altatama.blogg.se

Strict application of the above formulas, with south latitudes negative, will result in the derivation of the correct Eastings and Northings. This ensures that instead of points inĭifferent zones having the same eastings, every point in the country, irrespective of its projection zone, will have a unique set of projected system coordinates. However each zone central meridian takes a false easting of 500000m prefixed by an identifying zone number. Alternatively, as in the case of Argentina's Transverse Mercator (Gauss-Kruger) zones, the origin is at the south pole with a northings of zero.

Note that the false northings of the origin, if the equator, will need to be large to avoid negative northings and for the UTM projection is in fact 10,000,000m. Mu1 = M1/ĭ = (E - FE)/(nu1*k0), with nu1 = nu for lat1įor areas south of the equator the value of latitude lat will be negative and the formulas above, to compute the E and N, will automatically result in the correct values.

Where lat1 may be found as for the Cassini projection from: The reverse formulas to convert Easting and Northing projected coordinates to latitude and longitude are: With lat in radians and M0 for lat0, the latitude of the origin, derived in the same way. Where T = tan^2(lat) nu = a /(1 - esq*sin^2(lat))^0.5Ī = (lon - lon0)cos(lat), with lon and lon0 in radians. The formulas to derive the projected Easting and Northing coordinates are in the form of a series as follows:Įasting, E = FE + k0*nu Users are encouraged to use that document rather than the text which follows as reference because limitations in the transcription will be avoided. UTM Corner Rulers Download UTM Corner Rulers in PDF format.Note: These formulas have been transcribed from EPSG Guidance Note #7-2.Free Download Microsoft Office 2007 Setup Exe For Windows Xp. To plot a point onto your map use a UTM Box tool that is open in the center. Grids like this work best for determining the coordinates of a mark on the map. The Best Free Map Software app downloads for Windows: Google Maps with GPS Tracker Global Mapper (64-Bit) KML Buffer Tool QGIS (64-bit) UTM Coordinate.

For example on a 1:24,000 scale USGS topo map the UTM grid lines are 1000m apart. UTM Grids The UTM grid overlays are useful to interpolate one decimal place beyond the grid interval on the map.