Thread Subject: plotting a 2D graph

Hi

  I'm trying to find a way to plot a 2D graph. The problem
is that for y I wanted T = T * t.
  I don't know if I explained myself right. The idea is to
have 0:0.001:0.5 for x and for each number to have the
result of T = T * t.
  For example for a starting T and t of 0.5 we would have
    x = 0 , y = 0.25
    x = 0.001 , y = 0.125
    x = 0.002 , y = 0.0625
  and so on . . .

 I've done the following m file:

T = 0.5
t = 0.999
T = T * t;
x = 0:0.001:0.5;
plot ( x , T );

  but all I get in the graph is a series of dots ( I assum
to be x )

   What am I missing?
   Thanks in advance.
 

"kotoko san" <kotoko.san@gmail.com> wrote in message
<g0vffn$6ol$1@fred.mathworks.com>...
> Hi
>
> I'm trying to find a way to plot a 2D graph. The
problem
> is that for y I wanted T = T * t.
> I don't know if I explained myself right. The idea is
to
> have 0:0.001:0.5 for x and for each number to have the
> result of T = T * t.
> For example for a starting T and t of 0.5 we would have
> x = 0 , y = 0.25
> x = 0.001 , y = 0.125
> x = 0.002 , y = 0.0625
> and so on . . .
>
> I've done the following m file:
>
> T = 0.5
> t = 0.999
> T = T * t;
> x = 0:0.001:0.5;
> plot ( x , T );
>
> but all I get in the graph is a series of dots ( I
assum
> to be x )
>
> What am I missing?
> Thanks in advance.
>


Based on what I see here, you're plotting a vector, x, with
a scalar, T*t. You need to vary T with x.

How about this?

x = 0:.001:.5;
T = .5;
t = .999;
y = T * t.^(1:length(x));
plot(x,y)

Is that what you wanted?