plotting coordinates on a simple map

Hy,

I use R2015a, and I want to plot lat and lon anywhere on a map, but :

Undefined function or variable 'geoplot'.

Error in Untitled (line 7)

geoplot(lat,lon);

how else can i do in a simple way?

Thanks!

Answer 1

[Cris LaPierre]

The geoplot function was introduced in R2018b (see here). You will need to update your version to at least that version to be able to use geoplot.

A separate version was introduced to the Mapping Toolbox in R2022a (see here) If that is what you want to use, you must be on R2022a and have the Mapping Toolbox installed.

[Cristian Martin]

@Cris LaPierre

I managed to do like this:

lat = 9.0077;

lon = 26.0784;

worldmap 'africa'

axis off

getm(gca,'MapProjection')

geoshow('landareas.shp','FaceColor',[0.5 0.7 0.5])

plotm(lat, lon,'o');

Instead I want to set a rectangular map with my coordinates , for example like this:

I want to set the limits of map, i dont care if its a simple view of the map , could yougive me a direction?

[Cris LaPierre]

The shape and lmites of the map can be set by you. You could adjust the following code:

lat =    9.0077;
lon =   26.0784;
axesm('MapProjection','miller','MapLatLimit',[-30 30],'MapLonLimit',[-10 45])
geoshow('landareas.shp','FaceColor',[0.5 0.7 0.5])

plotm(lat, lon,'o');

If you want country borders, that may be a bit trickier if you are lmited to R2015a. I suggest looking at this Answer from 2014

https://www.mathworks.com/matlabcentral/answers/137180-plot-world-map-with-nation-borders-and-defining-facecolor-per-country

[Cristian Martin]

Thanks, @Cris LaPierre!