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From: Vladimir on 5 Jul 2010 05:59
Hello,

first of all this is my first post in this Newsgroup but I found lots of solutions to problems I run up since I started using MATLAB. What I'm about to ask might be too easy but anyway here is my question: I wrote function for solving Laplace diff equation and it works like a charm, but is there a way to have values already calculated/input shown in dialogue text when using INPUT command??

f.e.
I'm calling function like

[x,y,U]= Laplace(xvalue,yvalue,Dx,Dy)

where xvalue and yvalues are upper boundaries of space where I'm looking for solution (0<x<xvalue, 0<y<yvalue)

Now, I'm using input command to have dialogue text popped out for user to input boundary values for u(x,0), u(x,yvalue), u(0,y) and u(xvalue,y) like

cond2=input ('Input 2nd boundary condition for u(x,A)= ','s');
and so on

where A should be yvalue. Is there anyway to change A with numerical value of yvalue I used to call the function in first place??
(f.e. [x,y,U]= Laplace(1,2,0.1,0.05)
....
so I could get
Input 2nd boundary condition for u(x,2)= )

thanks in advance
From: Walter Roberson on 5 Jul 2010 09:25
Vladimir wrote:
> but is there a way to have values already calculated/input shown in
> dialogue text when using INPUT command??

I am not confident I know what you are asking, but instead of

cond2=input ('Input 2nd boundary condition for u(x,A)= ','s');

you could have

cond2=input (sprintf('Input 2nd boundary condition for u(x,%g)= ',A),'s');
From: Vladimir on 6 Jul 2010 04:27
Walter Roberson <roberson(a)hushmail.com> wrote in message <O2lYn.6772$Hw.6491(a)newsfe10.iad>...
> Vladimir wrote:
> > but is there a way to have values already calculated/input shown in
> > dialogue text when using INPUT command??
>
> I am not confident I know what you are asking, but instead of
>
> cond2=input ('Input 2nd boundary condition for u(x,A)= ','s');
>
> you could have
>
> cond2=input (sprintf('Input 2nd boundary condition for u(x,%g)= ',A),'s');

Thank You very much, that worked perfectly and that is exactly what I need!!!
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