►
From YouTube: SimPEG Meeting November, 24th
Description
SimPEG weekly meeting from November 24th, 2021
A
Hello
welcome
to
another
week
I
see
y'all
in
the
afternoon
today
we
had
our
the
seminar
last
week.
It
seemed
to
go
well
as
a
decent
amount
of
attendance.
There
lindsay
is
had
put
up
an
op
an
option
for
next
for
next
month.
So
you
put
up
a
discussion
on
what
we're
what
we
can
do
for
next
month
for
the
seminar
she's,
not
here
so
I'll
talk
through
it,
but
we
were
essentially.
We
don't
have
one
to
give
one
next
month,
but
it
is
a
december.
A
It's
a
year
end
thing,
so
she
had
thought
that
it
could
be
a
good
time
to
have
like
a
almost
like
a
simple
poster
session
type
of
thing
just
like
if
you've
presented
posters
over
the
past
year
or
something
like,
if
you
want
to
share
it,
you
can
comment
to
come
and
bring
it.
Nothing
not
like.
You
have
to
create
something
new
for
this.
A
A
A
Yeah,
so
that's,
but
you
can
like
do
you
can
share
your
screen?
You
can
set
up
different
areas.
You
can
talk
to
people
run
around
interact
with
people
as
you're
moving
past
them.
It's
just
something.
It's
we.
I
know
we.
I
did
a
post
session
earlier
much
earlier
this
year.
That
was
like
that
and
it
was
it
wasn't.
I
think
it
worked.
Well,
I
mean
it
was
at
six
a.m
or
I
think
it
was
like
five
a.m.
A
Four
a.m
in
the
morning
or
something
so
I
was
really
tired,
but
it
seemed
like
an
interesting
concept
and
just
something
to
do
so.
If
you
guys
are,
if
you
have
posters
that
you'd
be
willing
to
share,
maybe
we
can
figure
out
what
we
can
highlight,
basically
highlighting
any
kind
of
research,
synthetic
posters
presented
over
the
past
year.
So
if
you
have
things-
and
you
can
think
about
it-
maybe
lindsey
that
she's
coming
on,
maybe
we
can
start
up
the
list
and
see
if
we
have
enough
posters
to
make
something
work.
A
C
Yeah
I
didn't
hear
at
the
beginning,
so
apologies
if
I
repeat
joe,
but
was
kind
of
thinking,
because
we
don't
have
anybody
lined
up
for
december.
Maybe
just
whoever's
done
a
poster
either
for
igu
or
or
something
else
show
up.
We
can
just
have
a
bit
of
like
a
low-key
chat,
joe
mentioned,
maybe
doing
it
in
gather
town,
which
could
be
kind
of
fun,
because
then
it's
a
little
more
social.
You
just
kind
of
walk
around
and
see
what
people
are
up
to
and
it's
not
kind
of
like
yeah.
C
We
don't
have
to
kind
of
well,
depending
on
how
many
posters
there
are
like.
If
there's
only
three,
then
you
know
we
could
just
do
all
together.
If
there's
like
six
seven,
then
you
know
we
don't
want
to
necessarily
have
to
cut
everybody
off
if
there's
some
cool
stuff
that
you're
more
interested
in
checking
out
and
other
things
that
you've
heard
heard
before
and
don't
need
to
spend
as
much
time
at
yeah.
So
I
guess
maybe
even
just
with
people
here
are
there
posters
that
people
would
want
to
speak
to.
C
D
E
D
A
Any
other
announcements
agenda
items
people
would
like
to
talk
about
later
on
after
we
get
through
some
quick
reports
or
guess
I'll
just
go
right
into
it
right
as
well.
Okay,
so
zhang
was
able
to
I
pulled
in
the
my
pr
for
his
cross
gradient
patch,
so
that
will
get
be
getting
pulled
into
simpeg
very
soon.
D
A
A
I
was
planning
on
just
making
it
go
poof,
but
if
we
want
to
like
actually
throw
errors,
that's
okay
too,
it's
just
like
it
will.
We
can
the
only
the
point
of
that
would
be
having
better
error
messages
saying
you
can't
use
this
anymore
use
this
before
it
actually
goes
exactly
away,
so
that
could
be
an
option.
C
A
A
A
F
A
In
general,
I
so
I
downloaded
that
I
converted
it
to
like
left
and
I
have
a
audio
record.
I
converted
it
to
audio
data.
Basically,
so
you
could
listen
to
it.
Listen
to
what
mt
data
sounds
like
it
was.
It
was
a
nice
nice
just
nice
thing
to
do
also,
if
anyone
has
any
other
thoughts
on
like
auditory
things
that
represent
exploration,
geophysics
would
be
interesting
to
see.
I
hopefully
will
be
able
to
share
that.
A
D
Yeah
just
to
follow
the
what
you
just
mentioned
about
the
data,
so
the
last
two
months
I
attended
a
competition
award
named
is
faa,
so
I
noticed
in
this
organization
they
shared
a
lot
of
the
data
in
the
different
areas
for
each
areas.
They
consist
of
the
airborne
geophysical
data,
em
data,
empty
data
and
seismic
data,
as
well
as
geochemical
data,
so
they're
all
publicly
available.
So
I
think
maybe
it's
it's
good
for
if
you
are
interesting,
maybe
it
can
be
used
for
the
research.
D
A
B
A
B
I'm
struggling
with
mt
man
devon.
You
were
not
here
last
last
week,
but
maybe
having
your
if
we
want
to
chat
later
after
this
tried
to
do
the
forward
simulation
with
typography,
and
I
cannot
for
the
life
of
me,
have
the
e3d
fourth
simulation
match.
Simpek
or
I
guess
the
other
way
around.
The
e3d
for
simulation
makes
sense,
and
if
I
grab
the
exact
same
mesh
and
I
throw
that
sim
peg,
I
just
get
I
get
rubbish
out.
Things
are
all
over.
F
B
B
G
Out
of
ideas,
I
tried
a
lot
of
things
really
you
have
how
much
that's
just
like
a
dome
you're
going
over
or
like
I
looked
at
that,
I
looked
like
I
looked
at
that
project
that
I
didn't.
I
guess
there
wasn't
like
a
lot
of
topography
but
like
in
the
grand
scheme
of
the
whole
thing,
but
there
was
topography
in
it
seemed
to
do
okay.
B
Yeah
I
mean
I
thought
so,
but
if
you
compare,
you
know
head
to
head
same
same
model,
e3d
mt
and
simpac,
they
give
like
wildly
different
ford
simulations.
The
same
pack
doesn't
look
right
at
all.
It's
like
from
one
station
to
the
other.
It's
like
all
over
the
place,
so
I
don't
know
yeah.
I
tried
the
drape
straight
on
surface.
Maybe
even
move
them
a
little
bit
up
went
up
to
the
sky,
nothing
works.
B
B
A
F
So
I
guess
what
I'm
saying
is
we
don't
have
a
time
domain,
em
simulation
class
that
works
for
all
receivers.
However,
we
can
do
a
time
domain
simulation
that
would
be
able
to
work
with
any
data
set.
You
just
have
to
pick
the
corresponding
simulation
and
receiver
classes,
so
I
guess
what
I'm
bringing
up
is.
Do
we
want
to
make
a
universal
functionality
so
that
every
simulation
class
can
can
predict
every
single
one
of
the
the
data
types
or
do
we
just
want
to?
F
F
C
At
this
point,
I
think
we
should
just
nudge
people
to
where
it's
implemented,
I
mean
sure
we
can.
We
can
certainly
work
on
fleshing
that
out.
It's
always
nice
to
have
extra
test
cases,
but
it's
not
like
it's
it's
critical.
I
mean
if
somebody
needs
to
simulate
b
in
a
in
a
time
domain
simulation,
it's
possible.
You
just
have
to
use
the
correct
formulation,
so
it's
kind
of
like
a
nice
to
have,
but
it's
not
on,
I
would
say,
like
a
critical
path
to
usability.
C
What
I
think
would
be
even
a
perhaps
a
bit
of
a
simpler
kind
of
first
example
would
be
just
to
test
electric
dipoles,
so
the
loops
would
be
good
too,
but
in
this
case
to
test
basically
an
electric
dipole,
either
for
like
e
on
edges
or
for
j
through
faces
and
test
that
we
get
comparable
results.
That
would
be
a
very
sort
of
simple,
first
test
before
building
complexity
and
needing
to
actually
go
ahead
and
solve
the
magnetostatic
problem.
First
and
things
like
that.
F
Yeah
yeah
cause
like
it
didn't
seem
like
it
was
necessary
for
the
stuff
that
you
had
just
implemented
yeah
as
of
right.
Now,
though,
I
was
going
to
well,
I
I
guess
yeah
look
around
for
the
different
simulations
we
have,
but
I'd
like
to
be
able
to
show
that
if
I
forward
model
the
data
for
a
loop
source
that,
I
guess
implements
the
source
term
as
a
magnetic
source.
F
And
then
I
implement
a
a
current
loop
out
of
a
segment
of
wires
and
in
a
different
formulation,
it's
being
put
in
as
like
segments
of
of
current
I'd
love
to
be
able
to
get
those
to
match,
and
that
is
a
good
test.
But
then
we
could
also
do
one
where
we
compare
a
electric
dipole
with
the
analytic
solution
of
an
electric
dipole
in
a
whole
space,
or
something
like
that.
C
So
for
the
implementation
of
the
line
current
for
the
e
formulation
is
that
the
current
is
on
edges,
whereas
if
we
use
the
either
the
hj
formulation,
the
current
is
going
to
go
through
faces
and
so
we're
dealing
with
different
quantities
right.
We
need
to
either
be
like
handling
edge,
lengths
and
things
like
that,
or
we
need
to
handle
face
areas,
and
so
I'd
recommend,
starting
with
the
dipole,
because
it's
super
simple.
It
can
reconcile
sort
of
the
differences
in
location
before
then
dealing
with
circular
loops.
C
Where
now
there's
a
number
of
extra
things
happening
right
is
we're
now
dealing
with
a
geometry
that
is
perhaps
square
rather
than
a
circle,
and
we
also
have
to
handle
the
magnetostatic
problem
if
you're
doing
time
domain
so
agreed
that
both
are
both
are
worth
doing.
But
the
electric
dipole
is
a
simpler
test
case
to
kind
of
work
through
any
any
discrepancies,
you're
finding.