap and using OpenStreetMap data in your projects.

The beginner guide provides step by step instructions to help users get started with OpenStreetMap. It teaches how to create a free account, how to use the map editing tools, and how to collect information to create custom maps with.

OpenStreetMap Beginner Guide

  1. Introduction to OSMOpenStreetMap User Guide
  2. Starting OSM
  3. Editing with Potlatch
  4. Getting Started with JOSM
  5. JOSM Plug ins
  6. Using the GPS
  7. GPS: extrex20
  8. Walking Papers
  9. Editing with JOSM
  10. Imagery Offset
  11. Moving Forward

OpenStreetMap Intermediate Guid

The openstreetmap Intermediate Guide concentrates more on the details of editing and validating as well as shortcuts and ways that people can contribute to the openstreetmap community.

  1. Editing in Detail
  2. Conflict Resolution
  3. Using Orbview Imagery in JOSM
  4. Quality Assurance
  5. Tasking Manager
  6. Editing the Wiki
  7. Creating Custom Presets
  8. Private Data Store

The openstreetmap Advanced Guide is intended for users who have some experience with openstreetmap and have already covered the topics found in the Beginner and Intermediate guides.

 

OpenStreetMap Advanced GuideEditing your maps - OpenStreetMap User Guide

  1. PostGIS Configuration
  2. Cartography with TileMill
  3. Putting Maps on a Website
  4. Github Sharing
  5. WMS Service Configuration
  6. Private Data Storage Configuration
  7. Projections and File Types
  8. SQLite Databases
  9. Virtual Machine Setup

 


Antipodes Maps

Have you ever thought where you would end up if you drilled a tunnel through the center of the Earth and climbed out the other side? Well that location is considered an antipodal point. The antipodes of any place on a globe is the point on the surface which is diametrically opposite to it. Two points that are antipodal to each other are connected by a straight line connecting through the center.

Mathematically, the geographical coordinates of an antipodal point can be calculate as: the latitude of the place you want to find the antipodes must be converted to the opposite hemisphere (eg: 45° North will be 45° South or -45°); the longitude of the place you want to find the antipodes must be subtracted from 180° and the result will be converted to opposite hemisphere (eg: 25° West will be 180° – 25° = 155° East or -155°).

Antipodes Maps

Antipodes Maps

The majority of locations on land do not have land-based antipodes.

In 2013 I wrote an article for GoGeomatics magazine about an interactive maps that revealed what the Antipodes for any given location was. It has turned out to be one of the busiest articles in the magazine, attracting a lot of attention, perhaps because many geomatics people have not taken many geography courses.

The site that I was referencing to in the article seemed to have disappeared some time last winter, therefore no one could use the interactive antipodes calculator. Well now the site is once again active and people can once again learn a little bit of geography in a funny and simple way.

So check out http://www.antipodesmap.com to have a little fun exploring  their interactive antipode calculator map.

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