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Question
blank matlab icon on taskbar after a change in matlab directory.
The original matlab directory is c:\matlab\r2023 and r2023 was moved to c:\ to replace c:\matlab and renamed as matlab r2023. M...
environ 2 mois il y a | 1 réponse | 0
1
réponseQuestion
plot in designated subfigures in loops
I have the following code. I want to plotsubfigures as required in the comments in main.m. How to plot in designated subfigures ...
2 mois il y a | 1 réponse | 0
1
réponseQuestion
remove inf in quiver
I want quiver(X,Y,u,v), but there's inf entries in u and v at positions x=y. I'm looking for the smartest way to skip these posi...
3 mois il y a | 1 réponse | 0
1
réponseQuestion
smart function to switch functions
Suppose I want to tune different ode solvers to run: ode23(@fun,...) I want to use 'odesolver' so that odesolver(@fun,...) ac...
3 mois il y a | 3 réponses | 0
3
réponsesQuestion
call function name in the same function
In a function, I need to run this function somewhere within the function like function fun i=1 if i>1 function name ...
3 mois il y a | 1 réponse | 0
1
réponseQuestion
Save and load models in phase plane app
Though there are Save and load buttons in phase plane app, I don't think they work. I never find any models saved.
3 mois il y a | 1 réponse | 0
1
réponseQuestion
uicontrol doesn't work in Matlab 2023a
figure;pauseButton=uicontrol('Style','pushbutton',... 'String','pause','Position',[2000 60 100 100],... 'Callback',@(s...
3 mois il y a | 1 réponse | 0
1
réponseQuestion
vectorization examples for efficiency
I wonder if the following expressions are already optimized forms for computational efficiency and if not how to rewrite them? ...
4 mois il y a | 1 réponse | 0
1
réponseQuestion
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...
4 mois il y a | 1 réponse | 0
1
réponseQuestion
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:\...
5 mois il y a | 1 réponse | 0
1
réponseQuestion
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...
5 mois il y a | 1 réponse | 0
1
réponseQuestion
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 ...
5 mois il y a | 1 réponse | 0
0
réponseQuestion
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...
5 mois il y a | 1 réponse | 0
1
réponseQuestion
concatenate multiple 'OutputFcn' options in odeset?
Is there a way to output both odeplot+odephas2 after modifying the following? options=odeset('OutputFcn',@odeplot,'OutputFcn',@...
5 mois il y a | 1 réponse | 0
1
réponseQuestion
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...
5 mois il y a | 1 réponse | 0
1
réponseQuestion
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...
5 mois il y a | 1 réponse | 0
0
réponseQuestion
if nested functions supported in live scripts
Are nested functions supported in live scripts? Otherwise, global variables have to be declared as global?
5 mois il y a | 1 réponse | 0
1
réponseQuestion
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...
5 mois il y a | 1 réponse | 0
1
réponseQuestion
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...
5 mois il y a | 1 réponse | 0
0
réponseQuestion
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; ...
5 mois il y a | 2 réponses | 1
2
réponsesQuestion
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...
5 mois il y a | 1 réponse | 0
1
réponseQuestion
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?
5 mois il y a | 1 réponse | 0
1
réponseQuestion
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...
6 mois il y a | 1 réponse | 0
0
réponseQuestion
how to change time integration in pdepe
ode15s is used in pdepe. How to change it to say ode23 etc when in need?
6 mois il y a | 1 réponse | 0
1
réponseQuestion
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...
6 mois il y a | 1 réponse | 0
1
réponseQuestion
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)...
6 mois il y a | 2 réponses | 0
2
réponsesQuestion
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...
6 mois il y a | 1 réponse | 0
1
réponseQuestion
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 ...
6 mois il y a | 1 réponse | 0
0
réponseQuestion
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...
6 mois il y a | 1 réponse | 0
1
réponseQuestion
ode23, 45, 15s, 15i for conservative ODEs
Which of ode23, 45, 15s, 15i are dissipative or anti-dissipative for conservative ODEs?
6 mois il y a | 1 réponse | 0
1
réponse
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