Mapping Toolbox

setpostn

Convert latitude and longitude coordinates to matrix map row and column

Syntax

• [row,col] = setpostn(map,maplegend,lat,long)
  indx = setpostn(map,maplegend,lat,long)
  [row,col,badindx] = setpostn(map,maplegend,lat,long)
  

Description

[row,col] = setpostn(map,maplegend,lat,long) returns the row and column indices of the input regular matrix map with a map legend vector of maplegend for the points specified by the vectors lat and long. All angles are in degrees.

indx = setpostn(map,maplegend,lat,long) returns the single-value indices of map(:).

[row,col,badindx] = setpostn(map,maplegend,lat,long) also returns the indices of lat and long corresponding to points outside of map. These points are always ignored in row and col.

Examples

What are the matrix coordinates in topo of Denver, Colorado, at (39.7ºN,105ºW)?

• load topo
  [row,col] = setpostn(topo,topolegend,39.7,105)
  row =
     130
  col =
     105
  

See Also

ltln2val	Latitude and longitude to matrix entry value
setltln	Row and column to latitude and longitude

setm

shaderel