long and lat map plot

does anyone know how to add a star (red star) on a certain longitude and latitude?

right now i have lon=-91.14 and lat=30.45

Answer 1

[Chad Greene]

If you have the Mapping Toolbox and you have a map initialized already,

plotm(30.45,-91.14,'rp')

If you do not have the mapping toolbox, this is probably better:

plot(-91.14,30.45,'rp')

The 'rp' option specifies a red pentagram.