in this tutorial I'll demonstrate how to
create synthetic data using Igor's built
in mathematical and random number of
functions on the command line type set
random seed 0.1 then press enter this
initializes the random number generator
so that you will get the same results as
i get in this tutorial now type the
following statement on the command line
this statement creates two waves fake
accent fake why each with a hundred rose
function noise returns random numbers
from a uniform distribution between
minus five and five assignment fake ax
equals B noise 5+5 adds the random
numbers to the value 5 and fills the X
wave with the results now type the
following statement on the command line
this statement signs an exponential
number plus a noise component to the
fake wave the Gino's function generates
the noise component Gino's returns a
random value from a Gaussian
distribution such that the standard
deviation of an infinite number of such
values would be 0.1 in this example I've
used 0.14 the Gino's argument but the
argument for the Gino's function can be
any number select the windows new graph
menu item in the white waves list select
fake why in the X wave list select fake
X then click do it
this creates the graph since the fake X
wave was assigned random numbers with
the noise function values in the fake X
way we're not sorted in any order and
the graph is a jumble of connections
between points to turn off the line
connections between points on the graph
double-click in the middle of the graph
this opens the modified trace appearance
dialogue from the mode pop-up select
markers
from the pop-up menu of marker styles
select open circles then click do it
the graph should now look like this
we'll use the state in the next tutorial