MATLAB多子图统一colorbar：共享颜色条设置方法

原始参考链接

   必须要有这个设置

   不然colorbar是变化的

子图1设置

caxis([-0.5,0.5]);
colormap(jet);

自己在这块先设置显示的范围，以及选用 jet

   最后再单独开个axes，添加colorbar

有几个做colorbar图做的不错的

clc, clear, close all;
 
top_margin = 0.03; % top margin
btm_margin = 0.03; % bottom margin
left_margin = 0.03;% left margin
right_margin = 0.15;% right margin
 
fig_margin = 0.08; % margin beween figures(sub) 
 
row = 4; % rows
col = 3; % cols
 
% Generate some test data to show
x = 0 : 1: 6; 
y = 0 : 1.5: 9;
 
f = y' * x;
 
% '54' and '0' respectively represent max(f) and min(f)
% both need to be calculated or traversed to determine
% for convenience, I directly use results
clim = [0 54];
 
% Calculate figure height and width according to rows and cols 
fig_h = (1- top_margin - btm_margin - (row-1) * fig_margin) / row;
fig_w = (1 - left_margin - right_margin - (col-1) * fig_margin) / col;
 
for i = 1 : row
    for j = 1 : col
        % figure position: you can refer to 'help axes' to review the
        % parameter meaning, note that original point is lower-left
        position = [left_margin + (j-1)*(fig_margin+fig_w), ...
           1- (top_margin + i * fig_h + (i-1) * fig_margin), ...
           fig_w, fig_h]
       axes('position', position)
       % draw colorful pictures... 
       imagesc(f, clim); 
       
       % title, labels
       title(['fig
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