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- %变量
- para_all=[input_train_2017,input_train_2018,input_train_2019...
- ;output_train_2017,output_train_2018,output_train_2019 ];
- %求相关系数矩阵
- corr1=corrcoef(para_all');
- %相关系数矩阵是对称的,令下三角矩阵保持不变,上三角置为0
- corr2=tril(corr1)
- %令上三角置为NaN
- corr2(corr2==0)=NaN;
- img=imagesc(corr3);
- %NaN默认显示为数值最小的颜色,这里让它显示为白色
- set(img,'alphadata',~isnan(corr3));
- colormap(jet)
- c=colorbar;
- caxis([-1,1])
- set(c,'YTick',(-1:0.4:1));
- xlabel('Variables');
- ylabel('Variables');
- %x轴刻度标签
- set(gca,'XTick',(1:9),'xticklabel',[string('Year'),string('Doy'),string('Hour'),...
- string('P'),string('T'),string('RH'),string('ZTD'),string('HTG'),string('Rain')],'FontSize',10);
- %Y轴刻度标签
- set(gca,'YTick',(1:9),'yticklabel',[string('Year'),string('Doy'),string('Hour'),...
- string('P'),string('T'),string('RH'),string('ZTD'),string('HTG'),string('Rain')],'FontSize',10);
- %图片大小
- set(gcf,'unit','centimeters','position',[6,4,12,9])
- %保存为分辨率300的tiff图片
- sfname='corr';
- print(gcf,sfname,'-r300','-dtiff');
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