clear all
close all
a = csvread(['grid1.csv'],1,0);
alpha_1 = a(:,4);
x_1 = a(:,9);

a = csvread(['grid2.csv'],1,0);
alpha_2 = a(:,4);
x_2 = a(:,9);

a = csvread(['grid3.csv'],1,0);
alpha_3 = a(:,4);
x_3 = a(:,9);

figure
plot(x_1,alpha_1,'-s','linewidth',2)
hold on
plot(x_2,alpha_2,'-d','linewidth',2)
hold on
plot(x_3,alpha_3,'-*','linewidth',2)
xlabel('x/m')
ylabel('alpha')
set(gca,'fontsize',20)
legend('coarse','medium','fine')
print(gcf,'-depsc','-painters','gridcheck.eps')


