Borrar filtros
Borrar filtros

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

3 visualizaciones (últimos 30 días)
Thao Linh Tran
Thao Linh Tran el 6 de Jun. de 2021
Comentada: Cristina Radin el 2 de Feb. de 2022
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);
  2 comentarios
Chunru
Chunru el 6 de Jun. de 2021
If you have mapping toolbox:
f= worldmap('world')
plotm(Coast.lat, Coast.lon)
Thao Linh Tran
Thao Linh Tran el 6 de Jun. de 2021
Thank you but I wanted to use plot instead of plotm.

Iniciar sesión para comentar.

Respuestas (3)

wentao ma
wentao ma el 1 de Dic. de 2021
coastlon(abs(diff(coastlon))>180+1)=nan;
  1 comentario
Cristina Radin
Cristina Radin el 2 de Feb. de 2022
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)

Iniciar sesión para comentar.


KSSV
KSSV el 6 de Jun. de 2021
Editada: KSSV el 6 de Jun. de 2021
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);
  5 comentarios
KSSV
KSSV el 6 de Jun. de 2021
180 is added to X and Y, lon and lat are also changed.
Thao Linh Tran
Thao Linh Tran el 6 de Jun. de 2021
But the Western North Pacific is splitted into two parts by that way.

Iniciar sesión para comentar.


SALAH ALRABEEI
SALAH ALRABEEI el 6 de Jun. de 2021
Make sure to clear the figure before plotting because the coast.mat does not have these lines.
  2 comentarios
Thao Linh Tran
Thao Linh Tran el 6 de Jun. de 2021
Thanks, but the purpose is to not split the Western North Pacific into two parts as in your fig.

Iniciar sesión para comentar.

Etiquetas

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by