colormap jet;colorbar;
caxis([-3,3])
set(gca,'FontSize',fontsize,'FontName','Times New Roman','FontWeight','bold');
2：contourf画图与使用griddata v4方法插值
colormap jet;colorbar;
caxis([-3,3])
set(gca,'FontSize',fontsize,'FontName','Times New Roman','FontWeight','bold');
figure(2)
[xq,yq]=meshgrid(1:0.1:10,1:0.1:10);
value_q=griddata(x,y,value,xq,yq,'v4')
[C,h]=contourf(xq,yq,value_q,20);
set(h,'Color','none');
colormap jet;colorbar;
caxis([-3,3])
set(gca,'FontSize',fontsize,'FontName','Times New Roman','FontWeight','bold');
3：image画图
pd = makedist('Normal')
value=random(pd,[10,10])
image(x,y,value,'CDataMapping','scaled')%后面的参数是根据数值大小选取colorbar着色范围
% set(gca,'YDir','normal'); %若y轴为时间，可将y轴倒置
colormap jet;colorbar;
