<s>
IGOR	B-Application
Pro	I-Application
is	O
a	O
scientific	O
data	O
analysis	O
software	O
,	O
numerical	O
computing	O
environment	O
and	O
programming	O
language	O
that	O
runs	O
on	O
Windows	B-Application
or	O
Mac	B-Operating_System
operating	O
systems	O
.	O
</s>
<s>
It	O
is	O
developed	O
by	O
WaveMetrics	O
Inc.	O
,	O
and	O
was	O
originally	O
aimed	O
at	O
time	O
series	O
analysis	O
,	O
but	O
has	O
since	O
then	O
evolved	O
and	O
covers	O
other	O
applications	O
such	O
as	O
curve	B-Algorithm
fitting	I-Algorithm
and	O
image	B-Algorithm
processing	I-Algorithm
.	O
</s>
<s>
It	O
comes	O
with	O
a	O
fully	O
functional	O
programming	O
language	O
and	O
compiler	B-Language
,	O
but	O
many	O
functions	O
are	O
also	O
accessible	O
through	O
menus	O
.	O
</s>
<s>
IGOR	B-Application
Pro	I-Application
is	O
primarily	O
known	O
for	O
its	O
graphics	O
capabilities	O
,	O
and	O
like	O
Origin	B-Application
and	O
other	O
similar	B-Application
programs	I-Application
,	O
is	O
often	O
used	O
to	O
generate	O
plots	O
for	O
scientific	O
and	O
other	O
publications	O
.	O
</s>
<s>
Other	O
features	O
include	O
the	O
possibility	O
of	O
extending	O
the	O
built-in	O
functions	O
with	O
external	O
operations	O
(	O
XOP	O
)	O
allowing	O
data	B-Algorithm
acquisition	I-Algorithm
,	O
manipulation	O
and	O
analysis	O
features	O
,	O
communication	O
with	O
external	O
devices	O
and	O
in	O
principle	O
any	O
other	O
task	O
that	O
can	O
be	O
programmed	O
in	O
C	B-Language
or	O
C++	B-Language
.	O
</s>
<s>
Igor	B-Application
Pro	I-Application
has	O
several	O
features	O
that	O
distinguish	O
it	O
from	O
other	O
graphing	O
programs	O
.	O
</s>
<s>
It	O
is	O
completely	O
programmable	O
with	O
a	O
compiled	B-Language
,	O
C-like	O
programming	O
language	O
.	O
</s>
<s>
Several	O
large	O
scientific	O
user	O
facilities	O
,	O
such	O
as	O
Argonne	O
National	O
Laboratory	O
,	O
have	O
developed	O
and	O
published	O
data	O
analysis	O
libraries	O
for	O
Igor	B-Application
Pro	I-Application
.	O
</s>
<s>
save	O
spectra	O
in	O
Igor	B-Application
Pro	I-Application
file	O
formats	O
.	O
</s>
<s>
Igor	B-Application
Pro	I-Application
has	O
been	O
used	O
as	O
platform	O
for	O
the	O
modelling	O
of	O
impedance	O
data	O
.	O
</s>
