I can't see ground information

I have wrritten the code that the example are explaining.

But as you see, the ground informations are not shown. There are only black spaces.

How can I solve this problem?

My code :
viewer1 = siteviewer("Basemap","openstreetmap","Building","canarywharf.osm");
tx = txsite("Name","Small cell transmitter", ...
    "Latitude",51.50375, ...
    "Longitude",-0.01843, ...
    "AntennaHeight",10, ...
    "TransmitterPower",5, ...
    "TransmitterFrequency",28e9);
rtpm = propagationModel("raytracing", ...
    "Method","sbr", ...
    "MaxNumReflections",0, ...
    "BuildingsMaterial","perfect-reflector", ...
    "TerrainMaterial","perfect-reflector");
coverage(tx,rtpm, ...
    "SignalStrengths",-120:-5, ...
    "MaxRange",250, ...
    "Resolution",3, ...
    "Transparency",0.6)
rx = rxsite("Name","Small cell receiver", ...
    "Latitude",51.50216, ...
    "Longitude",-0.01769, ...
    "AntennaHeight",1);
los(tx,rx)
rtpm.MaxNumReflections = 3;
clearMap(viewer1)
raytrace(tx,rx,rtpm)
ss = sigstrength(rx,tx,rtpm);
disp("Received power using perfect reflection: " + ss + " dBm")

Answer 1

[Pratyush]

Hi Byeongjo,

I understand that the "siteviewer" function does not show the ground information.

To display the ground information in the MATLAB "siteviewer", you can adjust the Basemap settings to include terrain information.

Here's how you can modify the code to include terrain information:

viewer1 = siteviewer("Basemap","osm","Buildings","canarywharf.osm","Terrain","terrain");

Follow the following documentation link to know about "terrain" property in "siteviewer" and how to access basemap and terrain choices in "siteviewer".

https://in.mathworks.com/help/antenna/ref/siteviewer.html#mw_8de5e539-e9d4-41ff-9e98-ccaefb0ffcdb

https://in.mathworks.com/help/antenna/ug/access-basemaps-and-terrain-in-site-viewer.html

Hope that helps.

[Byeongjo]

Thanks to you, I was able to resolve the error. Appreciate your help!