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git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@12853 f3b2605a-c512-4ea7-a41b-209d697bcdaa

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sjplimp 2014-12-22 23:37:18 +00:00
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34
doc/variable.html
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@ -374,7 +374,7 @@ operators, math functions, group functions, region functions, atom
values, atom vectors, compute references, fix references, and
references to other variables.
</P>
<DIV ALIGN=center><TABLE WIDTH="0%" BORDER=1 >
<DIV ALIGN=center><TABLE BORDER=1 >
<TR><TD >Number</TD><TD > 0.2, 100, 1.0e20, -15.4, etc</TD></TR>
<TR><TD >Constant</TD><TD > PI</TD></TR>
<TR><TD >Thermo keywords</TD><TD > vol, pe, ebond, etc</TD></TR>
@ -533,22 +533,24 @@ command, it will generate the sequence of output timesteps:
</PRE>
<P>The logfreq(x,y,z) function uses the current timestep to generate a
new timestep. X,y,z > 0 and y < z are required. The generated
timesteps are gridpoints on a base-z logarithmic scale
i.e. they follow the sequence
x,2x,3x,...y*x,x*z,2x*z,3x*z,...y*x*z,x*z^2,2x*z^2,etc. For any
current timestep, the next timestep in the sequence is returned. Thus
if logfreq(100,4,10) is used in a variable by the <A HREF = "dump_modify.html">dump_modify
every</A> command, it will generate the sequence of
timesteps are on a base-z logarithmic scale, starting with x, and the
y value is how many of the z-1 possible timesteps within one
logarithmic interval are generated. I.e. the timesteps follow the
sequence x,2x,3x,...y*x,x*z,2x*z,3x*z,...y*x*z,x*z^2,2x*z^2,etc. For
any current timestep, the next timestep in the sequence is returned.
Thus if logfreq(100,4,10) is used in a variable by the <A HREF = "dump_modify.html">dump_modify
every</A> command, it will generate this sequence of
output timesteps:
</P>
<PRE>100,200,300,400,1000,2000,3000,4000,10000,20000,etc
</PRE>
<P>The logfreq2(x,y,z) function is similar to logfreq, except
the y timesteps generated on the range [x,x*z) are always
evenly spaced, and y < z is not required.
Thus, if logfreq2(100,18,10) is used in a variable by the
<A HREF = "dump_modify.html">dump_modify every</A> command, it will generate
the sequence of output timesteps:
<P>The logfreq2(x,y,z) function is similar to logfreq, except a single
logarithmic interval is divided into y equally-spaced timesteps and
all of them are output. Y < z is not required. Thus, if
logfreq2(100,18,10) is used in a variable by the <A HREF = "dump_modify.html">dump_modify
every</A> command, then the interval between 100 and
1000 is divided as 900/18 = 50 steps, and it will generate the
sequence of output timesteps:
</P>
<PRE>100,150,200,...950,1000,1500,2000,...9500,10000,15000,etc
</PRE>
@ -785,7 +787,7 @@ kind of values they produce.
There is no ambiguity as to what a reference means, since computes
only produce global or per-atom quantities, never both.
</P>
<DIV ALIGN=center><TABLE WIDTH="0%" BORDER=1 >
<DIV ALIGN=center><TABLE BORDER=1 >
<TR><TD >c_ID</TD><TD > global scalar, or per-atom vector</TD></TR>
<TR><TD >c_ID[I]</TD><TD > Ith element of global vector, or atom I's value in per-atom vector, or Ith column from per-atom array</TD></TR>
<TR><TD >c_ID[I][J]</TD><TD > I,J element of global array, or atom I's Jth value in per-atom array
@ -822,7 +824,7 @@ compute references listed in the above table, where "c_" is replaced
by "f_". Again, there is no ambiguity as to what a reference means,
since fixes only produce global or per-atom quantities, never both.
</P>
<DIV ALIGN=center><TABLE WIDTH="0%" BORDER=1 >
<DIV ALIGN=center><TABLE BORDER=1 >
<TR><TD >f_ID</TD><TD > global scalar, or per-atom vector</TD></TR>
<TR><TD >f_ID[I]</TD><TD > Ith element of global vector, or atom I's value in per-atom vector, or Ith column from per-atom array</TD></TR>
<TR><TD >f_ID[I][J]</TD><TD > I,J element of global array, or atom I's Jth value in per-atom array
@ -868,7 +870,7 @@ other atom-style or atomfile-style variables.
There is no ambiguity as to what a reference means, since variables
produce only a global scalar or a per-atom vector, never both.
</P>
<DIV ALIGN=center><TABLE WIDTH="0%" BORDER=1 >
<DIV ALIGN=center><TABLE BORDER=1 >
<TR><TD >v_name</TD><TD > scalar, or per-atom vector</TD></TR>
<TR><TD >v_name[I]</TD><TD > atom I's value in per-atom vector
</TD></TR></TABLE></DIV>

26
doc/variable.txt
View File

@ -533,22 +533,24 @@ command, it will generate the sequence of output timesteps:
The logfreq(x,y,z) function uses the current timestep to generate a
new timestep. X,y,z > 0 and y < z are required. The generated
timesteps are gridpoints on a base-z logarithmic scale
i.e. they follow the sequence
x,2x,3x,...y*x,x*z,2x*z,3x*z,...y*x*z,x*z^2,2x*z^2,etc. For any
current timestep, the next timestep in the sequence is returned. Thus
if logfreq(100,4,10) is used in a variable by the "dump_modify
every"_dump_modify.html command, it will generate the sequence of
timesteps are on a base-z logarithmic scale, starting with x, and the
y value is how many of the z-1 possible timesteps within one
logarithmic interval are generated. I.e. the timesteps follow the
sequence x,2x,3x,...y*x,x*z,2x*z,3x*z,...y*x*z,x*z^2,2x*z^2,etc. For
any current timestep, the next timestep in the sequence is returned.
Thus if logfreq(100,4,10) is used in a variable by the "dump_modify
every"_dump_modify.html command, it will generate this sequence of
output timesteps:
100,200,300,400,1000,2000,3000,4000,10000,20000,etc :pre
The logfreq2(x,y,z) function is similar to logfreq, except
the y timesteps generated on the range \[x,x*z) are always
evenly spaced, and y < z is not required.
Thus, if logfreq2(100,18,10) is used in a variable by the
"dump_modify every"_dump_modify.html command, it will generate
the sequence of output timesteps:
The logfreq2(x,y,z) function is similar to logfreq, except a single
logarithmic interval is divided into y equally-spaced timesteps and
all of them are output. Y < z is not required. Thus, if
logfreq2(100,18,10) is used in a variable by the "dump_modify
every"_dump_modify.html command, then the interval between 100 and
1000 is divided as 900/18 = 50 steps, and it will generate the
sequence of output timesteps:
100,150,200,...950,1000,1500,2000,...9500,10000,15000,etc :pre