The_________ command is used to add ( or subtract) a variable by a number other that one.
Answers
Answer:
name = name of variable to define
style = delete or index or loop or world or universe or uloop or string or format or getenv or file or atomfile or python or internal or equal or vector or atom
delete = no args
index args = one or more strings
loop args = N
N = integer size of loop, loop from 1 to N inclusive
loop args = N pad
N = integer size of loop, loop from 1 to N inclusive
pad = all values will be same length, e.g. 001, 002, ..., 100
loop args = N1 N2
N1,N2 = loop from N1 to N2 inclusive
loop args = N1 N2 pad
N1,N2 = loop from N1 to N2 inclusive
pad = all values will be same length, e.g. 050, 051, ..., 100
world args = one string for each partition of processors
universe args = one or more strings
uloop args = N
N = integer size of loop
uloop args = N pad
N = integer size of loop
pad = all values will be same length, e.g. 001, 002, ..., 100
string arg = one string
format args = vname fstr
vname = name of equal-style variable to evaluate
fstr = C-style format string
getenv arg = one string
file arg = filename
atomfile arg = filename
python arg = function
internal arg = numeric value
equal or vector or atom args = one formula containing numbers, thermo keywords, math operations, group functions, atom values and vectors, compute/fix/variable references
numbers = 0.0, 100, -5.4, 2.8e-4, etc
constants = PI, version, on, off, true, false, yes, no
thermo keywords = vol, ke, press, etc from thermo_style
math operators = (), -x, x+y, x-y, x*y, x/y, x^y, x%y,
x == y, x != y, x < y, x <= y, x > y, x >= y, x && y, x || y, x |^ y, !x
math functions = sqrt(x), exp(x), ln(x), log(x), abs(x),
sin(x), cos(x), tan(x), asin(x), acos(x), atan(x), atan2(y,x),
random(x,y,z), normal(x,y,z), ceil(x), floor(x), round(x)
ramp(x,y), stagger(x,y), logfreq(x,y,z), logfreq2(x,y,z),
logfreq3(x,y,z), stride(x,y,z), stride2(x,y,z,a,b,c),
vdisplace(x,y), swiggle(x,y,z), cwiggle(x,y,z)
group functions = count(group), mass(group), charge(group),
xcm(group,dim), vcm(group,dim), fcm(group,dim),
bound(group,dir), gyration(group), ke(group),
angmom(group,dim), torque(group,dim),
inertia(group,dimdim), omega(group,dim)
region functions = count(group,region), mass(group,region), charge(group,region),
xcm(group,dim,region), vcm(group,dim,region), fcm(group,dim,region),
bound(group,dir,region), gyration(group,region), ke(group,reigon),
angmom(group,dim,region), torque(group,dim,region),
inertia(group,dimdim,region), omega(group,dim,region)
special functions = sum(x), min(x), max(x), ave(x), trap(x), slope(x), gmask(x), rmask(x), grmask(x,y), next(x)
feature functions = is_active(category,feature,exact), is_defined(category,id,exact)
atom value = id[i], mass[i], type[i], mol[i], x[i], y[i], z[i], vx[i], vy[i], vz[i], fx[i], fy[i], fz[i], q[i]
atom vector = id, mass, type, mol, x, y, z, vx, vy, vz, fx, fy, fz, q
compute references = c_ID, c_ID[i], c_ID[i][j], C_ID, C_ID[i]
fix references = f_ID, f_ID[i], f_ID[i][j], F_ID, F_ID[i]
variable references = v_name, v_name[i]
Examples
variable x index run1 run2 run3 run4 run5 run6 run7 run8
variable LoopVar loop $n
variable beta equal temp/3.0
variable b1 equal x[234]+0.5*vol
variable b1 equal "x[234] + 0.5*vol"
variable b equal xcm(mol1,x)/2.0
variable b equal c_myTemp
variable b atom x*y/vol
variable foo string myfile
variable foo internal 3.5
variable myPy python increase
variable f file values.txt
variable temp world 300.0 310.0 320.0 ${Tfinal}
variable x universe 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
variable x uloop 15 pad
variable str format x %.6g
variable x delete