绘制海岸线
>> set(gca,'LineWidth',2,'FontSize',12,'Ylim',[-90 90],'Xlim',[-180 180],'clim',[-35,45],'Position',[0.05 0.4 0.4 0.45],'XTick',[-180:60:180],'XTicklabel',{'-180W','-120W','-60W','0','60E','120E','180E'},'YTick',[-90:30:90],'YTicklabel',{'-90S','-60S','-30S','0','30N','60N','90N'});%添加坐标经纬度坐标轴
>> hold on
>> load coast
plot(long,lat,'-k','LineWidth',1);
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