How to remove horizontal lines as plotting 0-360 degree map

Hi, I am using following codes to plot a 0-360 degree map, can anyone please help to show me how to remove the horizontal lines on the map created. Athough plot(X,Y,'.') does not show those lines, I wanted to plot the coastlines instead of points. Thanks in advance!

Coast=load('Coast.mat');
X=Coast.long;
Y=Coast.lat;
X(X<=0)=X(X<=0)+360; 
plot(X,Y);

[Chunru]

If you have mapping toolbox:

f= worldmap('world')
plotm(Coast.lat, Coast.lon)

[Thao Linh Tran]

Thank you but I wanted to use plot instead of plotm.

Answer 1

[wentao ma]

coastlon(abs(diff(coastlon))>180+1)=nan;

[Cristina Radin]

Hi! You are right, thank you!

The complete code:

load coastlines

coastlonWrapped = wrapTo360(coastlon);
index=abs(diff(coastlonWrapped))>180+1;
pos=find(index==1) %to be sure 

pos = 9×1

371 4311 4420 4991 4994 4998 5076 8063 8077

coastlonWrapped(pos)=NaN;

plot(coastlonWrapped,coastlat)

Answer 2

[KSSV]

Coast=load('Coast.mat');
X=Coast.long;
Y=Coast.lat;
% X(X<=0)=X(X<=0)+360; 
X = X+180 ; Y = Y+180 ;
plot(X,Y);

[Thao Linh Tran]

Thank you but this gives the [-180,180] map instead of [0 360].

[KSSV]

Edited the answer.

[Thao Linh Tran]

Hi KSSV, that only changes the Xticklabels not the real longitudes. The purpose is to plot the whole region of the Western North Pacific.

[KSSV]

180 is added to X and Y, lon and lat are also changed.

[Thao Linh Tran]

But the Western North Pacific is splitted into two parts by that way.

Answer 3

[SALAH ALRABEEI]

Make sure to clear the figure before plotting because the coast.mat does not have these lines.

[SALAH ALRABEEI]

[Thao Linh Tran]

Thanks, but the purpose is to not split the Western North Pacific into two parts as in your fig.