MATLAB将矩阵转化为灰度图
(2015-05-26 16:43:41)
标签:
matlab |
分类: MATLAB |
MATLAB将矩阵转化为灰度图
| 能源 | 材料 | 工业 | 可选消费 | 日常消费 | 医疗保健 | 金融 | 信息技术 | 电信服务 | 公用事业 | |
| 能源 | 1.00 | 0.96 | 0.98 | 0.88 | 0.94 | 0.61 | 0.96 | 0.80 | 0.98 | 0.89 |
| 材料 | 0.96 | 1.00 | 0.94 | 0.90 | 0.95 | 0.71 | 0.96 | 0.83 | 0.90 | 0.88 |
| 工业 | 0.98 | 0.94 | 1.00 | 0.84 | 0.91 | 0.54 | 0.93 | 0.73 | 0.97 | 0.90 |
| 可选消费 | 0.88 | 0.90 | 0.84 | 1.00 | 0.89 | 0.85 | 0.94 | 0.94 | 0.80 | 0.82 |
| 日常消费 | 0.94 | 0.95 | 0.91 | 0.89 | 1.00 | 0.72 | 0.94 | 0.84 | 0.90 | 0.90 |
| 医疗保健 | 0.61 | 0.71 | 0.54 | 0.85 | 0.72 | 1.00 | 0.74 | 0.90 | 0.48 | 0.64 |
| 金融 | 0.96 | 0.96 | 0.93 | 0.94 | 0.94 | 0.74 | 1.00 | 0.90 | 0.92 | 0.87 |
| 信息技术 | 0.80 | 0.83 | 0.73 | 0.94 | 0.84 | 0.90 | 0.90 | 1.00 | 0.70 | 0.75 |
| 电信服务 | 0.98 | 0.90 | 0.97 | 0.80 | 0.90 | 0.48 | 0.92 | 0.70 | 1.00 | 0.85 |
| 公用事业 | 0.89 | 0.88 | 0.90 | 0.82 | 0.90 | 0.64 | 0.87 | 0.75 | 0.85 | 1.00 |
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A=[
1.00
0.96
0.98
0.88
0.94
0.61
0.96
0.80
0.98
0.89
mat =
A; %#
A n-by-n matrix of random values from 0 to 1
imagesc(mat); %#
Create a colored plot of the matrix values
colormap(flipud(gray)); %#
Change the colormap to gray (so higher values are
%#
textStrings = num2str(mat(:),'%0.2f'); strings from
the matrix values
textStrings = strtrim(cellstr(textStrings)); %#
Remove any space padding
[x,y] = meshgrid(1:5); %#
Create x and y coordinates for the strings
hStrings = text(x(:),y(:),textStrings(:),... %#
Plot the strings
'HorizontalAlignment','center');
midValue = mean(get(gca,'CLim')); %#
Get the middle value of the color range
set(gca,'XTick',1:10,... %#
Change the axes tick marks
'XTickLabel',{'能源','材料','工业','可选消费','日常消费','医疗保健','金融',...
'信息技术','电信服务','公共事业'},... %#
'YTick',1:10,...
'YTickLabel',{'能源','材料','工业','可选消费','日常消费','医疗保健','金融',...
'信息技术','电信服务','公共事业'},...
'TickLength',[0
0]);
[x,y] = meshgrid(1:10); %#
Create x and y coordinates for the strings
hStrings = text(x(:),y(:),textStrings(:),... %#
Plot the strings
'HorizontalAlignment','center');
midValue = mean(get(gca,'CLim')); %#
Get the middle value of the color range
textColors = repmat(mat(:)
>
midValue,1,3); %#
Choose white or black for the
%#
%#
%#
set(hStrings,{'Color'},num2cell(textColors,2)); %#
Change the text colors |

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