On Oct 5, 2012, at 2:14 PM, drugistudent wrote:

> Hi! I'm from Poland and I study at Gdansk University of Technologi - Civil

> Enginerring.

> I've a problem with this task

http://i49.tinypic.com/1z6d2xf.jpg - plot in

> MATLAB all lines which are in the picture but I'm using an octave ;)

> I've succesfully plotted straight lines but i've major problem with sinus

> (or tanges,cosinus other function that must be from 0.2 to 0.3,0.01 to 0.06

> etc)

> I'm typing (in blank m-file) :

>

> t=[1:0.1:9]

> y=sin(t)

> plot(y)

>

>

> and octave plot this:

>

>

http://tinypic.com/r/4uc56t/6>

> why it's showing my field as t=[10:90]

> this problem apper also in other function, and it's analogy eg. t=[1:0.01:9]

> it shows t as from 100 to 900

>

> i'm using octave (3.6.2) + xoctave + packages i installed during

> installation

>

> please help me ;)

> thx in advance

You need to include "t" in the plot.

plot (t, y)

Ben

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