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Last seen: 15 Tage vor Aktiv seit 2020

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vectorization examples for efficiency
I wonder if the following expressions are already optimized forms for computational efficiency and if not how to rewrite them? ...

18 Tage vor | 1 Antwort | 0

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multiple actions following @(src,event) in uicontrol
How to add another action or function to the following Button=uicontrol('Style','pushbutton', 'String','pause','Position',[1800...

18 Tage vor | 1 Antwort | 0

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Smart way of adding paths
For those using multiple PCs, it is necessary to use a smart way of adding paths. How is it possible to add paths like: a='c:\...

23 Tage vor | 1 Antwort | 0

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role of flux f in bcfun of pdepe for systems of PDEs
To solve utt=uxx, as the flux term f has a 0 entry in pdefun, the same f is in bcfun. In bcfun, there's q(x,t)f(x,t,u,ux), which...

25 Tage vor | 1 Antwort | 0

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functions don't take effect
When calling a function involving multiple other functions where some changes are made, new changes don't take effect even when ...

25 Tage vor | 0 Antworten | 0

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uicontrol to start over a loop
uiwait/uiresume through uicontrol can be used to pause/continue a loop. Is there a corresponding ui+... to start over a loop fro...

27 Tage vor | 1 Antwort | 0

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concatenate multiple 'OutputFcn' options in odeset?
Is there a way to output both odeplot+odephas2 after modifying the following? options=odeset('OutputFcn',@odeplot,'OutputFcn',@...

28 Tage vor | 1 Antwort | 0

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3D plots rotated in live scripts
It seems that once 3d plots in animations are rotated, the animation can't be replayed again, for the control slider automatical...

29 Tage vor | 1 Antwort | 0

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animation turns static in live scripts
I have the following code that works well in m files but not in live scripts because a figure pops up in a separate window and t...

29 Tage vor | 0 Antworten | 0

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if nested functions supported in live scripts
Are nested functions supported in live scripts? Otherwise, global variables have to be declared as global?

30 Tage vor | 1 Antwort | 0

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how to output quantities involving time derivatives in pdepe
pdeval only seems to output the solution and the spatial derivative of the solution via [~,dudx]=pdeval(m,x,sol(i,:,1),x). It se...

etwa ein Monat vor | 1 Antwort | 0

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why does pdepe adopt Petrov-Galerkin?
pdepe is meant to solve parabolic and elliptic PDEs. Petrov-Galerkin seems to be designed to solve convection dominated ones, wh...

etwa ein Monat vor | 0 Antworten | 0

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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; ...

etwa 2 Monate vor | 2 Antworten | 0

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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...

etwa 2 Monate vor | 1 Antwort | 0

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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?

etwa 2 Monate vor | 1 Antwort | 0

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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...

etwa 2 Monate vor | 0 Antworten | 0

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

etwa 2 Monate vor | 1 Antwort | 0

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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...

etwa 2 Monate vor | 1 Antwort | 0

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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)...

etwa 2 Monate vor | 2 Antworten | 0

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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...

etwa 2 Monate vor | 1 Antwort | 0

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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 ...

etwa 2 Monate vor | 0 Antworten | 0

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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...

etwa 2 Monate vor | 1 Antwort | 0

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

etwa 2 Monate vor | 1 Antwort | 0

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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...

etwa 2 Monate vor | 2 Antworten | 0

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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...

etwa 2 Monate vor | 0 Antworten | 0

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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...

2 Monate vor | 1 Antwort | 0

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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...

2 Monate vor | 1 Antwort | 0

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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...

mehr als ein Jahr vor | 1 Antwort | 0

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'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...

mehr als ein Jahr vor | 1 Antwort | 0

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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, ...

mehr als ein Jahr vor | 1 Antwort | 0

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