2006Unpublished venueRequires access

Geographic location conversion tool

D W Lepard

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Abstract

This Windows application converts geographic coordinates between any pair of ten systems; latitude and longitude as well as different grid and map projection systems. The grid systems supported are Township and Range, British Columbia's NTS-based grid system, the Canada Lands system, the UTM system, and the UTM-based Military system. The projections supported are Mercator, Lambert, Polyconic, and Albers. Transformations can be done in either the NAD27 or NAD83 datums. Note that the Twp Rge grids are assumed to be the same in each datum with the NAD83 coordinates being obtained by application of NTV2 on the NAD27 coordinates. To use the tool the user (1)enters a location and defines its coordinates system on the input source screen, (2)defines the desired output system on the output destination screen, and (3)selects the find button. The application then calculates the location in the destination system. For File I/O the user is first given a screen with a choice of Long or Short Record format, then a screen to select the comma delimited input File. Records are of form: {source},identifier,{destination} and required quantities not specified default to the screen value. The output file has the same name as the input file except the extension is changed to '.new'. The application is a Delphi (Trade Mark) run-time module for Windows XP and 95/98/00.

About this research paper

What this paper is about

This Windows application converts geographic coordinates between any pair of ten systems; latitude and longitude as well as different grid and map projection systems. The grid systems supported are Township and Range, British Columbia's NTS-based grid system, the Canada Lands system, the UTM system, and the UTM-based Military system. The projections supported are Mercator, Lambert, Polyconic, and Albers. Transformations can be done in either the NAD27 or NAD83 datums. Note that the Twp Rge grids are assumed to be the same in each datum with the NAD83 coordinates being obtained by application of NTV2 on the NAD27 coordinates. To use the tool the user (1)enters a location and defines its coordinates system on the input source screen, (2)defines the desired output system on the output destination screen, and (3)selects the find button. The application then calculates the location in the destination system. For File I/O the user is first given a screen with a choice of Long or Short Record format, then a screen to select the comma delimited input File. Records are of form: {source},identifier,{destination} and required quantities not specified default to the screen value. The output file has the same name as the input file except the extension is changed to '.new'. The application is a Delphi (Trade Mark) run-time module for Windows XP and 95/98/00.

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Available abstract

This Windows application converts geographic coordinates between any pair of ten systems; latitude and longitude as well as different grid and map projection systems. The grid systems supported are Township and Range, British Columbia's NTS-based grid system, the Canada Lands system, the UTM system, and the UTM-based Military system. The projections supported are Mercator, Lambert, Polyconic, and Albers. Transformations can be done in either the NAD27 or NAD83 datums. Note that the Twp Rge grids are assumed to be the same in each datum with the NAD83 coordinates being obtained by application of NTV2 on the NAD27 coordinates. To use the tool the user (1)enters a location and defines its coordinates system on the input source screen, (2)defines the desired output system on the output destination screen, and (3)selects the find button. The application then calculates the location in the destination system. For File I/O the user is first given a screen with a choice of Long or Short Record format, then a screen to select the comma delimited input File. Records are of form: {source},identifier,{destination} and required quantities not specified default to the screen value. The output file has the same name as the input file except the extension is changed to '.new'. The application is a Delphi (Trade Mark) run-time module for Windows XP and 95/98/00.

Key concepts: Geographic coordinate system, North American Datum of 1927, Geodetic datum, Computer science, Grid, Map projection, Mercator projection, Computer graphics (images)

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