Page 161 - MATLAB Recipes for Earth Sciences

156 7 Spatial Data

function surf.

surf(LON,LAT,ETOPO2)
shading interp
axis equal, view(0,90)
colorbar

This script opens a new figure window and generates a colored surface.

The surface is highlighted by a set of color shades on an overhead view
(Fig. 7.2). More display methods will be described in the chapter on SRTM
elevation data.

ETOPO2 Data Set
20
5000

4000
15
3000
10
2000

5 1000

Latitude 0 0

−1000
−5
−2000

−10 −3000

−4000
−15
−5000

−20
30 35 40 45 50 55 60
Longitude

Fig. 7.2 Display of the ETOPO2 elevation data set. The map uses the function surf for
generating a colored surface. The colorbar provides an information on the colormap used to
visualize topography and bathymetry.