Magnetic declination varies depending on where you are located on the Earth’s surface, and varies over time. Here is a handy free online magnetic declination calculator that can be used to calculate magnetic declination for any location and date based on the International Geomagnetic Reference Field model.
The OpenStreetMap user community had it’s two millionth account created last week, reaching another milestone in the continuous growth of OpenStreetMap. A pretty big achievement for the opensource movement and a big step forward for the geomatics sector.
More details available at: https://blog.openstreetmap.org/2015/03/12/two-million-contributors/
- OpenStreetMap – Power of the People
- Open data & Open Source software
- free openstreetmap user guides
- Learn How To Map in OpenStreetMap
- Open-data should be for everyone
Synthetic-aperture radar (SAR) is a type of radar data that can be used to generate 3D images of terrestrial object, such as topography. SAR images have multiple applications in remote sensing and topographic mapping of surfaces.
The images are created from radio pulses that are transmitted towards a target area, then received and recorded. The pulse waves are usually transmitted and received with a single beam antenna, and the wavelengths used can be anywhere from a meter to a few centimeters.
The book Land Applications of Radar Remote Sensing demonstrates the use of SAR with topography and land cover. The authors go into extensive details on speckle and adaptive filtering, as well as digital elevation models (DEMs) and terrain modeling.
Land Applications of Radar Remote Sensing [Free Book]
This remote sensing book is completely free to read online as well as download in PDF format.
Chapter 1 Adaptive Speckle Filtering in Radar Imagery
Chapter 2 Large Scale Mapping of Forests and Land Cover with Synthetic Aperture Radar Data
Chapter 3 Estimation of Cultivated Areas Using Multi-Temporal SAR Data
Chapter 4 Combining Moderate-Resolution Time-Series RS Data from SAR and Optical Sources for Rice Crop Characterisation: Examples from Bangladesh
Chapter 5 Change Detection and Classification Using High Resolution SAR Interferometry
Chapter 6 High Resolution Radargrammetry – 3D Terrain Modeling
Chapter 7 Fusion of Interferometric SAR and Photogrammetric Elevation Data
Chapter 8 Mapping of Ground Deformations with Interferometric Stacking Techniques
Chapter 9 SAR Data Analysis in Solid Earth Geophysics: From Science to Risk Management
Chapter 10 Dikes Stability Monitoring Versus Sinkholes and Subsidence, Dead Sea Region, Jordan
[image sources: intechopen.com & trtech.ca]
Surrey launches OpenData Program
Surrey, BC –The City of Surrey launched its open data program today as part of its commitment to an open, transparent and accessible government. The new Open Data Catalogue comprises more data sets than any other municipality in Canada, and will increase efficiency and productivity for staff and public by making the data available to everyone on the City website.
More than 300 data sets comprise the catalog including City information often requested by the public such as:
• Crime statistics
• Restaurant inspection reports
• Statement of Financial Information
• Sustainability indicators
• imagery (orthophotos) & LIDAR
“The City of Surrey is committed to pursuing innovative best practices to allow for transparency and efficiencies through technology,” said Mayor Dianne Watts. “As a progressive City, the launch of the Surrey Open Data Program will empower our citizens by providing them with even easier access to City reports, statistics and information.”
Open data is the idea that certain data should be freely available to everyone to use and republish as they wish, without restrictions from copyright, patents or other mechanisms of control.
“Providing open data improves the public’s ability to easily access, download and utilize City information,” said Councillor Bruce Hayne, Chair of the Investment & Innovation Committee. “It also provides the additional benefit of eliminating the costs associated with related information requests.”
The City’s Open Data Program is a component of its ‘Smart Surrey Strategy’ which seeks to build a city that uses technology and innovation to transform life and work within its region in significant and fundamental ways. Using new and existing technologies and information, the Strategy identifies and implements systems to inform decision-making, create efficiencies and maximize its resources.
For more information, or to access the City’s Open Data Catalogue, visit www.surrey.ca/opendata
QMap – A field data collection program using QGIS
QMap is a field data collection application built using QGIS and python plugins. It is very similar to QGIS but with an interface that makes it easier for most people to use for data collection in the field and was designed to work with windows based tablet devices. Custom forms are built using Qt Designer and follows a convention based approach in order to save configuration. The application also supports QGIS project files (.qgs) so that you can easily use it with your QGIS desktop mapping projects.
To download the application or get more info about QMap go to http://nathanw2.github.com/qmap/
GIS software packages come in many different formats and designed to handle many applications. Some are more robust then others offering a wide range of tools and applications while others are much more simple, the software you use should depend a lot on what your needs are.
There are also many other things to consider such as cost, usability, supported data formats just to mention a few. Canada has many software companies that offer GIS software related packages and many others that sell packages made abroad but available here.
Free GIS software
Geographic Resources Analysis Support System (GRASS) – GRASS software is a free GIS package with multiple functionality including image processing, both raster & vector compatibly, 2D/3D vector network analysis and much more functionality. It operates on various system platforms including shell and a graphical user interfaces.
Google Earth – new twist on traditional GIS that allows you to create 3D maps with existing aerial data sets
Licensed GIS software
PCI Geomatica – Geomatica 2012 from well known Canadian based PCI Geomatics is a powerful easy to learn GIS and Remote sensing package with a wide range of traditional remote sensing, photogrammetry, GIS, cartography, and web development tools.
MapInfo GIS desktop mapping application that now includes CAD tools and .NET program-ability.
ESRI – ArcGIS v10 is the most popular and dependable GIS desktop mapping application available, used world wide.
More software …
Other Mapping Tools
Need to quickly convert spatial coordinates from MTM, UTM or LAT/LONG?
DataAppeal – Online mapping tool that provides Highly Effective & Interactive 3D Maps
Trimble GPS Planner – handy little FREE software package for planning of GPS Missions, allows you to optimize your base destination region with multiple station locations allowing you to determine where it would be best to record observations, determine elevation masks, generate graphs showing satellite coverage, DOP coverage, and create sky plots of GPS satellites.
The City of Toronto has recently celebrated two years of online Open Data service and they have full intention on continuing to build on that success, by stating that they intend to add more data layers and will further develop their site.
Data sets are provided in various standard downloadable file formats such as XLS, CSV, DGN & SHP. All data set contains basic meta info associated with them such as who created the data, date, format, projection, attributes, contact info etc. The bottom line here is the City of Toronto has granted the GIS community a royalty free, non exclusive licence to use, modify, and distribute any of their data sets that they continue to make available via their data catalogue.
The Federal Government produces and acquires data sets in many different areas including health, agriculture, the environment and natural resources. The Government of Canada launched an open data portal [data.gc.ca] earlier this year as part of Canada’s open government initiative. The portal aims to provide Canadians with a single point of access to find and download government Canadian Geospatial Data sets.
“The goal of the Open Data Portal is to create socioeconomic opportunities and promote informed participation by the public by expanding access to federal government data.”
The site provides the ability to search over 150 Canadian Geospatial Data sets that have been sorted into 18 different categories such as Imagery and Basemaps, Atmosphere and Climate, Cadastral and many more. Data is made available for both non-commercial and commercial uses.
Canadian Geospatial Data
Many of the data sets provided here are still the same data that you would get from other places such as GeoGratis, GeoBase or Natural Resources Canada but here they the Government is trying to be more efficient to its citizens by making it easier for GIS users to find Canadian data sets.
The Canadian open data portal [data.gc.ca] should be one of the sites that you go to when you are looking for Canadian geospatial data for your projects. So good luck in your search, I hope you find the data that you need.
Search for Geospatial Data Sets on the Canadian open data portal: http://open.canada.ca/en
If anybody knows of other good sources of Canadian Geospatial Data Sets, then let me know and I will include the information for others to know more about it.
Many Canadian Provinces, Cities and municipalities have been getting involved in the Open Data Resource Initiative such as the City of Totonto, the City o Edmonton, the Province of New Brunswick and many more.
If you are looking for free open source GIS data sites then we suggest that you make a link to CanadianGIS.com GIS data sources, as we are constantly adding more resources to that page as they become available.
LinkedIn is the one of the largest professional networking web sites with over 80 million members and growing rapidly every day. The goal of LinkedIn is to help connect you to your trusted contacts and to help you exchange knowledge, ideas, and opportunities with a broader network of professionals in your field.
The big difference with this social media site compared to others sites such as Face Book is that it is more career orientated and an important place to have your resume, portfolio and other career tools listed.
Join CanadianGIS.com on LinkedIn and get connected with others in GIS
We often get asked for resources to help people learn how to work with GIS. Now that Esri provides a affordable not for commercial version of ArcGIS, we often suggest that they try out these ArcGIS desktop application tutorials provided by the ArcGIS Resource Center
Canadian GIS Education Programs
Contribute Canadian GIS Information, Education Program, Open Data or any other Canadian Geospatial related Info
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