Domanda


how to output quantities within pdefun, bcfun, icfun in pdepe
How to output quantities within pdefun, bcfun, icfun in pdepe? e.g. in pdefun: function [c,f,s] = heatcyl(x,t,u,dudx) c = 1; ...

circa un anno fa | 2 risposte | 1

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Domanda


unable to adjust real time views of surf plots in plot-drawnow animations
In plot-drawnow animations, how to use the mouse to adjust the view of a 3d surf plot? I've found that there's no response to an...

circa un anno fa | 1 risposta | 0

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Domanda


time integration in solvepde (=pde toolbox?)
solvepde (=pde toolbox?) seem to be based on finite elements. If so what time integration (ode23 etc) is adopted?

circa un anno fa | 1 risposta | 0

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Domanda


different PDEs to solve through events in pdepe
There is a model defined by a pointwise PDE solving for u(x,t), i.e. it is PDE1 when u(x,t)>0 and PDE2 when u(x,t)<=0. Can one u...

circa un anno fa | 0 risposte | 0

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Domanda


how to change time integration in pdepe
ode15s is used in pdepe. How to change it to say ode23 etc when in need?

circa un anno fa | 1 risposta | 0

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Domanda


How to stop loops or close figures in live scripts
I wanna use live scripts to run a loop updating an animation because this will allow to playback the animation. In the normal co...

circa un anno fa | 1 risposta | 0

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Domanda


stop animations with pause()
I wanna stop/break/suspend the following animation without using ctrl+c, how? for i=1:10 plot(linspace(0,1),linspace(0,1)...

circa un anno fa | 2 risposte | 0

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Domanda


plot style of 'OutputFcn'=odeplot in odeset
The following code can plot the solution of the ode with 'odeplot' rather than using 'plot'. options = odeset('OutputFcn',@odep...

circa un anno fa | 1 risposta | 0

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Domanda


pdepe/pde1dm's vectorized option
In pdepe, when vectorized is turned on, the elapsed time is the same as that when vectorized is off. Why no improvement? The ...

circa un anno fa | 0 risposte | 0

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Domanda


pde1dm with coupled ODEs
According to the pde1dm manual, pde1dm with coupled ODEs has to do with three additional arguments to the pde1dm function: [sol...

circa un anno fa | 1 risposta | 0

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Domanda


ode23, 45, 15s, 15i for conservative ODEs
Which of ode23, 45, 15s, 15i are dissipative or anti-dissipative for conservative ODEs?

circa un anno fa | 1 risposta | 0

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Domanda


pde1dm compared to pdepe
pde1dm is an extended version of pdepe and it can solve equations pdepe can't solve. I wonder about the differences between thes...

circa un anno fa | 2 risposte | 0

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Domanda


Spatial discretization in pdepe compared to others
The spatial discretization in pdepe seems to be a unique one. Could someone please explain it briefly so that it is understandab...

circa un anno fa | 0 risposte | 0

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Domanda


whether meshes affect computational step lengths in pdepe
In pdepe the user specifies an xmesh and tmesh. Do these meshes affect what meshes and computational step lengths adopted by the...

circa un anno fa | 1 risposta | 0

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Domanda


why 'parabolic' and 'hyperbolic' not recommended for solving PDEs
why are 'parabolic' and 'hyperbolic' not recommended for solving PDEs and instead 'solvepde' is recommended? Aren't they all bas...

circa un anno fa | 1 risposta | 0

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Domanda


how to sort dlarrays
How to sort dlarrays like in sort(a) , where a is a numeric array? Is there a way of sorting next(mbq) by specifying some opt...

circa 2 anni fa | 1 risposta | 0

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Domanda


'addpoints' animation with a control slider
Somehow making an animation with 'addpoints' enables a control slider for the user to slide back and forth to view the animation...

circa 2 anni fa | 1 risposta | 0

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Domanda


input argument order in deep learning functions
For those that have many input arguments, does the order of the input arguments affect the result of the function. For example, ...

circa 2 anni fa | 1 risposta | 0

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Domanda


'trainingOptions' without 'trainNetwork' in deep learning
options = trainingOptions("sgdm", Plots="training-progress") sets training options. This setting works when training is implem...

circa 2 anni fa | 1 risposta | 0

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Domanda


output extra variables through ode23 when there are multiple unknowns
By writing a function below, one can output extra variable v (other than unknown u): function [ut,v]=myode(t,u) ut=u;v=u+1; ...

quasi 5 anni fa | 2 risposte | 0

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Domanda


shortest path algorithm based on a recursive function
The following code is correct 90% of the time. Anybody can find the bug? function dis=wrong(node1,nodes,node2) % distance node...

circa 5 anni fa | 1 risposta | 0

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Domanda


matlab gets different answers for the same code
for loop=1:10 i12=randperm(n,2); i1=i12(1); i2=i12(2); % i1=2;i2=6; Floyd(i1,i2) Dijkstra(i1,i2) ...

circa 5 anni fa | 1 risposta | 0

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