Mapping Toolbox

maptriml

Trim line vector map to a specified region

Syntax

[lat,lon] = maptriml(lat0,lon0,latlim,lonlim)

Description

[lat,lon] = maptriml(lat0,lon0,latlim,lonlim) returns filtered NaN-delimited vector map data sets from which all points lying outside the desired latitude and longitude limits have been discarded. These limits are specified by the two-element vectors latlim and lonlim, which are two-element vectors of the form [south-limit north-limit] and [west-limit east-limit], respectively.

Examples

A simple example:

lat0 = [1:10,9:-1:0]; lon0 = -30:-11;
[lat,lon] = maptriml(lat0,lon0,[3 7],[-29 -12]);
[lat lon]
ans =
   NaN   NaN
     3   -28
     4   -27
     5   -26
     6   -25
     7   -24
   NaN   NaN
     7   -18
     6   -17
     5   -16
     4   -15
     3   -14
   NaN   NaN

Notice that trimmed line segment ends have NaNs inserted at trim points.

See Also

maptrimp	Trim patch map data to specified region
maptrims	Trim surface matrix map data to specified region

maps

maptrimp