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fix_ave_time.cpp
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Mon, Jul 1, 01:14

fix_ave_time.cpp
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/* ----------------------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
/* ----------------------------------------------------------------------
Contributing author: Pieter in 't Veld (SNL)
------------------------------------------------------------------------- */
#include "stdlib.h"
#include "string.h"
#include "fix_ave_time.h"
#include "update.h"
#include "modify.h"
#include "compute.h"
#include "group.h"
#include "input.h"
#include "variable.h"
#include "memory.h"
#include "error.h"
using namespace LAMMPS_NS;
enum{COMPUTE,FIX,VARIABLE};
enum{ONE,RUNNING,WINDOW};
enum{SCALAR,VECTOR};
#define INVOKED_SCALAR 1
#define INVOKED_VECTOR 2
#define INVOKED_ARRAY 4
/* ---------------------------------------------------------------------- */
FixAveTime::FixAveTime(LAMMPS *lmp, int narg, char **arg) :
Fix(lmp, narg, arg)
{
if (narg < 7) error->all("Illegal fix ave/time command");
MPI_Comm_rank(world,&me);
nevery = atoi(arg[3]);
nrepeat = atoi(arg[4]);
nfreq = atoi(arg[5]);
global_freq = nfreq;
time_depend = 1;
// scan values to count them
// then read options so know mode = SCALAR/VECTOR before re-reading values
nvalues = 0;
int iarg = 6;
while (iarg < narg) {
if ((strncmp(arg[iarg],"c_",2) == 0) ||
(strncmp(arg[iarg],"f_",2) == 0) ||
(strncmp(arg[iarg],"v_",2) == 0)) {
nvalues++;
iarg++;
} else break;
}
options(narg,arg);
// parse values until one isn't recognized
which = new int[nvalues];
argindex = new int[nvalues];
ids = new char*[nvalues];
value2index = new int[nvalues];
nvalues = 0;
iarg = 6;
while (iarg < narg) {
if (strncmp(arg[iarg],"c_",2) == 0 ||
strncmp(arg[iarg],"f_",2) == 0 ||
strncmp(arg[iarg],"v_",2) == 0) {
if (arg[iarg][0] == 'c') which[nvalues] = COMPUTE;
else if (arg[iarg][0] == 'f') which[nvalues] = FIX;
else if (arg[iarg][0] == 'v') which[nvalues] = VARIABLE;
int n = strlen(arg[iarg]);
char *suffix = new char[n];
strcpy(suffix,&arg[iarg][2]);
char *ptr = strchr(suffix,'[');
if (ptr) {
if (suffix[strlen(suffix)-1] != ']')
error->all("Illegal fix ave/time command");
argindex[nvalues] = atoi(ptr+1);
*ptr = '\0';
} else argindex[nvalues] = 0;
n = strlen(suffix) + 1;
ids[nvalues] = new char[n];
strcpy(ids[nvalues],suffix);
nvalues++;
delete [] suffix;
} else break;
iarg++;
}
// setup and error check
// for fix inputs, check that fix frequency is acceptable
if (nevery <= 0) error->all("Illegal fix ave/time command");
if (nfreq < nevery || nfreq % nevery || (nrepeat-1)*nevery >= nfreq)
error->all("Illegal fix ave/time command");
for (int i = 0; i < nvalues; i++) {
if (which[i] == COMPUTE && mode == SCALAR) {
int icompute = modify->find_compute(ids[i]);
if (icompute < 0)
error->all("Compute ID for fix ave/time does not exist");
if (argindex[i] == 0 && modify->compute[icompute]->scalar_flag == 0)
error->all("Fix ave/time compute does not calculate a scalar");
if (argindex[i] && modify->compute[icompute]->vector_flag == 0)
error->all("Fix ave/time compute does not calculate a vector");
if (argindex[i] && argindex[i] > modify->compute[icompute]->size_vector)
error->all("Fix ave/time compute vector is accessed out-of-range");
} else if (which[i] == COMPUTE && mode == VECTOR) {
int icompute = modify->find_compute(ids[i]);
if (icompute < 0)
error->all("Compute ID for fix ave/time does not exist");
if (argindex[i] == 0 && modify->compute[icompute]->vector_flag == 0)
error->all("Fix ave/time compute does not calculate a vector");
if (argindex[i] && modify->compute[icompute]->array_flag == 0)
error->all("Fix ave/time compute does not calculate a array");
if (argindex[i] &&
argindex[i] > modify->compute[icompute]->size_array_cols)
error->all("Fix ave/time compute array is accessed out-of-range");
} else if (which[i] == FIX && mode == SCALAR) {
int ifix = modify->find_fix(ids[i]);
if (ifix < 0)
error->all("Fix ID for fix ave/time does not exist");
if (argindex[i] == 0 && modify->fix[ifix]->scalar_flag == 0)
error->all("Fix ave/time fix does not calculate a scalar");
if (argindex[i] && modify->fix[ifix]->vector_flag == 0)
error->all("Fix ave/time fix does not calculate a vector");
if (argindex[i] && argindex[i] > modify->fix[ifix]->size_vector)
error->all("Fix ave/time fix vector is accessed out-of-range");
if (nevery % modify->fix[ifix]->global_freq)
error->all("Fix for fix ave/time not computed at compatible time");
} else if (which[i] == FIX && mode == VECTOR) {
int ifix = modify->find_fix(ids[i]);
if (ifix < 0)
error->all("Fix ID for fix ave/time does not exist");
if (argindex[i] == 0 && modify->fix[ifix]->scalar_flag == 0)
error->all("Fix ave/time fix does not calculate a vector");
if (argindex[i] && modify->fix[ifix]->vector_flag == 0)
error->all("Fix ave/time fix does not calculate a array");
if (argindex[i] && argindex[i] > modify->fix[ifix]->size_array_cols)
error->all("Fix ave/time fix array is accessed out-of-range");
if (nevery % modify->fix[ifix]->global_freq)
error->all("Fix for fix ave/time not computed at compatible time");
} else if (which[i] == VARIABLE) {
int ivariable = input->variable->find(ids[i]);
if (ivariable < 0)
error->all("Variable name for fix ave/time does not exist");
if (input->variable->equalstyle(ivariable) == 0)
error->all("Fix ave/time variable is not equal-style variable");
if (mode == VECTOR)
error->all("Fix ave/time cannot use variable with vector mode");
}
}
// if VECTOR mode, check that all columns are same length
// nrows = # of rows in output array
if (mode == VECTOR) {
int length;
for (int i = 0; i < nvalues; i++) {
if (which[i] == COMPUTE) {
int icompute = modify->find_compute(ids[i]);
if (argindex[i] == 0) length = modify->compute[icompute]->size_vector;
else length = modify->compute[icompute]->size_array_rows;
} else if (which[i] == FIX) {
int ifix = modify->find_fix(ids[i]);
if (argindex[i] == 0) length = modify->fix[ifix]->size_vector;
else length = modify->fix[ifix]->size_array_rows;
}
if (i == 0) nrows = length;
else if (length != nrows)
error->all("Fix ave/time columns are inconsistent lengths");
}
column = new double[nrows];
}
// print file comment lines
if (fp && me == 0) {
if (title1) fprintf(fp,"%s\n",title1);
else fprintf(fp,"# Time-averaged data for fix %s\n",id);
if (title2) fprintf(fp,"%s\n",title2);
else if (mode == SCALAR) {
fprintf(fp,"# TimeStep");
for (int i = 0; i < nvalues; i++) fprintf(fp," %s",arg[6+i]);
fprintf(fp,"\n");
} else fprintf(fp,"# TimeStep Number-of-rows\n");
if (title3 && mode == VECTOR) fprintf(fp,"%s\n",title3);
else if (mode == VECTOR) {
fprintf(fp,"# Row");
for (int i = 0; i < nvalues; i++) fprintf(fp," %s",arg[6+i]);
fprintf(fp,"\n");
}
}
delete [] title1;
delete [] title2;
delete [] title3;
// allocate and initialize memory for averaging
vector = vector_total = NULL;
vector_list = NULL;
array = array_total = NULL;
array_list = NULL;
if (mode == SCALAR) {
vector = new double[nvalues];
vector_total = new double[nvalues];
if (ave == WINDOW)
vector_list = memory->create_2d_double_array(nwindow,nvalues,
"ave/time:vector_list");
} else {
array = memory->create_2d_double_array(nrows,nvalues,"ave/time:array");
array_total = memory->create_2d_double_array(nrows,nvalues,
"ave/time:array_total");
if (ave == WINDOW)
array_list = memory->create_3d_double_array(nwindow,nrows,nvalues,
"ave/time:array_list");
}
// this fix produces either a global scalar or vector or array
// SCALAR mode produces either a scalar or vector
// VECTOR mode produces either a vector or array
// intensive/extensive flags set by compute,fix,variable that produces value
extlist = NULL;
if (mode == SCALAR) {
if (nvalues == 1) {
scalar_flag = 1;
if (which[0] == COMPUTE) {
Compute *compute = modify->compute[modify->find_compute(ids[0])];
if (argindex[0] == 0) extscalar = compute->extscalar;
else if (compute->extvector >= 0) extscalar = compute->extvector;
else extscalar = compute->extlist[argindex[0]-1];
} else if (which[0] == FIX) {
Fix *fix = modify->fix[modify->find_fix(ids[0])];
if (argindex[0] == 0) extscalar = fix->extscalar;
else if (fix->extvector >= 0) extscalar = fix->extvector;
else extscalar = fix->extlist[argindex[0]-1];
} else if (which[0] == VARIABLE)
extscalar = 0;
} else {
vector_flag = 1;
size_vector = nvalues;
extvector = -1;
extlist = new int[nvalues];
for (int i = 0; i < nvalues; i++) {
if (which[i] == COMPUTE) {
Compute *compute = modify->compute[modify->find_compute(ids[i])];
if (argindex[i] == 0) extlist[i] = compute->extscalar;
else if (compute->extvector >= 0) extlist[i] = compute->extvector;
else extlist[i] = compute->extlist[argindex[i]-1];
} else if (which[i] == FIX) {
Fix *fix = modify->fix[modify->find_fix(ids[i])];
if (argindex[i] == 0) extlist[i] = fix->extscalar;
else if (fix->extvector >= 0) extlist[i] = fix->extvector;
else extlist[i] = fix->extlist[argindex[i]-1];
} else if (which[i] == VARIABLE)
extlist[i] = 0;
}
}
} else {
if (nvalues == 1) {
vector_flag = 1;
size_vector = nrows;
if (which[0] == COMPUTE) {
Compute *compute = modify->compute[modify->find_compute(ids[0])];
if (argindex[0] == 0) {
extvector = compute->extvector;
if (extvector == -1) {
extlist = new int[nrows];
for (int i = 0; i < nrows; i++) extlist[i] = compute->extlist[i];
}
} else extvector = compute->extarray;
} else if (which[0] == FIX) {
Fix *fix = modify->fix[modify->find_fix(ids[0])];
if (argindex[0] == 0) {
extvector = fix->extvector;
if (extvector == -1) {
extlist = new int[nrows];
for (int i = 0; i < nrows; i++) extlist[i] = fix->extlist[i];
}
} else extvector = fix->extarray;
}
} else {
array_flag = 1;
size_local_rows = nrows;
size_local_cols = nvalues;
int value;
for (int i = 0; i < nvalues; i++) {
if (which[i] == COMPUTE) {
Compute *compute = modify->compute[modify->find_compute(ids[i])];
if (argindex[i] == 0) value = compute->extvector;
else value = compute->extarray;
} else if (which[i] == FIX) {
Fix *fix = modify->fix[modify->find_fix(ids[i])];
if (argindex[i] == 0) value = fix->extvector;
else value = fix->extarray;
}
if (value == -1)
error->all("Fix ave/time cannot set output array "
"intensive/extensive from these inputs");
if (i == 0) extarray = value;
else if (value != extarray)
error->all("Fix ave/time cannot set output array "
"intensive/extensive from these inputs");
}
}
}
// initializations
// set vector_total/array_total to zero since it accumulates
irepeat = 0;
iwindow = window_limit = 0;
norm = 0;
if (mode == SCALAR)
for (int i = 0; i < nvalues; i++) vector_total[i] = 0.0;
else
for (int i = 0; i < nrows; i++)
for (int j = 0; j < nvalues; j++) array_total[i][j] = 0.0;
// nvalid = next step on which end_of_step does something
// can be this timestep if multiple of nfreq and nrepeat = 1
// else backup from next multiple of nfreq
nvalid = (update->ntimestep/nfreq)*nfreq + nfreq;
if (nvalid-nfreq == update->ntimestep && nrepeat == 1)
nvalid = update->ntimestep;
else
nvalid -= (nrepeat-1)*nevery;
if (nvalid < update->ntimestep) nvalid += nfreq;
// add nvalid to all computes that store invocation times
// since don't know a priori which are invoked by this fix
// once in end_of_step() can set timestep for ones actually invoked
modify->addstep_compute_all(nvalid);
}
/* ---------------------------------------------------------------------- */
FixAveTime::~FixAveTime()
{
delete [] offcol;
delete [] which;
delete [] argindex;
for (int i = 0; i < nvalues; i++) delete [] ids[i];
delete [] ids;
delete [] value2index;
delete [] extlist;
if (fp && me == 0) fclose(fp);
delete [] vector;
delete [] vector_total;
delete [] column;
memory->destroy_2d_double_array(array);
memory->destroy_2d_double_array(array_total);
memory->destroy_3d_double_array(array_list);
}
/* ---------------------------------------------------------------------- */
int FixAveTime::setmask()
{
int mask = 0;
mask |= END_OF_STEP;
return mask;
}
/* ---------------------------------------------------------------------- */
void FixAveTime::init()
{
// set current indices for all computes,fixes,variables
for (int i = 0; i < nvalues; i++) {
if (which[i] == COMPUTE) {
int icompute = modify->find_compute(ids[i]);
if (icompute < 0)
error->all("Compute ID for fix ave/time does not exist");
value2index[i] = icompute;
} else if (which[i] == FIX) {
int ifix = modify->find_fix(ids[i]);
if (ifix < 0)
error->all("Fix ID for fix ave/time does not exist");
value2index[i] = ifix;
} else if (which[i] == VARIABLE) {
int ivariable = input->variable->find(ids[i]);
if (ivariable < 0)
error->all("Variable name for fix ave/time does not exist");
value2index[i] = ivariable;
}
}
}
/* ----------------------------------------------------------------------
only does something if nvalid = current timestep
------------------------------------------------------------------------- */
void FixAveTime::setup(int vflag)
{
end_of_step();
}
/* ---------------------------------------------------------------------- */
void FixAveTime::end_of_step()
{
// skip if not step which requires doing something
int ntimestep = update->ntimestep;
if (ntimestep != nvalid) return;
if (mode == SCALAR) invoke_scalar(ntimestep);
else invoke_vector(ntimestep);
}
/* ---------------------------------------------------------------------- */
void FixAveTime::invoke_scalar(int ntimestep)
{
int i,m;
double scalar;
// zero if first step
if (irepeat == 0)
for (i = 0; i < nvalues; i++) vector[i] = 0.0;
// accumulate results of computes,fixes,variables to local copy
// compute/fix/variable may invoke computes so wrap with clear/add
modify->clearstep_compute();
for (i = 0; i < nvalues; i++) {
m = value2index[i];
// invoke compute if not previously invoked
if (which[i] == COMPUTE) {
Compute *compute = modify->compute[m];
if (argindex[i] == 0) {
if (!(compute->invoked_flag & INVOKED_SCALAR)) {
compute->compute_scalar();
compute->invoked_flag |= INVOKED_SCALAR;
}
scalar = compute->scalar;
} else {
if (!(compute->invoked_flag & INVOKED_VECTOR)) {
compute->compute_vector();
compute->invoked_flag |= INVOKED_VECTOR;
}
scalar = compute->vector[argindex[i]-1];
}
// access fix fields, guaranteed to be ready
} else if (which[i] == FIX) {
if (argindex[i] == 0)
scalar = modify->fix[m]->compute_scalar();
else
scalar = modify->fix[m]->compute_vector(argindex[i]-1);
// evaluate equal-style variable
} else if (which[i] == VARIABLE)
scalar = input->variable->compute_equal(m);
// add value to vector or just set directly if offcol is set
if (offcol[i]) vector[i] = scalar;
else vector[i] += scalar;
}
// done if irepeat < nrepeat
// else reset irepeat and nvalid
irepeat++;
if (irepeat < nrepeat) {
nvalid += nevery;
modify->addstep_compute(nvalid);
return;
}
irepeat = 0;
nvalid = ntimestep + nfreq - (nrepeat-1)*nevery;
modify->addstep_compute(nvalid);
// average the final result for the Nfreq timestep
double repeat = nrepeat;
for (i = 0; i < nvalues; i++)
if (offcol[i] == 0) vector[i] /= repeat;
// if ave = ONE, only single Nfreq timestep value is needed
// if ave = RUNNING, combine with all previous Nfreq timestep values
// if ave = WINDOW, combine with nwindow most recent Nfreq timestep values
if (ntimestep >= startstep) {
if (ave == ONE) {
for (i = 0; i < nvalues; i++) vector_total[i] = vector[i];
norm = 1;
} else if (ave == RUNNING) {
for (i = 0; i < nvalues; i++) vector_total[i] += vector[i];
norm++;
} else if (ave == WINDOW) {
for (i = 0; i < nvalues; i++) {
vector_total[i] += vector[i];
if (window_limit) vector_total[i] -= vector_list[iwindow][i];
vector_list[iwindow][i] = vector[i];
}
iwindow++;
if (iwindow == nwindow) {
iwindow = 0;
window_limit = 1;
}
if (window_limit) norm = nwindow;
else norm = iwindow;
}
}
// insure any columns with offcol set are effectively set to last value
for (i = 0; i < nvalues; i++)
if (offcol[i]) vector_total[i] = norm*vector[i];
// output result to file
if (fp && me == 0) {
fprintf(fp,"%d",ntimestep);
for (i = 0; i < nvalues; i++) fprintf(fp," %g",vector_total[i]/norm);
fprintf(fp,"\n");
fflush(fp);
}
}
/* ---------------------------------------------------------------------- */
void FixAveTime::invoke_vector(int ntimestep)
{
int i,j,m;
// zero if first step
if (irepeat == 0)
for (i = 0; i < nrows; i++)
for (j = 0; j < nvalues; j++) array[i][j] = 0.0;
// accumulate results of computes,fixes,variables to local copy
// compute/fix/variable may invoke computes so wrap with clear/add
modify->clearstep_compute();
for (j = 0; j < nvalues; j++) {
m = value2index[j];
// invoke compute if not previously invoked
if (which[j] == COMPUTE) {
Compute *compute = modify->compute[m];
if (argindex[j] == 0) {
if (!(compute->invoked_flag & INVOKED_VECTOR)) {
compute->compute_vector();
compute->invoked_flag |= INVOKED_VECTOR;
}
double *cvector = compute->vector;
for (i = 0; i < nrows; i++)
column[i] = cvector[i];
} else {
if (!(compute->invoked_flag & INVOKED_ARRAY)) {
compute->compute_array();
compute->invoked_flag |= INVOKED_ARRAY;
}
double **carray = compute->array;
int icol = argindex[j]-1;
for (i = 0; i < nrows; i++)
column[i] = carray[i][icol];
}
// access fix fields, guaranteed to be ready
} else if (which[j] == FIX) {
Fix *fix = modify->fix[m];
if (argindex[j] == 0)
for (i = 0; i < nrows; i++)
column[i] = fix->compute_vector(i);
else
for (i = 0; i < nrows; i++)
column[i] = fix->compute_array(i,argindex[j]);
}
// add columns of values to array or just set directly if offcol is set
if (offcol[j]) {
for (i = 0; i < nrows; i++)
array[i][j] = column[i];
} else {
for (i = 0; i < nrows; i++)
array[i][j] += column[i];
}
}
// done if irepeat < nrepeat
// else reset irepeat and nvalid
irepeat++;
if (irepeat < nrepeat) {
nvalid += nevery;
modify->addstep_compute(nvalid);
return;
}
irepeat = 0;
nvalid = ntimestep+nfreq - (nrepeat-1)*nevery;
modify->addstep_compute(nvalid);
// average the final result for the Nfreq timestep
double repeat = nrepeat;
for (i = 0; i < nrows; i++)
for (j = 0; j < nvalues; j++)
if (offcol[j] == 0) array[i][j] /= repeat;
// if ave = ONE, only single Nfreq timestep value is needed
// if ave = RUNNING, combine with all previous Nfreq timestep values
// if ave = WINDOW, combine with nwindow most recent Nfreq timestep values
if (ntimestep >= startstep) {
if (ave == ONE) {
for (i = 0; i < nrows; i++)
for (j = 0; j < nvalues; j++) array_total[i][j] = array[i][j];
norm = 1;
} else if (ave == RUNNING) {
for (i = 0; i < nrows; i++)
for (j = 0; j < nvalues; j++) array_total[i][j] += array[i][j];
norm++;
} else if (ave == WINDOW) {
for (i = 0; i < nrows; i++)
for (j = 0; j < nvalues; j++) {
array_total[i][j] += array[i][j];
if (window_limit) array_total[i][j] -= array_list[iwindow][i][j];
array_list[iwindow][i][j] = array[i][j];
}
iwindow++;
if (iwindow == nwindow) {
iwindow = 0;
window_limit = 1;
}
if (window_limit) norm = nwindow;
else norm = iwindow;
}
}
// insure any columns with offcol set are effectively set to last value
for (i = 0; i < nrows; i++)
for (j = 0; j < nvalues; j++)
if (offcol[j]) array_total[i][j] = norm*array[i][j];
// output result to file
if (fp && me == 0) {
fprintf(fp,"%d %d\n",ntimestep,nrows);
for (i = 0; i < nrows; i++) {
fprintf(fp,"%d",i+1);
for (j = 0; j < nvalues; j++) fprintf(fp," %g",array_total[i][j]/norm);
fprintf(fp,"\n");
}
fflush(fp);
}
}
/* ----------------------------------------------------------------------
return scalar value
------------------------------------------------------------------------- */
double FixAveTime::compute_scalar()
{
if (norm) return vector_total[0]/norm;
return 0.0;
}
/* ----------------------------------------------------------------------
return Ith vector value
------------------------------------------------------------------------- */
double FixAveTime::compute_vector(int i)
{
if (norm) {
if (mode == SCALAR) return vector_total[i]/norm;
if (mode == VECTOR) return array_total[i][0];
}
return 0.0;
}
/* ----------------------------------------------------------------------
return I,J array value
------------------------------------------------------------------------- */
double FixAveTime::compute_array(int i, int j)
{
if (norm) return array_total[i][j]/norm;
return 0.0;
}
/* ----------------------------------------------------------------------
parse optional args
------------------------------------------------------------------------- */
void FixAveTime::options(int narg, char **arg)
{
// option defaults
fp = NULL;
ave = ONE;
startstep = 0;
mode = SCALAR;
offcol = new int[nvalues];
for (int i = 0; i < nvalues; i++) offcol[i] = 0;
title1 = NULL;
title2 = NULL;
title3 = NULL;
// optional args
int iarg = 6 + nvalues;
while (iarg < narg) {
if (strcmp(arg[iarg],"file") == 0) {
if (iarg+2 > narg) error->all("Illegal fix ave/time command");
if (me == 0) {
fp = fopen(arg[iarg+1],"w");
if (fp == NULL) {
char str[128];
sprintf(str,"Cannot open fix ave/time file %s",arg[iarg+1]);
error->one(str);
}
}
iarg += 2;
} else if (strcmp(arg[iarg],"ave") == 0) {
if (iarg+2 > narg) error->all("Illegal fix ave/time command");
if (strcmp(arg[iarg+1],"one") == 0) ave = ONE;
else if (strcmp(arg[iarg+1],"running") == 0) ave = RUNNING;
else if (strcmp(arg[iarg+1],"window") == 0) ave = WINDOW;
else error->all("Illegal fix ave/time command");
if (ave == WINDOW) {
if (iarg+3 > narg) error->all("Illegal fix ave/time command");
nwindow = atoi(arg[iarg+2]);
if (nwindow <= 0) error->all("Illegal fix ave/time command");
}
iarg += 2;
if (ave == WINDOW) iarg++;
} else if (strcmp(arg[iarg],"start") == 0) {
if (iarg+2 > narg) error->all("Illegal fix ave/time command");
startstep = atoi(arg[iarg+1]);
iarg += 2;
} else if (strcmp(arg[iarg],"mode") == 0) {
if (iarg+2 > narg) error->all("Illegal fix ave/time command");
if (strcmp(arg[iarg+1],"scalar") == 0) mode = SCALAR;
else if (strcmp(arg[iarg+1],"vector") == 0) mode = VECTOR;
else error->all("Illegal fix ave/time command");
iarg += 2;
} else if (strcmp(arg[iarg],"off") == 0) {
if (iarg+2 > narg) error->all("Illegal fix ave/time command");
int ncolumn = atoi(arg[iarg+1]);
if (ncolumn <= 0 || ncolumn > nvalues)
error->all("Invalid fix ave/time off column");
offcol[ncolumn-1] = 1;
iarg += 2;
} else if (strcmp(arg[iarg],"title1") == 0) {
if (iarg+2 > narg) error->all("Illegal fix ave/spatial command");
delete [] title1;
int n = strlen(arg[iarg+1]) + 1;
title1 = new char[n];
strcpy(title1,arg[iarg+1]);
iarg += 2;
} else if (strcmp(arg[iarg],"title2") == 0) {
if (iarg+2 > narg) error->all("Illegal fix ave/spatial command");
delete [] title2;
int n = strlen(arg[iarg+1]) + 1;
title2 = new char[n];
strcpy(title2,arg[iarg+1]);
iarg += 2;
} else if (strcmp(arg[iarg],"title3") == 0) {
if (iarg+2 > narg) error->all("Illegal fix ave/spatial command");
delete [] title3;
int n = strlen(arg[iarg+1]) + 1;
title3 = new char[n];
strcpy(title3,arg[iarg+1]);
iarg += 2;
} else error->all("Illegal fix ave/time command");
}
}

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