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utm
PURPOSE ^
UTM Universal Transverse Mercator Cylindrical Projection
SYNOPSIS ^
function [out1,out2,savepts] = utm(mstruct,in1,in2,object,direction,savepts)
DESCRIPTION ^
UTM  Universal Transverse Mercator Cylindrical Projection

  This is a conformal projection with parameters chosen to minimize 
  distortion over a defined set of small areas.  It is not equal area, 
  equidistant, or perspective.  Scale is true along two straight lines on 
  the map approximately 180 kilometers east and west of the central 
  meridian, and is constant along other straight lines equidistent from the 
  central meridian.  Scale is less than true between, and greater than true 
  outside the lines of true scale.
  
  The UTM system divides the world between 80 degrees S and 84 degrees N 
  into a set of quadrangles called zones.  Zones generally cover 6 degrees 
  of longitude and 8 degrees of latitude.  Each zone has a set of defined 
  projection parameters, including central meridian, false eastings and 
  northings and the reference ellipsoid.  The projection equations are the 
  Gauss-Krueger versions of the transverse Mercator.  The projected 
  coordinates form a grid system, in which a location is specified by the 
  zone, easting and northing.
  
  The UTM system was introduced in the 1940's by the U.S. Army.  It is 
  widely used in topographic and military mapping.
DOWNLOAD M-File ^
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CROSS-REFERENCE INFORMATION ^
This function calls:
ANGLEDIM Converts angles from one unit system to another
CLIPDATA Clip map data at the -pi to pi border of a display
DEG2RAD Converts angles from degrees to radians
ISIEEE Returns ONE
RAD2DEG Converts angles from radians to degrees
ROUNDN Rounds input data at specified power of 10
TRIMDATA Trim map data exceeding projection limits
UNDOCLIP Removes object clips introduced by CLIPDATA
UNDOTRIM Removes object trims introduced by TRIMDATA
This function is called by:
SUBFUNCTIONS ^
 


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