MATLAB: How to make a Heatmap Calendar plot

calendarcolorbarheatmapMATLABplot

I'm trying to make a Heatmap Calendar for MP2.5 like the one made for R's "Open Air Project", using date and concentration (data attached)
http://www.openair-project.org/PDF/OpenAir_Manual.pdf
It should look like this:
I know there's a calendar function, but I have no idea of how to plot it. I would really appreciate any help you could give me. Thanks a lot!

Best Answer

I made something similar to what you were asking for. It's just something I put together for fun, so there are definitely some shortcomings and lots of shortcuts. However, if you don't find anything better on FEX, then you can develop this further. You have to play around with the figure size, markersize and fontsize to make it look good. If you change one you have to adjust the others.
% Load data
data=load('cal.mat')
Date=data.Date;
MP25=data.MP25;
MP25(isnan(MP25))=-100;
% Group data
x=weekday(Date);
y=week(Date);
[G,m]=findgroups(month(Date));
% Figure starts here!
figure;hold on
for ii=1:12
% Extract subgroup of monthly data and name of month
xm=x(G==ii);
ym=y(G==ii);
zm=MP25(G==ii);
Mname = unique(month(Date(G==ii),'name'));
% Initiate subplot ii
ax(ii) = subplot(3,4,ii);hold on
% Write out day of month on grid
str=cellstr(num2str(day(Date(G==ii),'dayofmonth')));
text(xm,ym,ones(size(xm)).*100,str,'fontsize',6,...
    'fontweight','bold',...
    'verticalalignment','middle',...
    'horizontalalignment','center')
zm(zm<0)=NaN;
% Plot color scale
H(ii) = scatter3(xm,ym,zm,150,zm,...
    's','filled','markeredgecolor','none');
% Fix some properties that are annoying to change after plotting
title(Mname)
set(gca,'ylim',[min(ym)-.5 min(ym)+5.5],...
    'ytick',[min(ym)-.5:max(ym)+.5])
grid on
end
% Add colorbar
colorbar('west','position',[0.93 0.30 0.03 0.4])
% Set up properties for all axes
set(ax,'clim',[0 90],...
    'xcolor','k',...
    'ycolor','k',...
    'xtick',1.5:8,...
    'box','on',...
    'xticklabels',{'S     ','M     ','T     ','W     ','T     ','F     ','S     '},...
    'yticklabels',{},...
    'ticklength',[0 0],...
    'ydir','reverse',...
    'xlim',[0.5 7.5],...
    'view',[0 90],...
    'layer','top');
% Adjust figure size to fit with the font/markersize
set(gcf,'color',[1 1 1],...
    'position',[955   140   640   428])
colormap(flipud(autumn))
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