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// #define DEBUG_STORAGE
#include <string>
#include <stdlib.h>
#include <stddef.h>
#include "gr.hh"
#include "extern.hh"
bool delete_columnsCmd(void);
static void delete_all_columns(void);
static bool delete_columns_randomly(void);
bool delete_columns_where_missing(void);
bool delete_gridCmd(void);
extern char _grTempString[];
// `delete .variable.'
// `delete \synonym'
// `delete columns [randomly .fraction.]'
// `delete grid'
// `delete x|y scale'
bool
deleteCmd()
{
if (_nword == 1) {
/* Missing item */
err("`delete' what?");
return false;
} else if (is_var(_word[1]) || is_syn(_word[1])) {
/* Deleting variable/synonym (s) */
int i;
for (i = 1; i < _nword; i++) {
if (is_var(_word[i])) {
if (!delete_var(_word[i])) {
warning("`delete' can't delete non-existent variable `\\",
_word[i], "'", "\\");
return false;
}
} else if (is_syn(_word[i])) {
if (!delete_syn(_word[i])) {
warning("`delete' can't delete non-existent synonym `\\",
_word[i], "'", "\\");
return false;
}
}
}
return true;
} else if (word_is(1, "columns")) {
return delete_columnsCmd();
} else if (word_is(1, "grid")) {
/* Delete the grid */
if (_nword == 2) {
delete_gridCmd();
return true;
} else {
demonstrate_command_usage();
err("Extra words in command.");
return false;
}
} else if (word_is(1, "scale")) {
/* Delete both the x and y scales */
_yincreasing = true;
_xscale_exists = false;
_need_x_axis = true;
_yscale_exists = false;
_need_y_axis = true;
_user_set_x_axis = false;
_user_set_y_axis = false;
gr_setxtransform(gr_axis_LINEAR);
gr_setxlabel("x");
gr_setytransform(gr_axis_LINEAR);
gr_setylabel("y");
return true;
} else if (word_is(1, "x")) {
/* Delete the x scale */
if (word_is(2, "scale") && _nword == 3) {
_xscale_exists = false;
_need_x_axis = true;
_user_set_x_axis = false;
gr_setxtransform(gr_axis_LINEAR);
gr_setxlabel("x");
return true;
} else {
demonstrate_command_usage();
err("`delete x' what?");
return false;
}
} else if (word_is(1, "y")) {
/* Delete the y scale */
if (word_is(2, "scale") && _nword == 3) {
_yscale_exists = false;
_need_y_axis = true;
_yincreasing = true;
_user_set_y_axis = false;
gr_setytransform(gr_axis_LINEAR);
gr_setylabel("y");
return true;
} else {
demonstrate_command_usage();
err("`delete y' what?");
return false;
}
} else {
demonstrate_command_usage();
err("`delete' what?");
return false;
}
}
// `delete columns [{randomly .fraction.}|{where missing}]'
bool
delete_columnsCmd()
{
switch(_nword) {
case 2:
// `delete columns'
delete_all_columns();
return true;
case 4:
// `delete columns randomly .fraction.'
if (word_is(2, "randomly")) {
return delete_columns_randomly();
} else if (word_is(2, "where") || word_is(3, "missing")) {
return delete_columns_where_missing();
} else {
demonstrate_command_usage();
err("Syntax must be `randomly .f.' or `where missing'");
return false;
}
default:
demonstrate_command_usage();
NUMBER_WORDS_ERROR;
return false;
}
}
static void
delete_all_columns()
{
_colX.setDepth(0);
_colX.compact();
_colY.setDepth(0);
_colY.compact();
_colZ.setDepth(0);
_colZ.compact();
_colU.setDepth(0);
_colU.compact();
_colV.setDepth(0);
_colV.compact();
_colR.setDepth(0);
_colR.compact();
_colTHETA.setDepth(0);
_colTHETA.compact();
}
static bool
delete_columns_randomly()
{
double fraction;
if (!getdnum(_word[3], &fraction)) {
READ_WORD_ERROR(".fraction.");
return false;
}
if (fraction < 0.0) {
warning("`delete columns randomly' clipping .fraction. to 0 (did no deletions)");
return true; // do nothing
}
if (fraction > 1.0) {
warning("`delete columns randomly' clipping .fraction. to 1");
delete_all_columns();
return true;
}
unsigned int length = _colX.size();
double miss = gr_currentmissingvalue();
int good = 0;
vector<int> ok((size_t)length, 0);
unsigned int i;
for (i = 0; i < length; i++) {
ok[i] = (char)0;
if (_colX.size() > 0 && (_colX[i] == miss))
continue;
if (_colY.size() > 0 && (_colY[i] == miss))
continue;
if (_colZ.size() > 0 && (_colZ[i] == miss))
continue;
if (_colU.size() > 0 && (_colU[i] == miss))
continue;
if (_colV.size() > 0 && (_colV[i] == miss))
continue;
if (_colR.size() > 0 && (_colR[i] == miss))
continue;
if (_colTHETA.size() > 0 && (_colTHETA[i] == miss))
continue;
ok[i] = (char)1;
good++;
}
// Create vector of whether to kill a given index
vector<int> kill((size_t)length, 0);
// Laborously get correct number of data to discard. Originally
// I just tried to remove the given number, but that adds
// an extra element of randomness.
unsigned int subset = (unsigned int)(floor(good * fraction + 0.5));
unsigned int collisions = 0;
#if defined(HAVE_DRAND48)
srand48(getpid());
#else
srand(getpid());
#endif
for (i = 0; i < subset; i++) {
#if defined(HAVE_DRAND48) // range is 0 to 1, but do modulus in case
int index = int(drand48() * length) % length;
#else
int index = int(rand() % length);
#endif
if (ok[index]) {
if (kill[index]) {
if (collisions++ > length) {
sprintf(_grTempString, "`delete columns randomly' could only delete %d columns\n", i);
warning(_grTempString);
break;
}
i--;
} else {
kill[index] = 1;
}
} else {
i--;
}
}
for (i = 0; i < length; i++) {
if (kill[i]) {
if (_colX.size())
_colX[i] = miss;
if (_colY.size())
_colY[i] = miss;
if (_colZ.size())
_colZ[i] = miss;
if (_colU.size())
_colU[i] = miss;
if (_colV.size())
_colV[i] = miss;
if (_colR.size())
_colR[i] = miss;
if (_colTHETA.size())
_colTHETA[i] = miss;
}
}
return true;
}
bool
delete_columns_where_missing()
{
int haveX, haveY, haveZ, haveU, haveV, haveR, haveTHETA;
haveX = haveY = haveZ = haveU = haveV = haveR = haveTHETA = 0;
unsigned int length = _colX.size();
unsigned int i;
for (i = 0; i < length; i++) {
if (_colX.size()) haveX = 1;
if (_colY.size()) haveY = 1;
if (_colZ.size()) haveZ = 1;
if (_colU.size()) haveU = 1;
if (_colV.size()) haveV = 1;
if (_colR.size()) haveR = 1;
if (_colTHETA.size()) haveTHETA = 1;
}
double *xP = _colX.begin();
double *yP = _colY.begin();
double *zP = _colZ.begin();
double *uP = _colU.begin();
double *vP = _colV.begin();
double *rP = _colR.begin();
double *thetaP = _colTHETA.begin();
vector<int> kill((size_t)length, 0);
int num_to_kill = 0;
for (i = 0; i < length; i++) {
if (haveX && gr_missing(xP[i])) {
kill[i] = 1; num_to_kill++; continue;
}
if (haveY && gr_missing(yP[i])) {
kill[i] = 1; num_to_kill++; continue;
}
if (haveZ && gr_missing(zP[i])) {
kill[i] = 1; num_to_kill++; continue;
}
if (haveU && gr_missing(uP[i])) {
kill[i] = 1; num_to_kill++; continue;
}
if (haveV && gr_missing(vP[i])) {
kill[i] = 1; num_to_kill++; continue;
}
if (haveR && gr_missing(rP[i])) {
kill[i] = 1; num_to_kill++; continue;
}
if (haveTHETA && gr_missing(thetaP[i])) {
kill[i] = 1; num_to_kill++; continue;
}
}
if (!num_to_kill) {
return true;
}
for (i = length - 1; i != 0; i--) {
if (kill[i]) {
if (haveX) _colX.erase(_colX.begin() + i);
if (haveY) _colY.erase(_colY.begin() + i);
if (haveZ) _colZ.erase(_colZ.begin() + i);
if (haveU) _colU.erase(_colU.begin() + i);
if (haveV) _colV.erase(_colV.begin() + i);
if (haveR) _colR.erase(_colR.begin() + i);
if (haveTHETA) _colTHETA.erase(_colTHETA.begin() + i);
}
}
PUT_VAR("..num_col_data..", double(_colX.size()));
PUT_VAR("..num_col_data_missing..", 0);
length -= num_to_kill;
return true;
}
bool
delete_gridCmd()
{
Require(_nword == 2, err("Must have `delete grid'"));
if (!strcmp(_word[1], "grid")) {
_f_xy.set_size(0, 0);
_legit_xy.set_size(0, 0);
if (_grid_exists == true) {
_f_min = _f_max = gr_currentmissingvalue();
_grid_exists = false;
}
if (_xgrid_exists == true) {
#if defined(DEBUG_STORAGE)
printf("delete clearing _xmatrix=%x\n", _xmatrix);
#endif
delete [] _xmatrix;
_num_xmatrix_data = 0;
_xgrid_exists = false;
}
if (_ygrid_exists == true) {
#if defined(DEBUG_STORAGE)
printf("delete clearing _ymatrix=%x\n", _ymatrix);
#endif
delete [] _ymatrix;
_num_ymatrix_data = 0;
_ygrid_exists = false;
}
} else {
err("Must have `delete grid'");
return false;
}
return true;
}
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