matlab 显示三维地图

clc
% dtedfile = "n39_w106_3arc_v2.dt1";
% attribution = "SRTM 3 arc-second resolution. Data available " + ...
%    "from the U.S. Geological Survey.";
% addCustomTerrain("southboulder",dtedfile,"Attribution",attribution);
viewer = siteviewer("Terrain","southboulder");

tx_Latitude=39.74356;     %改动42.3001;
tx_Longitude=-105.24193;    %改动-71.3504;
tx = txsite('Name','MathWorks Apple Hill',...
    'Latitude',tx_Latitude, ...
    'Longitude',tx_Longitude);
show(tx)