Display plotted "if loop" data in a worldmap?

I'm working a dataset containing Lat&Lons of multiple flightroutes. I'm plotting these into a figure, since the number of routes varies, using an if-loop plot :

 figure()
 for ii = 1:length(a.asdiflightplanid)
        k=find(b.asdiflightplanid == a.asdiflightplanid(ii));
        plot(b.longitude(k), b.latitude(k))
        hold on;
 end

now I want to plot these into a worldmap (USA) using the Mapping Toolbox:

 worldmap([Minimal_LATPC-10 Maximal_LATPC+10], [Minimal_LONPC-5 Maximal_LONPC+5])
 getm(gca,'MapProjection');
 geoshow('landareas.shp','FaceColor',[224/256 224/256 224/256]);
 geoshow('worldlakes.shp','FaceColor',[117/256 217/256 242/256]);
 geoshow('worldcities.shp','Marker','.','MarkerEdgeColor',[118/256 122/256 121/256]);

the Minimum and Maximimu of Lat&Lon are defined before by the Lat&Lons used in the if-loop plot. But all my tries failed and mostly as a result either just receive an map of the US (geoshowing land, cities etc.), or my flightroutes in a Cartesian coordinate system, or an Error Message that I cannot combine these two plot (especially while using "plotm"). Any suggestion how I can combine these two?

Any help would be appreciated! Thanks

Answer 1

[Philipp Henschel]

Found a solution by myself using the ismember function & creating a table with just the rows i need

A = b(ismember(b.asdiflightplanid, a.asdiflightplanid),:);

and then using geoshow

geoshow(b.latitude, b.longitude);