| Mapping Toolbox Release Notes | |
New Features
This section introduces the new features and enhancements added in the Mapping Toolbox 1.2 since the Mapping Toolbox 1.1 (Release 11.0).
Higher Resolution Atlas Data
There are now high-resolution country outlines and more city locations available through the worldhi database. The worldmap command automatically chooses this high-resolution data if the region's area is small enough.
The worldlo atlas file has been updated to make it coincide more closely with high-resolution coastlines and boundaries.
The worldmtxmed MAT-file provides a medium-resolution political world matrix map.
External Data Interface Improved
Importing high-resolution atlas data is now much easier with these two visual interfaces:
demdataui function)
vmap0ui function)
Many of the matrix map data interface functions now automatically concatenate data across separate files.
The external interface now supports the GLOBE digital elevation map data, a product similar to GTPO30. Use the globedem function for working with that data.
New Interactive Interfaces
You can now adjust interactively, on a map display, geographic lines such as great circle tracks, small circles and sectors of small circles. Use the trackg, scircleg, and sectorg functions to make these interactive adjustments. While in an edit mode, you can drag the lines around on the map, modify the lines in a control panel, or read measurements.
There is a new visual interface to create colormaps. Use the cmapui function to invoke this new interface.
New Analysis Functions for Geographic Data
You can use the new elevation function to find the elevation angle of a geographic point.
The new gradientm function performs matrix map data calculations, including gradient, slope, and aspect.
You can use the new los2 and viewshed functions with terrain data to check the line of sight visibility between points or the visibility of entire regions.
Several new functions have been added to support polygon operations.
| Function |
Description |
bufferm |
Compute polygon buffer regions |
polybool |
Perform polygon Boolean operations |
polyjoin |
Combine polygon segments into a NaN-clipped polygon |
polymerge |
Merge polygon segments with abutting ends |
polysplit |
Separate NaN-clipped polygon segments into cell arrays |
polyxpoly |
Polygon intersections |
Other New Functions
Several new functions have been added to support polygon operations.
| Function |
Description |
contourcmap |
Contour-like color jumps on surface objects |
driftcorr |
Compute correction for drift |
driftvel |
Compute drift speed and direction |
flatearthpoly |
Cut polygons at dateline |
lcolorbar |
Labeled colorbar |
mapprofile |
Matrix map values along a path |
str2angle |
String conversion to angle |
| Upgrading from an Earlier Release |