matlab将cie1931图像绘制出来

要在MATLAB中绘制CIE 1931图像，可以按照以下步骤进行操作：

1. 下载cie1931.mat文件，该文件包含了CIE 1931色度图表的数据：

load('cie1931.mat'); 

2. 创建一个新的figure：

figure; 

3. 绘制CIE 1931色度图表：

plot(x,y,'-k', 'LineWidth', 2); 
hold on; 
plot(x(1),y(1),'*k', 'LineWidth', 2); 
plot(x(31),y(31),'*k', 'LineWidth', 2); 
axis equal; 
title('CIE 1931 Chromaticity Diagram'); 
xlabel('x'); 
ylabel('y'); 

4. 绘制等色线：

plot(isoc(:,1),isoc(:,2),'-k', 'LineWidth', 1); 

5. 标注等色线：

text(isoc(1,1),isoc(1,2),'560 nm', 'HorizontalAlignment', 'left', 'VerticalAlignment', 'bottom'); 
text(isoc(11,1),isoc(11,2),'480 nm', 'HorizontalAlignment', 'left', 'VerticalAlignment', 'bottom'); 
text(isoc(21,1),isoc(21,2),'400 nm', 'HorizontalAlignment', 'left', 'VerticalAlignment', 'bottom'); 

6. 绘制Planckian locus：

plot(cct(:,1),cct(:,2),'-k', 'LineWidth', 1); 

7. 标注Planckian locus：

text(cct(1,1),cct(1,2),'100,000K', 'HorizontalAlignment', 'right', 'VerticalAlignment', 'bottom'); 
text(cct(11,1),cct(11,2),'10,000K', 'HorizontalAlignment', 'right', 'VerticalAlignment', 'bottom'); 
text(cct(21,1),cct(21,2),'1,000K', 'HorizontalAlignment', 'right', 'VerticalAlignment', 'bottom'); 

8. 绘制白色点：

plot(0.3127,0.3290,'ok', 'LineWidth', 2); 

9. 标注白色点：

text(0.3127,0.3290,'D65', 'HorizontalAlignment', 'left', 'VerticalAlignment', 'bottom'); 

完整代码如下：

load('cie1931.mat'); 
figure; 
plot(x,y,'-k', 'LineWidth', 2); 
hold on; 
plot(x(1),y(1),'*k', 'LineWidth', 2); 
plot(x(31),y(31),'*k', 'LineWidth', 2); 
axis equal; 
title('CIE 1931 Chromaticity Diagram'); 
xlabel('x'); 
ylabel('y'); 
plot(isoc(:,1),isoc(:,2),'-k', 'LineWidth', 1); 
text(isoc(1,1),isoc(1,2),'560 nm', 'HorizontalAlignment', 'left', 'VerticalAlignment', 'bottom'); 
text(isoc(11,1),isoc(11,2),'480 nm', 'HorizontalAlignment', 'left', 'VerticalAlignment', 'bottom'); 
text(isoc(21,1),isoc(21,2),'400 nm', 'HorizontalAlignment', 'left', 'VerticalAlignment', 'bottom'); 
plot(cct(:,1),cct(:,2),'-k', 'LineWidth', 1); 
text(cct(1,1),cct(1,2),'100,000K', 'HorizontalAlignment', 'right', 'VerticalAlignment', 'bottom'); 
text(cct(11,1),cct(11,2),'10,000K', 'HorizontalAlignment', 'right', 'VerticalAlignment', 'bottom'); 
text(cct(21,1),cct(21,2),'1,000K', 'HorizontalAlignment', 'right', 'VerticalAlignment', 'bottom'); 
plot(0.3127,0.3290,'ok', 'LineWidth', 2); 
text(0.3127,0.3290,'D65', 'HorizontalAlignment', 'left', 'VerticalAlignment', 'bottom'); 

执行代码后，会在MATLAB中生成一个CIE 1931色度图表。