<s>
In	O
contexts	O
of	O
solar	O
physics	O
and	O
data	B-General_Concept
analysis	I-General_Concept
,	O
Ana	B-Application
is	O
a	O
computer	O
language	O
that	O
is	O
designed	O
for	O
array	O
processing	O
and	O
image	O
data	B-General_Concept
analysis	I-General_Concept
.	O
</s>
<s>
Ana	B-Application
began	O
as	O
a	O
fork	B-Application
of	O
an	O
early	O
version	O
of	O
IDL	B-Language
,	O
but	O
has	O
diverged	O
significantly	O
since	O
then	O
.	O
</s>
<s>
It	O
is	O
particularly	O
notable	O
for	O
being	O
the	O
only	O
known	O
fork	B-Application
of	O
IDL	B-Language
from	O
its	O
early	O
days	O
as	O
a	O
quasi-open-source	O
software	O
package	O
.	O
</s>
<s>
Ana	B-Application
was	O
used	O
as	O
early	O
as	O
1989	O
to	O
track	O
solar	O
granulation	O
using	O
the	O
SOUP	O
instrument	O
on	O
Spacelab	O
,	O
and	O
by	O
the	O
late	O
1990s	O
it	O
was	O
in	O
common	O
use	O
at	O
the	O
Lockheed-Martin	O
Space	O
Applications	O
Laboratory	O
and	O
at	O
other	O
institutions	O
that	O
analyzed	O
data	O
from	O
the	O
TRACE	O
spacecraft	O
;	O
it	O
was	O
never	O
commonly	O
used	O
outside	O
the	O
community	O
of	O
active	O
solar	O
physics	O
researchers	O
,	O
but	O
represents	O
a	O
significant	O
step	O
forward	O
in	O
data	B-General_Concept
analysis	I-General_Concept
tools	O
in	O
that	O
era	O
.	O
</s>
<s>
Ana	B-Application
was	O
ultimately	O
used	O
to	O
implement	O
several	O
important	O
data	O
visualization	O
tools	O
that	O
advanced	O
the	O
state	O
of	O
the	O
art	O
,	O
in	O
the	O
late	O
1990s	O
--	O
notably	O
a	O
multispectral	O
image	O
viewer	O
that	O
was	O
used	O
for	O
several	O
space	O
missions	O
including	O
Yohkoh	O
,	O
SOHO	O
,	O
TRACE	O
,	O
and	O
Hinode	O
.	O
</s>
<s>
Ana	B-Application
appears	O
to	O
have	O
been	O
intended	O
as	O
free	B-Application
software	I-Application
though	O
it	O
is	O
not	O
distributed	O
under	O
a	O
recognized	O
FOSS	B-License
license	O
.	O
</s>
<s>
It	O
remains	O
available	O
as	O
source	O
code	O
,	O
primarily	O
through	O
the	O
Solarsoft	B-Application
distribution	O
system	O
,	O
but	O
its	O
role	O
as	O
an	O
open	O
source	O
,	O
reproducible	O
data	B-General_Concept
analysis	I-General_Concept
language	O
has	O
been	O
subsumed	O
by	O
more	O
recent	O
tools	O
such	O
as	O
PDL	B-Language
and	O
Numpy/Astropy	O
.	O
</s>
