Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Hot answers tagged

14

From the links posted as comments I identified a couple of misconceptions I had about projections and gathered this quick summary. It should be mentioned that many projections don’t truly preserve any attribute. Their intent is typically to minimize all types of distortion thereby not eliminating it in any specific property. Jack of all trades, master of ...


10

UPDATE: 2016 FSA Census Boundary files are now available (as of Sept 13, 2017 according to their site). UPDATE: Stats Canada has since released the Forward Sortation Areas Boundary files (as of February 5, 2013 according to their site). Download Page for all 2011 Census Boundary Files Download Page for all 2016 Census Boundary Files Statistics Canada has ...


7

That isn't garbage, that's UTF-8 being displayed as CP1252. This Stackoverflow topic may help you on your way, as may this one (if you're in Python).


7

It actually seems very reasonable from a price perspective. I would specify it meets XXXX standard of accuracy and I would specify the file be in las 1.2 (or another spec as desired). Specify the classes you require and the RMSEz that is acceptable (often just vertical in lidar). 7 points per m is high. I find this document very useful. It spells out what ...


6

Note that the Postal Code FSA Conversion files will be freely available as of Oct 24, 2012 as per the new data freedom initiative. See here for details.


6

Canada wide: GeoGratis GeoBase GeoConnections Atlas of Canada Open Data Pilot Project Provincial: Manitoba Land Initiative Service New Brunswick Information Services Corporation (Saskatchewan) GeoNova (Nova Scotia) Alberta Geological Survey AltaLIS (Alberta) GeoBC (British Columbia) Edit: Updated links


6

As Jason pointed out you've got a mismatch between the character set of the data and the character set of locator. It's probably the geodb that doesn't match the data and vice versa. Make sure the geodb is in UTF-8. If you want to retain the accented characters and still get 100% match with the unaccented spellings, store unaccented versions of the names in ...


6

I have two ideas: Check out the Statistics Canada site for .shp downloads. It looks like "Census Subdivisions" is what you are after, although there may be more detailed products there. An alternative is to use the ArcGIS basemaps in ArcMap (File > Add Data > Add Base Map > National Geographic). These are great for displaying down to the street level in ...


5

Well here's a few: Proper Databases (Cheap / free but of variable quality) - you will probably have to convert to mySQL yourself as this is not a standard geospatial format given its relatively poor geo extensions. TheWebMiner GEO Factual Places Cloudmade OpenStreetMap APIs (usage restrictions, generally free to a certain level of use) Foursquare Google ...


5

This looks to me like a one degree wide and half degree high sheet layout of topographic maps similar to NTS. Created with QGIS using vector raster. The numbering looks like a combination of West and North coordinates in 1/10 degrees. This map contains an overview of 1:100,000 maps with the same numbering scheme: http://www.mnr.gov.on.ca/stdprodconsume/...


5

The forward sortation area (FSA) is only the first 3 characters in the six character Canadian postal code. You need to include the local delivery unit if you want unique values. From here:


5

EPSG has added it as 6647. At Esri, I have it in a development build, but it's not in ArcGIS 10.3 (hopefully 10.3.1). Here's the Esri WKT for it: VERTCS["CGVD2013_height",VDATUM["Canadian_Geodetic_Vertical_Datum_of_2013"],PARAMETER["Vertical_Shift",0.0],PARAMETER["Direction",1.0],UNIT["Meter",1.0],AUTHORITY["EPSG",6647]] This document on height ...


5

This is caused by points too far north, and too far west. For the too far north, it occurs when the source is not in lat-long, but another projection such as Lambert conformal conic (used by the government), and then the data is changed to a un-projected coordinate system. The solution is to remove the few vertices that are too far up north. The second ...


5

You can use the data from openstreetmap. The data is free and can be obtained from overpass api. Here is a link to overpass turbo


4

Refractions Research offers self-paced PostGIS training courses. They also have other PostGIS training packages. You can check a sample outline here. They're based on British Columbia. Refractions Research Suite 419 – 1207 Douglas Street Victoria, British Columbia Canada, V8W-2E7 Phone: (250) 383-3022


4

The default projection in D3 is the U.S.-centric d3.geo.albersUsa projection. This is a composite projection design to display the 48 contiguous United States, Hawaii, Alaska and Puerto Rico. If you want to make a map of Canada, you’ll have to specify the appropriate projection rather than relying on the default.


4

Natural Resources Canada Geogratis (CanVec) 1:50,000 is the best and most up to date Canada-wide data available, at Open Data Canada. This is the same data used in the official CanTopo CanMatrix 1:50000 paper maps and the same data that's used for the ArcGIS Online World Topographic basemap altough GeoBase, Agriculture and Agri-Food Canada are also listed. ...


4

Your raster layer is Pacific centered (0 ~ 360 degrees), while the bluish polygon is in -180 ~ +180 degrees space. You will have to decide which x-range you will use. I think most people will choose to modify vector layer since Affine Transformation is available in many GIS software. For instance, QGIS has Translate tool (Processing Toolbox > Vector ...


3

Those look like the grids for the National Topographic System in Canada. They can be downloaded from Geogratis as the Vector Indexes of the National Topographic System of Canada. They are available as kmz or shp. They can be converted to KML with ogr2ogr from gdal.


3

There are similar questions: Seeking GIS data for fast food industry? POI Datasets for North America Seeking shapefiles of business locations that contain answers that may guide you to find the Points of Interest data you are looking for. Particularly take a look at OpenStreetMap, SimpleGEO, and POI Factory. Additionally, you should browse the questions ...


3

As dassouki mentions this is not going to be done cheaply. The GeoPinpoint Suite is geocoding millions of records each year and is applying an advanced address-parsing technology ensuring superior match rates even with the most incomplete data. GeoPinpoint Suite's innovative modular design allows the software to encompass future enhancements without ...


3

I believe you can download it from Natural Resources Canada, but you will need to apply for a login (free): http://www.geod.nrcan.gc.ca/online_data_e.php Apparently GeoBase provides them as grouped shapefiles based on your selected location, but I'm not entirely sure if it is complete. edit: I meant GeoBase not GeoConnections.


3

For British Columbia we get 98% of our data from http://www.icisociety.ca/web-map/public-web-map.htm This data is very current data - see http://www.icisociety.ca/web-map/upload-history.htm [Members get access to more datasets] Other posts mention the other sources we use. Though do not forget- Open Street Map has very good quality data for Canadian ...


3

My big problem with using CanVec was always the size of the data set, its structure and my lack of resources as an amateur/student. It's getting cheaper to get access to powerful computing facilities though (via Amazon, etc.) Plus I built a little program that will efficiently extract one or more feature sets into PostGIS sql by matching the feature ID. ...


3

The VBA procedure still works. (The smiley button is not there). I loaded all data for Ontario into the SymbologyToolcanvec.mxd from the 11 File Geodatabases. Assuming the .style file is in "C:\Users\USERNAME\AppData\Roaming\ESRI\Desktop10.0\ArcMap" Open VBA Customize -> VBA Macros -> Visual Basic Editor from the main menu. Once in VBA Expend the Project ...


3

Geobase would have been my first suggestion but aside from the way the tiles are separated to relatively small areas, I have personally had many issues with the data itself. See our own wiki for more details. If I remember correctly then 1 arc-seconds (about 30m resolution) (SRTM1) coverage only includes continental US in and parts of Canada but does not ...


3

Canadian Hydrographic Service may be your only choice, I'm afraid. LIO is supposed to have line and point bathymetry data, but their login and search tools are going off into hyperspace for me right now. My friend was lucky in that the lakes he was interested in had just had a very detailed survey in advance of the G8, and CHS (apparently) don't maintain ...


3

Have you tried the LIO Metadata portal? Search for Crown Land Use Atlas and you'll find a couple of items that may be what you're looking for.


3

The AB_CSRS file seems to have been replaced with abcsrsv4.dac. Esri hasn't added another transformation to use the new file yet (we don't have a copy). You could rename it and use the NAD_1983_To_WGS_1984_8 transformation, or create a new transformation with the geoprocessing tool, Create Custom Geographic Transformation. You will still have to change the ...


3

It is usually more meaningful to compare quotes from different providers for the same situation/contract. However, I tried to make a rough comparison with the work of Hummel et al. (2011). OP. 30k CAD / (70 Km² x 247.105 acres/Km²) = $1.73 CAD/acre or $1.92 USD/acre. (Considering a ratio of CAD/USD = 1.11 in Oct/2014). Hummel et al. (2011). They report ...


Only top voted, non community-wiki answers of a minimum length are eligible