Ok. Is the column9 average based on all files - the average of column9 from grad.1000, grad.1001...grad.nnnn? Or is it based on just the file you are currently working on?
BTW the comparison
is the same as
not using division.
ok so I'm having major issues trying to figure this out:
I have this program that I'm inputting the files in hte current directory which are image files...it spits out 5 line chunks describing the files...
filename: (name of file)
size: (100 x 200)
arbitrary data
arbitrary data
arbitrary... (4 Replies)
How to sort such files which contains records of varying length and varying lines? (With respect to Bash shell)
Eg:
Each record begins with a sting of 1/0(binary) which may or may not be followed by properties like AB,BS etc.
I have to sort such records on the basis of 1/0 string and keep the... (2 Replies)
Hi
I have 2 file with many lines and colums and i want to do some operation for each value in the 2 files :
Matrix1 :
a11 a12 a13 a14 ...
a21 a22 a23 a42 ...
a31 a32 a33 a32 ...
...
Matrix2 :
b11 b12 b13 b14 ...
b21 b22 b23 b42 ...
b31 b32 b33 b32 ...
...
I want to have the... (8 Replies)
Hi ,
I have two files
aaa.txt (which contains)
1 2 3 4 5 6 7 8
9 10 11 12
and bbb.txt (which contains)
-1 -2 -3 -4 -5 -6 5 -8
0 3 0 0
the output that I intended to have is
0 0 0 0 0 0 6 0
4.5 6.5 5.5 6
i.e. Averaging
the script is in the file abc
Begin{START of the... (2 Replies)
find / -type f 2> /dev/null | find -inum +1 2> /dev/null | find -mtime -30 2> /dev/null
what i am trying to do i search all regular files in root directory with one or more
inodes modified within last 30 days.
the /dev/null is to suppress the permission denied outputs.
i am now trying to... (5 Replies)
i have file a
123
234
456
567
678
and file b
123|xxx|hhh|ppp or zzz
234|rrr|ttt|xxx
432|ttt|mmm|nnn
678|cft|byt|mop
i want to compare file a to file b such that when each of the lines in file a can be found in file b column1 and also xxx or hhh or ppp or zzz can be... (12 Replies)
I have the following set of files and I want to order them according to the ascending values of the run:
For example, doing
ls -lrt *drw*.log
gives
n02-z30-sr65-rgdt0p25-dc0p08-4x3drw.log
n02-z30-sr65-rgdt0p25-dc0p03-8x6drw.log
n02-z30-sr65-rgdt0p25-dc0p01-8x6drw.log
... (18 Replies)
Dears.
kindly guide !!!
I have data, which is delimited by | .
it should contain 26 columns, but one column data contain | makes few row to 27 columns.
I want to find rows have 27 columns and then concatenate the specific columns to single column to make it 26 columns.
Kindly help, Can... (3 Replies)
Discussion started by: sadique.manzar
3 Replies
LEARN ABOUT DEBIAN
s_grad_grad
s_grad_grad(3rheolef) rheolef-6.1 s_grad_grad(3rheolef)NAME
s_grad_grad -- grad_grad-like operator for the Stokes stream function computation
SYNOPSIS
form(const space V, const space& V, "s_grad_grad");
DESCRIPTION
Assembly the form associated to the -div(grad) variant operator on a finite element space V. The V space may be a either P1 or P2 finite
element space. See also form(2) and space(2). On cartesian coordinate systems, the form coincide with the "grad_grad" one (see
grad_grad(3)):
/
|
a(u,v) = | grad(u).grad(v) dx
|
/ Omega
The stream function on tri-dimensionnal cartesian coordinate systems is such that
u = curl psi
div psi = 0
where u is the velocity field. Taking the curl of the first relation, using the identity:
curl(curl(psi)) = -div(grad(psi)) + grad(div(psi))
and using the div(psi)=0 relation leads to:
-div(grad(psi)) = curl(u)
This relation leads to a variational formulation involving the the "grad_grad" and the "curl" forms (see grad_grad(3), curl(3)).
In the axisymmetric case, the stream function psi is scalar ans is defined from the velocity field u=(ur,uz) by (see Batchelor, 6th ed.,
1967, p 543):
d psi d psi
uz = (1/r) ----- and ur = - (1/r) -----
d r d r
See also http://en.wikipedia.org/wiki/Stokes_stream_function . Multiplying by rot(xi)=(d xi/dr, -d xi/dz), and integrating with r dr dz,
we get a well-posed variationnal problem:
a(psi,xi) = b(xi,u)
with
/
| (d psi d xi d psi d xi)
a(psi,xi) = | (----- ---- + ----- ----) dr dz
| ( d r d r d z d z )
/ Omega
and
/
| (d xi d xi )
b(xi,u) = | (---- ur - ---- uz) r dr dz
| (d z d r )
/ Omega
Notice that a is symmetric definite positive, but without the 'r' weight as is is usual for axisymmetric standard forms. The b form is
named "s_curl", for the Stokes curl variant of the "curl" operator (see s_curl(3)) as it is closely related to the "curl" operator, but
differs by the r and 1/r factors, as:
( d (r xi) d xi )
curl(xi) = ( (1/r) -------- ; - -----)
( d r d z )
while
( d xi d xi )
s_curl(xi) = ( ---- ; - ---- )
( d r d z )
EXAMPLE
The following piece of code build the form associated to the P1 approximation:
geo g("square");
space V(g, "P1");
form a(V, V, "s_grad_grad");
SEE ALSO form(2), space(2), grad_grad(3), grad_grad(3), curl(3), s_curl(3)rheolef-6.1 rheolef-6.1 s_grad_grad(3rheolef)