problem with stairs plot

Hello I have just delighted come across 'stairs', which does exactly what I want...except it doesn't.

Even the example given: >> x = linspace(-2*pi,2*pi,40); >> stairs(x,sin(x))

plots me a single straight line between (0,0) and (1,1). (Everything I try gives this plot result)

Any great ideas for the obvious thing I'm doing wrong very gratefully received!

yours, Flummoxed.

Answer 1

[Daniel Shub]

Is something overloading stairs? Try

which -all stairs

it should give something like: .../toolbox/matlab/specgraph/stairs.m

[deborah]

thanks for your reply.

unfortunately it doesn't seem to be the fix (though, good thought!)....

indeed it says: C:\Program Files\MATLAB\R2007b\toolbox\matlab\specgraph\stairs.m

[Fangjun Jiang]

What do you see if you do:

x = linspace(-2*pi,2*pi,40);

figure;plot(x,sin(x))

Answer 2

[Fangjun Jiang]

What's wrong? try stairs(1:20,1:20)

[deborah]

thanks for your reply.

What's wrong is that everything, inlcuding the example you gave, but also the sine wave example, give a straight line plot between (0,0) and (1,1)... I'm not sure how to be clearer...

[deborah]

i mean a diagonal line!

[Fangjun Jiang]

try this.

close all

stairs(1:20,1:20);

[deborah]

same result! :(

Answer 3

[deborah]

I have no idea, but now after 3 reboots it suddenly works. That'll be fixed then..... thanks for people's suggestions.