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while t<=tf

for i=2:Nx

for j=2:Ny

T(i,j) =T(i,j)+dt*alpha*(((T(i-1,j)-2*T(i,j)+T(i+1,j))/dx^2)+((T(i,j-1)-2*T(i,j)+T(i,j+1))/dy^2));

history_T=cat(3,history_T,T);

end

end

t=t+dt;

X=[0:0.05:1];

Y=[0:0.05:1];

%% PLOT

surf(X,Y,T)

pause(0.01)

%% FORMATING ELEMENTS

xlabel('Width, $m$','Interpreter','Latex')

ylabel('Depth, $m$','Interpreter','Latex')

zlabel('Temperature, $T$','Interpreter','Latex')

xlim([0 Lx])

ylim([0 Ly])

zlim([0 100])

set (gca,'FontSize',10,'FontName','Times')

set(gcf,'color','w');

end

Where X and Y are row vectors and T is a matrix with dimensions (length(X),length(Y). T updated with every repitition of the while loop, producing a surf plot that changes accordingly.

The plot appears with default formatting until the final iteration where it formats it as I intend.

How can I instruct MATLAB to keep the formatting elements constant throught the iteration?

Many thanks.

Divya Yerraguntla
on 16 Oct 2019

Hi Josh,

Try placing the pause(0.01) line of code after %% Formating elements section i.e. after the set(gcf,'color,'w') and not after the surf(X,Y,T). This actually helps in pausing and viewing the surf plot after all the required formatting is done.

Hope it works!

darova
on 16 Oct 2019

Use hold on command

%% FORMATING ELEMENTS

figure(1)

xlabel('Width, $m$','Interpreter','Latex')

ylabel('Depth, $m$','Interpreter','Latex')

zlabel('Temperature, $T$','Interpreter','Latex')

xlim([0 Lx])

ylim([0 Ly])

zlim([0 100])

set (gca,'FontSize',10,'FontName','Times')

set(gcf,'color','w');

hold on

while

h = surf(X,Y,T);

pause(0.01)

delete(h);

end

hold off

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