Zoom in and out on map

I am building a tracking system and have writted a simple block of code as below. I succesfully showed the recorded points.

However, I cannot zoom in and out the map like in MATLAB.

I intend to embed the iframe code in a website. Is there any solution for this? Thank you in advance.

lat = thingSpeakRead(1060533,'Fields',5,'ReadKey','T54K82E8FJW6GKVT','NumPoints',10,'Timeout',50);
lon = thingSpeakRead(1060533,'Fields',6,'ReadKey','T54K82E8FJW6GKVT','NumPoints',10,'Timeout',50);

gx = geoaxes;

geoscatter(gx,lat,lon,'filled');
geobasemap('streets');