How to rise the resolution of a map in MATLAB using geoshow?

I would like to ask a question about resolution/quality of a map in MATLAB.

I am using geoshow command but I observe tht my map has too many pixels.

Could I solve it? Is there any way to make it?

Answer 1

[Chunru]

You can try to obtain higher resolution geo data (finer grid and more data points). Sometimes, interpolation of the coarse data may also help a bit.