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Questions tagged [convergence]

meridian convergence is the angle between true north (i.e., the direction of local meridian) and grid north (i.e., the grid's Y-axis)

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Is there a easy way to get the Grid convergence in QGIS?

Is there an easy way to get the angular difference between Grid North & True North in QGIS? This is how I do it: Make a map in print composer Set the map CRS to whatever "WGS 84 / UTM zone&...
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proj4js: calculate meridian convergence

Given a projection and coordinates of a single point, how do I calculate the meridian convergence at that point? Is it even possible? I'm unable to find anything useful using Google. If it is not ...
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Precision Ag and UTM declination

I've written an open source Precision Agriculture application called AgOpenGPS that does everything from auto steer, to mapping, implement and section turn on/off, auto headland turns and more. It's ...
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Calculate Grid Convergence Angle within ModelBuilder Model

I am trying to use the 'Calculate Grid Convergence Angle" tool (from Cartography toolbox -> Data Driven Pages) into ModelBuilder. The tool is pretty simple - (1) import, (2) remove no data (3) ...
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How to represent UTM coordinates on the XY plane?

For the sake of clarity: I am very sorry if this question is inaccurate but I find it difficult to understand different terminologies in the geographic information systems. Let us consider the UTM ...
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Calculate UTM grid convergence using UTM coordinates

What would be the simplest way to arrive at a value for UTM grid convergence for a point given in UTM coordinates? All advice I can find requires that the point be given in latitude/longitude. For ...
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Calculating Grid Convergence

When ESRI tool "Calculate Grid Convergence Angle (Cartography)" is used to calculate line bearing or azimuth, is the bearing referenced to True North or Grid North?
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