Matlab上 fr = fopen('d:\Matlab\长期纪录2014-3-11.txt', 'r');data=fscanf(fr,'%f',[1,inf]);axis([0 90000 -8 6]);plot(data)title(['厚度仪长期测试数据分析'], 'FontName','Times New Roman','FontSize',10);set(gca,'XTicklabel',[0,3,6,9,12,15,18,21,24])xtick=get(gca,'xtickla