matlab 同時畫多條折線

clc;

clear;

load('D:\MATLAB\toolbox\fengweiigg-GRACE_Matlab_Toolbox-6e91b05\GRACE_results\result-ys\grid_data.mat')

water1=textread('C:\Users\admin\Desktop\西部.txt','%f');

water2=textread('C:\Users\admin\Desktop\東北部.txt','%f');

water3=textread('C:\Users\admin\Desktop\中南部.txt','%f');

water4=textread('C:\Users\admin\Desktop\中北部.txt','%f');

plot(time,water1,'-sr',time,water2,'-sg',time,water3,'-sb',time,water4,'-sk'); 

legend('西部','東北部','中南部','中北部');

box off %去除上右邊框刻度

xlabel('Year'); 

ylabel('Equivalent water height (cm)'); 

title('Terrestrial water change in China from GRACE');