Mapping Toolbox

Data Operations
Table 9-20 Interpolation

Function	Description
interpm	Linearly interpolate between latitude and longitude data.
intrplat	Compute interpolated latitude for given longitude.
intrplon	Compute interpolated longitude for given latitude.

Table 9-21 Intersections

Function	Description
crossfix	Compute cross fix positions for bearings and ranges.
gcxgc	Compute intersection points of two great circles.
gcxsc	Compute intersection points of great and small circles.
polyxpoly	Polygon intersections.
rhxrh	Find intersection point between two rhumb lines.
scxsc	Calculate intersection points for pairs of small circles.

Table 9-22 Trimming and Reducing Map Data

Function	Description
maptriml	Trim line vector map to specified region.
maptrimp	Trim patch map data to specified region.
maptrims	Trim surface matrix map data to specified region.
reducem	Reduce number of points in vector data.

Table 9-23 Data Precision

Function	Description
epsm	Accuracy of map computations.
roundn	Round data to specified power of 10.

Geographic Computation

Matrix Map Data Operations