Mapping Toolbox

antipode

Determine the antipodes of a geographic point

Syntax

• [newlat,newlong] = antipode(lat,long)
  [newlat,newlong] = antipode(lat,long,units)
  

Description

[newlat,newlong] = antipode(lat,long) returns the geographic coordinates of the points exactly opposite on the globe from the input points given by lat and long.

[newlat,newlong] = antipode(lat,long,units) specifies the standard angle units string, where units is any valid angle units string. The default value is 'degrees'.

Examples

Given a point (43ºN, 15ºE), find its antipode:

• [newlat,newlong] = antipode(43,15)
  newlat =
           -43
  newlong =
           -165
  

• or (43ºS, 165ºW). Perhaps the most obvious antipodal points are the North and South Poles. The command antipode demonstrates this:

  • [newlat,newlong] = antipode(90,0,'degrees')
    newlat =
             -90
    newlong =
             180
    

  Note that in this case, longitudes are irrelevant because all meridians converge at the poles.

angledim

areaint