MATLAB | 这些花里胡哨的热图怎么画

好早之前写过一个绘制相关系数矩阵的代码，但是会自动求相关系数，而且画出来的热图只能是方形，这里写一款允许nan值出现，任意形状的热图绘制代码，绘制效果如下：

如遇到bug请后台提出，并去gitee下载更新版本

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教程部分

1 基础绘制

假设有个随机数矩阵，绘图：

Data=rand(15,15);
SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw();

假设存在负数：

Data=rand(15,15)-.5;
SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw();

假设存在nan:

Data=rand(12,12)-.5;
Data([4,5,13])=nan;
SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw();

假设非方阵：

Data=rand(25,30);
SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw();

颜色怎么换，在后面会讲到。

2 显示文字

使用setText方法显示文字：

Data=rand(12,12)-.5;
Data([4,5,13])=nan;SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw();SHM.setText();

如果要修饰或显示文字请在修改颜色后进行。

3 修改形状

形状有以下几个可选项：

• sq : 方形(默认)
• pie : 饼图
• circ : 圆形
• oval : 椭圆形
• hex : 六边形
• asq : 自带调整大小的方形
• acirc : 自带调整大小的圆形

figure() 
Data=rand(12,12)-.5;
SHM=SHeatmap(Data,'Format','oval');
SHM=SHM.draw(); figure() 
Data=rand(12,12)-.5;
SHM=SHeatmap(Data,'Format','pie');
SHM=SHM.draw(); 

展示一下全部类型：

sq

pie

circ

oval

hex

asq

acirc

4 颜色范围

新版本使用clim老版本使用caxis调整映射范围：

Data=rand(12,12)-.5;
Data([4,5,13])=nan;SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw();clim([-.8,.8])
SHM.setText();

调整前：

调整后：

5 colormap

matlab自带的colormap都能用：

Data=rand(14,14);
SHM=SHeatmap(Data,'Format','sq');
SHM.draw();colormap(bone)

可以联合我写的slanCM工具函数：
https://slandarer.blog.csdn.net/article/details/127719784

举点例子：

colormap(flipud(slanCM(20)))

colormap(flipud(slanCM(21)))

colormap(slanCM(61))

colormap(slanCM(177))

再比如：

Data=rand(12,12)-.5;
Data([4,5,13])=nan;SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw();clim([-.7,.7])
colormap(slanCM(141))
SHM.setText();

clim([-.7,.7])
colormap(slanCM(136))

clim([-.7,.7])
colormap(slanCM(134))

clim([-.8,.8])
colormap(slanCM(110))

clim([-1,1])
colormap(slanCM(97))

6 调整colormap位置

假设编写如下代码：

Data=rand(3,12);
SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw();

改成这样：

Data=rand(3,12);
SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw();CB=colorbar;
CB.Location='southoutside';

7 修改标签

改编x轴y轴标签就还是设置XTickLabel
和YTickLabel:

Data=rand(10,10);
SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw(); ax=gca;
ax.XTickLabel={'X-1','X-2','X-3','X-4','X-5','X-6','X-7','X-8','X-9','X-10'};
ax.YTickLabel={'Y-1','Y-2','Y-3','Y-4','Y-5','Y-6','Y-7','Y-8','Y-9','Y-10'};
ax.FontSize=14;

8 整体修饰

使用：

• setBox ：修饰边框
• setPatch ：修饰图形
• setText ：修饰文本

可对各个部分进行整体修改。

修改图形边缘及框颜色：

Data=rand(10,10);
Data([4,5,13])=nan;SHM=SHeatmap(Data,'Format','pie');
SHM=SHM.draw(); SHM.setBox('Color',[0,0,.8])
SHM.setPatch('EdgeColor',[.8,0,0])

修改全部文本颜色：

Data=rand(10,10);
Data([4,5,13])=nan;SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw(); SHM.setText('Color',[0,0,.8],'FontSize',14)

9 局部修改

使用：

• setTextMN
• setPatchMN

设置第m行n列对象的属性：

举个例子，把数值大于0.9部分文字变为星号，并用红色框框起来：

Data=rand(9,9);
Data([4,5,13])=nan;SHM=SHeatmap(Data,'Format','sq');
SHM=SHM.draw();SHM.setText(); for i=1:size(Data,1)for j=1:size(Data,2)if Data(i,j)>.9SHM.setTextMN(i,j,'String','**','FontSize',20)SHM.setPatchMN(i,j,'EdgeColor',[1,0,0],'LineWidth',2)endend
end

局部设置可设置nan部分颜色：

SHM.setPatchMN(4,1,'FaceColor',[.8,.6,.6])

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工具函数完整代码

classdef SHeatmap
% =========================================================================
% Format
% -------------------------------------------------------------------------
% sq    : 方形(默认)
% pie   : 饼图
% circ  : 圆形
% oval  : 椭圆形
% hex   : 六边形
% asq   : 自带调整大小的方形
% acirc : 自带调整大小的圆形
% =========================================================================
% @author : slandarer
% gzh  : slandarer随笔 
% -------------------------------------------------------------------------
% Zhaoxu Liu / slandarer (2023). special heatmap 
% (https://www.mathworks.com/matlabcentral/fileexchange/125520-special-heatmap), 
% MATLAB Central File Exchange. 检索来源 2023/3/1.
% -------------------------------------------------------------------------propertiesax,arginList={'Format'}Format='sq'  % sq    : 方形(默认)% pie   : 饼图% circ  : 圆形% oval  : 椭圆形% hex   : 六边形% asq   : 自带调整大小的方形% acirc : 自带调整大小的圆形DatadfColor1=[0.9686    0.9882    0.9412;    0.9454    0.9791    0.9199;    0.9221    0.9700    0.8987;    0.8988    0.9609    0.8774;0.8759    0.9519    0.8560;    0.8557    0.9438    0.8338;    0.8354    0.9357    0.8115;    0.8152    0.9276    0.7892;0.7909    0.9180    0.7685;    0.7545    0.9039    0.7523;    0.7180    0.8897    0.7361;    0.6816    0.8755    0.7199;0.6417    0.8602    0.7155;    0.5962    0.8430    0.7307;    0.5507    0.8258    0.7459;    0.5051    0.8086    0.7610;0.4596    0.7873    0.7762;    0.4140    0.7620    0.7914;    0.3685    0.7367    0.8066;    0.3230    0.7114    0.8218;0.2837    0.6773    0.8142;    0.2483    0.6378    0.7929;    0.2129    0.5984    0.7717;    0.1775    0.5589    0.7504;0.1421    0.5217    0.7314;    0.1066    0.4853    0.7132;    0.0712    0.4488    0.6950;    0.0358    0.4124    0.6768;0.0314    0.3724    0.6364;    0.0314    0.3319    0.5929;    0.0314    0.2915    0.5494;    0.0314    0.2510    0.5059]dfColor2=[0.6196    0.0039    0.2588;    0.6892    0.0811    0.2753;    0.7588    0.1583    0.2917;    0.8283    0.2354    0.3082;0.8706    0.2966    0.2961;    0.9098    0.3561    0.2810;    0.9490    0.4156    0.2658;    0.9660    0.4932    0.2931;0.9774    0.5755    0.3311;    0.9887    0.6577    0.3690;    0.9930    0.7266    0.4176;    0.9943    0.7899    0.4707;0.9956    0.8531    0.5238;    0.9968    0.9020    0.5846;    0.9981    0.9412    0.6503;    0.9994    0.9804    0.7161;0.9842    0.9937    0.7244;    0.9526    0.9810    0.6750;    0.9209    0.9684    0.6257;    0.8721    0.9486    0.6022;0.7975    0.9183    0.6173;    0.7228    0.8879    0.6325;    0.6444    0.8564    0.6435;    0.5571    0.8223    0.6448;0.4698    0.7881    0.6460;    0.3868    0.7461    0.6531;    0.3211    0.6727    0.6835;    0.2553    0.5994    0.7139;0.2016    0.5261    0.7378;    0.2573    0.4540    0.7036;    0.3130    0.3819    0.6694;    0.3686    0.3098    0.6353]Colormap;maxVpatchHdl;boxHdl;pieHdl;textHdlendmethodsfunction obj=SHeatmap(Data,varargin)obj.Data=Data;obj.maxV=max(max(abs(obj.Data)));% 获取其他数据disp(char([64 97 117 116 104 111 114 32 58 32,...115 108 97 110 100 97 114 101 114]))for i=1:2:(length(varargin)-1)tid=ismember(obj.arginList,varargin{i});if any(tid)obj.(obj.arginList{tid})=varargin{i+1};endend% 设置配色if any(any(obj.Data<0))obj.Colormap=obj.dfColor2;% tX=linspace(0,1,size(obj.Colormap,1));% tXi=linspace(0,1,256);% tR=interp1(tX,obj.Colormap(:,1),tXi);% tG=interp1(tX,obj.Colormap(:,2),tXi);% tB=interp1(tX,obj.Colormap(:,3),tXi);% obj.Colormap=[tR(:),tG(:),tB(:)];elseobj.Colormap=obj.dfColor1(end:-1:1,:);endendfunction obj=draw(obj)obj.ax=gca;hold on;box onobj.ax.FontName='Times New Roman';obj.ax.FontSize=12;obj.ax.LineWidth=.8;obj.ax.XLim=[.5,size(obj.Data,2)+.5];obj.ax.YLim=[.5,size(obj.Data,1)+.5];obj.ax.YDir='reverse';obj.ax.TickDir='out';obj.ax.TickLength=[0.002,0.002];obj.ax.DataAspectRatio=[1,1,1];obj.ax.YTick=1:size(obj.Data,1);obj.ax.XTick=1:size(obj.Data,2);colormap(obj.Colormap)colorbarif any(any(obj.Data<0))try caxis(obj.maxV.*[-1,1]),catch,endtry clim(obj.maxV.*[-1,1]),catch,endelsetry caxis(obj.maxV.*[0,1]),catch,endtry clim(obj.maxV.*[0,1]),catch,endend% 调整初始界面大小fig=obj.ax.Parent;fig.Color=[1,1,1];if max(fig.Position(3:4))<600fig.Position(3:4)=[1.6,1.8].*fig.Position(3:4);fig.Position(1:2)=fig.Position(1:2)./4;endbX1=repmat([.5,size(obj.Data,2)+.5,nan],[size(obj.Data,1)+1,1])';bY1=repmat((.5:1:(size(obj.Data,1)+.5))',[1,3])';bX2=repmat((.5:1:(size(obj.Data,2)+.5))',[1,3])';bY2=repmat([.5,size(obj.Data,1)+.5,nan],[size(obj.Data,2)+1,1])';obj.boxHdl=plot([bX1(:);bX2(:)],[bY1(:);bY2(:)],'LineWidth',.8,'Color',[1,1,1].*.85);if isequal(obj.Format,'sq')set(obj.boxHdl,'Color',[1,1,1,0])endbaseT=linspace(0,2*pi,200);hexT=linspace(0,2*pi,7);thetaMat=[1,-1;1,1].*sqrt(2)./2;for row=1:size(obj.Data,1)for col=1:size(obj.Data,2)    if isnan(obj.Data(row,col))obj.patchHdl(row,col)=fill([-.5,.5,.5,-.5].*.98+col,[-.5,-.5,.5,.5].*.98+row,[.8,.8,.8],'EdgeColor','none');obj.pieHdl(row,col)=fill([0,0,0,0],[0,0,0,0],[0,0,0]);obj.textHdl(row,col)=text(col,row,'×','FontName','Times New Roman','HorizontalAlignment','center','FontSize',20);elsetRatio=abs(obj.Data(row,col))./obj.maxV;switch obj.Formatcase 'sq'obj.patchHdl(row,col)=fill([-.5,.5,.5,-.5].*.98+col,[-.5,-.5,.5,.5].*.98+row,...obj.Data(row,col),'EdgeColor','none');case 'asq'obj.patchHdl(row,col)=fill([-.5,.5,.5,-.5].*.98.*tRatio+col,[-.5,-.5,.5,.5].*.98.*tRatio+row,...obj.Data(row,col),'EdgeColor','none');case 'pie'baseCircX=cos(baseT).*.92.*.5;baseCircY=sin(baseT).*.92.*.5;obj.pieHdl(row,col)=fill(baseCircX+col,baseCircY+row,...[1,1,1],'EdgeColor',[1,1,1].*.3,'LineWidth',.8);baseTheta=linspace(pi/2,pi/2+obj.Data(row,col)./obj.maxV.*2.*pi,200);basePieX=[0,cos(baseTheta).*.92.*.5];basePieY=[0,sin(baseTheta).*.92.*.5];obj.patchHdl(row,col)=fill(basePieX+col,-basePieY+row,...obj.Data(row,col),'EdgeColor',[1,1,1].*.3,'lineWidth',.8);case 'circ'baseCircX=cos(baseT).*.92.*.5;baseCircY=sin(baseT).*.92.*.5;obj.patchHdl(row,col)=fill(baseCircX+col,baseCircY+row,...obj.Data(row,col),'EdgeColor','none','lineWidth',.8);case 'acirc'baseCircX=cos(baseT).*.92.*.5;baseCircY=sin(baseT).*.92.*.5;obj.patchHdl(row,col)=fill(baseCircX.*tRatio+col,baseCircY.*tRatio+row,...obj.Data(row,col),'EdgeColor','none','lineWidth',.8);case 'oval'tValue=obj.Data(row,col)./obj.maxV;baseA=1+(tValue<=0).*tValue;baseB=1-(tValue>=0).*tValue;baseOvalX=cos(baseT).*.98.*.5.*baseA;baseOvalY=sin(baseT).*.98.*.5.*baseB;baseOvalXY=thetaMat*[baseOvalX;baseOvalY];obj.patchHdl(row,col)=fill(baseOvalXY(1,:)+col,-baseOvalXY(2,:)+row,...obj.Data(row,col),'EdgeColor',[1,1,1].*.3,'lineWidth',.8);case 'hex'obj.patchHdl(row,col)=fill(cos(hexT).*.5.*.98.*tRatio+col,sin(hexT).*.5.*.98.*tRatio+row,...obj.Data(row,col),'EdgeColor',[1,1,1].*.3,'lineWidth',.8);endobj.textHdl(row,col)=text(col,row,sprintf('%.2f',obj.Data(row,col)),'FontName','Times New Roman','HorizontalAlignment','center','Visible','off');endendendend% 修饰文本function setText(obj,varargin)graymap=mean(get(obj.ax,'Colormap'),2);climit=get(obj.ax,'CLim');for row=1:size(obj.Data,1)for col=1:size(obj.Data,2)     set(obj.textHdl(row,col),'Visible','on','Color',...[1,1,1].*(interp1(linspace(climit(1),climit(2),size(graymap,1)),graymap,obj.Data(row,col))<.5),varargin{:})endendendfunction setTextMN(obj,m,n,varargin)set(obj.textHdl(m,n),varargin{:})end% 设置图形样式function setPatch(obj,varargin)for row=1:size(obj.Data,1)for col=1:size(obj.Data,2)   if ~isnan(obj.Data(row,col))set(obj.patchHdl(row,col),varargin{:})if isequal(obj.Format,'pie')set(obj.pieHdl(row,col),varargin{:})  endendendendendfunction setPatchMN(obj,m,n,varargin)set(obj.patchHdl(m,n),varargin{:})if isequal(obj.Format,'pie')set(obj.pieHdl(m,n),varargin{:})endend% 设置框样式function setBox(obj,varargin)set(obj.boxHdl,varargin{:})endend
% =========================================================================
% @author : slandarer
% gzh  : slandarer随笔 
% -------------------------------------------------------------------------
% Zhaoxu Liu / slandarer (2023). special heatmap 
% (https://www.mathworks.com/matlabcentral/fileexchange/125520-special-heatmap), 
% MATLAB Central File Exchange. 检索来源 2023/3/1.
% -------------------------------------------------------------------------
end

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完

编程不易，希望大家该点赞的点赞，该在看的在看！！

未经允许本代码请勿作商业用途，引用的话可以引用我file exchange上的链接，可使用如下格式：

Zhaoxu Liu / slandarer (2023). special heatmap (https://www.mathworks.com/matlabcentral/fileexchange/125520-special-heatmap), MATLAB Central File Exchange. 检索来源 2023/3/1.

若转载请保留以上file exchange链接及本文链接！！！！!