Change data tip so it shows temperature

Question

Alun Owen 2020-8-5

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/575470-change-data-tip-so-it-shows-temperature

评论： Alan Moses 2020-8-13

I have created a thermal model using matlab pde, and it works well. However, when opening the model in a figure window, the data tip function only shows X, Y, and Z data. I've tried looking for a way to change this so it shows the temperature at certain points (e.g when clicking anywhere on the model, it will show the temperature). Is there anyway I can do this? I feel like this should be intergrated somewhere in the window. Below is my code if needed.

u = symunit;
SIUnits = baseUnits('SI');
gm = multicuboid([2 2.1 2.7 3.2 20],[2.1 2.2 2.7 3.2 20],1.55);
thermalmodel = createpde('thermal','transient');
thermalmodel.Geometry = gm
pdegplot(thermalmodel,'CellLabels','on','FaceAlpha',0.5);
figure('Position',[10,10,800,400]);
subplot(1,2,1)
pdegplot(thermalmodel,'FaceAlpha',0.25,'CellLabel','on')
title('Geometry with Cell Labels')
subplot(1,2,2)
pdegplot(thermalmodel,'FaceAlpha',0.25,'FaceLabel','on')
title('Geometry with Face Labels')
generateMesh(thermalmodel,'Hmax',1);

Water at 30 degrees C

thermalProperties(thermalmodel,'ThermalConductivity',0.616,'SpecificHeat',4184,'MassDensity',997,'Cell',1);

304 stainless steel

thermalProperties(thermalmodel,'ThermalConductivity',16.2,'SpecificHeat',500,'MassDensity',8000,'Cell',2);

Soapstone

thermalProperties(thermalmodel,'ThermalConductivity',6.4,'SpecificHeat',980,'MassDensity',2980,'Cell',3);

Concrete

thermalProperties(thermalmodel,'ThermalConductivity',1.2,'SpecificHeat',880,'MassDensity',2400,'Cell',4);

Soil

thermalProperties(thermalmodel,'ThermalConductivity',6.4,'SpecificHeat',750,'MassDensity',2434,"Cell",5);

thermalmodel.StefanBoltzmannConstant = 5.670373E-8;
thermalBC(thermalmodel,'Temperature',353.15,'Face',[1 2 3 4 5 6]);
thermalIC(thermalmodel,277.65,'Cell',5);
thermalIC(thermalmodel,295.15,'Cell',1);
thermalIC(thermalmodel,293.15,'Cell',[2 3 4]);
thermalBC(thermalmodel,'AmbientTemperature',350.15,"Emissivity",0.38,"Face",[7 8 9 10 11 12]);
thermalBC(thermalmodel,'AmbientTemperature',313.15,'Emissivity',0.94,'Face',[19 20 21 22 23 24]);
thermalBC(thermalmodel,'HeatFlux',-4019.4,'Face',[7 8 9 10 11 12]);
thermalBC(thermalmodel,'HeatFlux',-240.67,'Face',[13 14 15 16 17 18]);
generateMesh(thermalmodel);
tlist = 10:100:86400;

Model after 24 hours (86400 seconds)

thermalresults = solve(thermalmodel,tlist);
T = thermalresults.Temperature;
pdeplot3D(thermalmodel,'ColorMapData',thermalresults.Temperature(:,end));

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Answer 1

Alan Moses 2020-8-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/575470-change-data-tip-so-it-shows-temperature#answer_479214

在 MATLAB Online 中打开

You can refer to datacursormode documentation which has an example of customizing data tips via a callback function. From my understanding the temperature data is present in the ‘T’ variable. To add customized data tips in the final 3D plot of your script, you can modify the following lines of code by appending this at the end of your script:

dcm = datacursormode;
dcm.UpdateFcn = {@displayCoordinates,T};
function txt = displayCoordinates(~,info,T)
    x = info.Position(1);
    y = info.Position(2);
    z = info.Position(3);
    %temp = T(appropriate indexing);
    txt = ['(' num2str(x) ', ' num2str(y) ', ' num2str(z) ', ' num2str(temp) ')'];
end