diff --git a/doc/variable.html b/doc/variable.html index d8614d7fc3..0efada5337 100644 --- a/doc/variable.html +++ b/doc/variable.html @@ -374,7 +374,7 @@ operators, math functions, group functions, region functions, atom values, atom vectors, compute references, fix references, and references to other variables.

-
+
@@ -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 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 command, it will generate this sequence of output timesteps: 

100,200,300,400,1000,2000,3000,4000,10000,20000,etc
-

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 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 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
@@ -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.

-
Number 0.2, 100, 1.0e20, -15.4, etc
Constant PI
Thermo keywords vol, pe, ebond, etc
+
c_ID global scalar, or per-atom vector
c_ID[I] Ith element of global vector, or atom I's value in per-atom vector, or Ith column from per-atom array
c_ID[I][J] 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.

-
+
f_ID global scalar, or per-atom vector
f_ID[I] Ith element of global vector, or atom I's value in per-atom vector, or Ith column from per-atom array
f_ID[I][J] 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.

-
+
v_name scalar, or per-atom vector
v_name[I] atom I's value in per-atom vector
diff --git a/doc/variable.txt b/doc/variable.txt index c546e009ca..30d9da6525 100644 --- a/doc/variable.txt +++ b/doc/variable.txt @@ -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