相关性分析主要源码
pm10=[352,179,383,463,670,451,426,302,566]
pm25=[251,93,189,262,427,284,264,177,346]
plot(pm10,pm25,'+');//绘出散点图
lsline;//根据散点图绘出直线
a=corrcoef(pm10,pm25);//获取相关系数矩阵
s=['pm10','pm25']
text(pm10,pm25,s);//在线上加标注
title('pm10、pm25相关性分析');
legend('pm10','pm25');
xlabel('PM10(ug/m3)');
ylabel('PM2.5(ug/m3)');
grid;//添加网格
axis square;//坐标轴成正方形