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Copan should do exactly what you need. It's a free, GUI-based Windows COGO tool for land or topographic surveyors. (I was heavily involved in its development.) From the Field Bearings Processing section of the User Manual: Use this module to process raw field data from hand-held survey instruments such as compass, inclinometer and rangefinder. Copan ...


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You can try GNU GAMA. According to its project page: GNU Gama is a project dedicated to adjustment of geodetic networks. Adjustment of geodetic networks means that we have a set of points with given coordinates coordinates of some points and a set of observations among them. What is typical of adjustment of special geodetic measurements is ...


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What you're after is a Digital Elevation Model (DEM) (wikipedia) which represents surface elevation as a single band raster (i.e. your 2D height map). One starting point for getting DEM data is the USGS EarthExplorer data portal (http://earthexplorer.usgs.gov/) which allows you to select a region and search for data. If you use the map to zoom to Istanbul ...


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Web Mercator is rarely the right answer, unless you want pictures that line up with other stuff in Web Mercator. An extract from the NGA's Implementation Practice Web Mercator Map Projection, which is worth a read in full: 5.2 The Web Mercator map projection has several defining mathematical formulas and parameters that make data referenced to Web ...


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It depends on the extent of your area of interest. Transverse mercator is conformal along the central meridian, while Mercator (in its original form) is conformal along the center latitude. That does not have to be the aequator. So if your area is mostly north-south orientated, tmerc is better, if it is more east-west, merc is better. Transverse is ...



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