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

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Thao Linh Tran
Thao Linh Tran 2021-6-6
评论： Cristina Radin 2022-2-2
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);

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回答（3 个）

wentao ma
wentao ma 2021-12-1
coastlon(abs(diff(coastlon))>180+1)=nan;
  1 个评论
Cristina Radin
Cristina Radin 2022-2-2
Ran in:
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)

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KSSV
KSSV 2021-6-6
编辑：KSSV 2021-6-6
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);
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SALAH ALRABEEI
SALAH ALRABEEI 2021-6-6
Make sure to clear the figure before plotting because the coast.mat does not have these lines.

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