Open Data
Search a listing of Government of Alberta open datasets.
Views: 3
Updated
May 3, 2021
Description
This document describes the transformation grids available in Alberta to transform coordinate data from one geometric reference frame to another and vice-versa as well as data analysis results for...
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Views: 373
Updated
April 13, 2021
Description
This document describes the contents of an excel format spreadsheet for 32,971 published ASCMs. The coordinate and elevation information for these ASCMs are based on the NAD83V7.0.0.AB.1...
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Views: 509
Updated
April 13, 2021
Description
In order to facilitate user needs working with coordinate data referenced to different reference frames, Geodetic Control has developed transformation grids to allow users to accurately transform...
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Views: 1
Updated
April 13, 2021
Description
Geodetic Control publishes coordinate data with respect the North American Datum of 1927 (NAD27) and the North American Datum of 1983 (NAD83). The NAD83 coordinate data is further broken down into...
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Views: 1092
Updated
April 12, 2021
Description
The National Transformation Analysis Data tables allows land surveyors, engineers and others to gain insight into the quality of transformation grids that allow them to transformation coordinate...
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Views: 5
Updated
March 11, 2021
Description
Alberta Survey Control Marker (ASCM) index maps are a graphical representation of the provincial spatial referencing system. The index maps display the location of integrated ASCMs in relation to...
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Views: 2
Updated
March 11, 2021
Description
Alberta Survey Control Marker (ASCM) data is available for three reference frames: The North American Datum of 1927 (NAD27), the original derivation of the North American Datum of 1983...
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Views: 269
Updated
March 11, 2021
Description
This Fact Sheet presents a brief overview of provincial readjustments of the Alberta Survey Control network as well as national (cross-Canada) readjustments that define the reference frame in...
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Views: 348
Updated
March 11, 2021
Description
This fact sheet discusses the history of the survey control in Alberta including the development of the Alberta Survey Control (ASC) network, surveying infrastructure, the Spatial Reference Design...
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Views: 2
Updated
March 11, 2021
Description
The Canadian Spatial Reference System (CSRS) derivation of the North American Datum 1983 (NAD83) was first implemented for Alberta Survey Control Markers (ASCMs) in 1999. Since then, Alberta has...