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planes.c
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planes.c
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/************************************************************************
* *
* Program package 'som_pak': *
* *
* planes.c *
* -convert the map planes into postscript format for printing *
* *
* Version 3.0 *
* Date: 1 Mar 1995 *
* *
* NOTE: This program package is copyrighted in the sense that it *
* may be used for scientific purposes. The package as a whole, or *
* parts thereof, cannot be included or used in any commercial *
* application without written permission granted by its producents. *
* No programs contained in this package may be copied for commercial *
* distribution. *
* *
* All comments concerning this program package may be sent to the *
* e-mail address 'lvq@cochlea.hut.fi'. *
* *
************************************************************************/
#include <stdio.h>
#include <float.h>
#include <string.h>
#include <math.h>
#include "lvq_pak.h"
#include "datafile.h"
#include "labels.h"
#include "som_rout.h"
#define XMSTEP 40
#define YMSTEP ((int) ((int) XSTEP * 0.87))
struct traj_point {
long index;
struct traj_point *next;
};
struct teach_params params;
int plane;
char *mapname, *base_name;
int traj_ready = 0;
int *dens;
struct traj_point traj_root;
int ps = 0;
int XSTEP, YSTEP;
static char *usage[] = {
"planes - produce EPS images of self-organizing maps\n",
"Required parameters:\n",
" -cin filename codebook file\n",
"Optional parameters:\n",
" -din filename input data\n",
" -plane integer map reference vector component to be used (0=all)\n",
" -ps integer produce PS-code (instead of EPS)\n",
" -buffer integer buffered reading of data, integer lines at a time\n",
" -selfuncs name select a set of functions\n",
NULL};
/* ps_string_filter: escape ps special characters in string. Returns a
pointer to a static buffer containing the escaped string. */
char *ps_string_filter(char *text)
{
static char ps_string[1024]; /* This should be enough for most purposes */
char *s = ps_string, c;
if (text)
while ((c = *text++))
{
switch (c)
{
case '(':
case ')':
case '\\':
*s++ = '\\';
break;
default:
break;
}
*s++ = c;
}
*s++ = 0;
return ps_string;
}
void print_plane(int plane)
{
float cv;
int xp, yp;
long index, offset = 0;
int label;
float maxval, minval;
struct teach_params *teach = ¶ms;
struct entries *codes = teach->codes;
struct data_entry *codetmp;
FILE *fp;
char str[100];
int xsize, ysize;
eptr p;
if (ps)
sprintf(str, "%s_p%d.ps", base_name, plane+1);
else
sprintf(str, "%s_p%d.eps", base_name, plane+1);
fp = fopen(str, "w");
if (codes->topol == topol_type("hexa"))
offset = XSTEP/2;
xsize = XSTEP * codes->xdim + offset;
ysize = YSTEP * codes->ydim;
if (ps) {
/* print ps header */
fprintf(fp, "%%!PS-Adobe-2.0 EPSF-2.0\n");
fprintf(fp, "%%%%Title: %s\n%%%%Creator: planes\n", "undefined");
fprintf(fp, "%%%%Pages: 1\n%%%%EndComments\n");
fprintf(fp, "550 40 translate\n");
fprintf(fp, "90 rotate\n");
fprintf(fp, "760 %d div 510 %d div lt\n", xsize, ysize);
fprintf(fp, " {760 %d 0 sub div} {510 %d div} ifelse\n", xsize, ysize);
fprintf(fp, "/gscale exch def\n");
fprintf(fp, "gscale dup scale\n");
}
else {
/* print eps header */
fprintf(fp, "%%!PS-Adobe-2.0 EPSF-2.0\n");
fprintf(fp, "%%%%Title: %s\n%%%%Creator: planes\n", "undefined");
fprintf(fp, "%%%%BoundingBox: 0 0 %d %d\n", xsize, ysize);
fprintf(fp, "%%%%Pages: 0\n%%%%EndComments\n");
}
/* print header */
fprintf(fp, "/fontsize %d def\n", (int) (XSTEP/3));
fprintf(fp, "0 %d translate\n", ysize);
fprintf(fp, "1 -1 scale\n");
/* Find the lower and upper limits for gray level scaling */
minval = FLT_MAX;
maxval = -FLT_MAX;
codetmp = rewind_entries(codes, &p);
while (codetmp != NULL) {
if (maxval < codetmp->points[plane])
maxval = codetmp->points[plane];
if (minval > codetmp->points[plane])
minval = codetmp->points[plane];
codetmp = next_entry(&p);
}
/* initialize gray circles */
fprintf(fp, "/radius %d def\n", (int) (XSTEP/2.2));
fprintf(fp, "/LN\n");
fprintf(fp, "{ setgray\n");
fprintf(fp, "newpath\n");
fprintf(fp, "radius 0 360 arc fill\n");
fprintf(fp, "} def\n");
/* Print the gray level values */
index = 0;
codetmp = rewind_entries(codes, &p);
while (codetmp != NULL) {
/* Compute the gray level of next unit */
if ((maxval - minval) != 0.0)
cv = 0.05 + 0.9 * (codetmp->points[plane] - minval) /
(maxval - minval);
else
cv = 0.5;
xp = XSTEP * (index % codes->xdim) + XSTEP/2;
yp = YSTEP * (index / codes->xdim) + YSTEP/2;
if ((index / codes->xdim) % 2) xp += offset;
/* Print the value */
fprintf(fp, "%d %d %f LN\n", xp, yp, cv);
codetmp = next_entry(&p);
index++;
}
/* initialize label printing */
fprintf(fp, "0 setgray\n");
fprintf(fp, "/Helvetica findfont fontsize scalefont setfont\n");
fprintf(fp, "/LP\n");
fprintf(fp, "{ \n");
fprintf(fp, "1 -1 scale dup stringwidth pop\n");
fprintf(fp, "-2 div 0 rmoveto show\n");
fprintf(fp, "1 -1 scale } def\n");
/* Print the labels */
index = 0;
codetmp = rewind_entries(codes, &p);
while (codetmp != NULL) {
/* If there is label, then print it */
xp = XSTEP * (index % codes->xdim) + XSTEP/2;
yp = YSTEP * (index / codes->xdim) + YSTEP/2;
if ((index / codes->xdim) % 2) xp += offset;
if ((label = get_entry_label(codetmp)) != LABEL_EMPTY)
fprintf(fp, "%d %d moveto (%s) LP\n", xp, yp, ps_string_filter(find_conv_to_lab(label)));
codetmp = next_entry(&p);
index++;
}
if (ps) {
fprintf(fp, "showpage\n");
}
fclose(fp);
}
void scan_data_traj(struct entries *codes, struct entries *data)
{
struct teach_params *teach = ¶ms;
WINNER_FUNCTION *find_winner = teach->winner;
int i;
struct data_entry *datatmp;
struct traj_point *traj_po;
struct winner_info winner;
eptr p;
dens = (int *) malloc(sizeof(int) * codes->xdim * codes->ydim);
for (i = 0; i < codes->xdim * codes->ydim; i++)
dens[i] = 0;
traj_root.next = NULL;
traj_root.index = 0;
traj_po = &traj_root;
datatmp = rewind_entries(data, &p);
/* Scan all input entries */
while (datatmp != NULL) {
/* check if the vector is empty */
if (find_winner(codes, datatmp, &winner, 1) == 0) {
traj_po->next =
(struct traj_point *) malloc(sizeof(struct traj_point) * 1);
traj_po = traj_po->next;
traj_po->next = NULL;
/* save the winner index */
traj_po->index = -1;
}
else {
traj_po->next =
(struct traj_point *) malloc(sizeof(struct traj_point) * 1);
traj_po = traj_po->next;
traj_po->next = NULL;
/* save the winner index */
traj_po->index = winner.index;
/* Increment the winner */
dens[winner.index]++;
}
/* Take the next input entry */
datatmp = next_entry(&p);;
}
traj_ready = 1;
}
void print_trajectory()
{
int i, j;
int offset = 0;
struct teach_params *teach = ¶ms;
struct entries *data = teach->data;
struct entries *codes = teach->codes;
FILE *fp;
char str[100];
int xsize, ysize;
if (ps)
sprintf(str, "%s_tr.ps", base_name);
else
sprintf(str, "%s_tr.eps", base_name);
fp = fopen(str, "w");
if (codes->topol == TOPOL_HEXA)
offset = XSTEP/2;
xsize = XSTEP * codes->xdim + offset;
ysize = YSTEP * codes->ydim;
if (ps) {
/* print ps header */
fprintf(fp, "%%!PS-Adobe-2.0 EPSF-2.0\n");
fprintf(fp, "%%%%Title: %s\n%%%%Creator: planes\n", "undefined");
fprintf(fp, "%%%%Pages: 1\n%%%%EndComments\n");
fprintf(fp, "550 40 translate\n");
fprintf(fp, "90 rotate\n");
fprintf(fp, "760 %d div 510 %d div lt\n", xsize, ysize);
fprintf(fp, " {760 %d 0 sub div} {510 %d div} ifelse\n", xsize, ysize);
fprintf(fp, "/gscale exch def\n");
fprintf(fp, "gscale dup scale\n");
}
else {
/* print eps header */
fprintf(fp, "%%!PS-Adobe-2.0 EPSF-2.0\n");
fprintf(fp, "%%%%Title: %s\n%%%%Creator: planes\n", "undefined");
fprintf(fp, "%%%%BoundingBox: 0 0 %d %d\n", xsize, ysize);
fprintf(fp, "%%%%Pages: 0\n%%%%EndComments\n");
}
/* print header */
fprintf(fp, "0 %d translate\n", ysize);
fprintf(fp, "1 -1 scale\n");
/* draw empty circles */
fprintf(fp, "1 setlinewidth\n");
fprintf(fp, "0.8 setgray\n");
fprintf(fp, "/radius %d def\n", (int) (XSTEP/2.2));
fprintf(fp, "/LN\n");
fprintf(fp, "{ newpath\n");
fprintf(fp, "radius 0 360 arc\n");
fprintf(fp, "stroke } def\n");
for (i = 0; i < codes->xdim; i++)
for (j = 0; j < codes->ydim; j++) {
fprintf(fp, "%d %d LN\n",
((int) i * XSTEP + XSTEP/2 + ((j % 2) ? offset : 0)),
((int) j * (int) YSTEP + YSTEP/2));
}
/* Set linetype for trajectory */
fprintf(fp, "%d setlinewidth\n", XSTEP/10);
fprintf(fp, "1 setlinejoin\n");
fprintf(fp, "1 setlinecap\n");
fprintf(fp, "0 setgray\n");
/* If data values are present, print trajectory */
if (data != NULL) {
int cul[2];
int bpos;
int first = 1;
struct traj_point *traj_po;
if (traj_ready == 0)
scan_data_traj(codes,data);
traj_po = traj_root.next;
/* Scan all input entries */
while (traj_po != NULL) {
bpos = traj_po->index;
if (bpos == -1) {
if (!first) {
fprintf(fp, "stroke\n");
}
first = 1;
/* Take the next input entry */
traj_po = traj_po->next;
/* Skip until next real data point */
continue;
}
/* Draw the trajectory */
if (first) {
first = 0;
cul[0] = XSTEP * (bpos % codes->xdim) + XSTEP/2;
cul[1] = YSTEP * (bpos / codes->xdim) + YSTEP/2;
if (((bpos / codes->xdim) % 2)) cul[0] += offset;
/* print the initialization */
fprintf(fp, "newpath\n");
fprintf(fp, "%d %d moveto\n", cul[0], cul[1]);
}
else {
cul[0] = XSTEP * (bpos % codes->xdim) + XSTEP/2;
cul[1] = YSTEP * (bpos / codes->xdim) + YSTEP/2;
if (((bpos / codes->xdim) % 2)) cul[0] += offset;
/* Print one segment of trajectory */
fprintf(fp, "%d %d lineto\n", cul[0], cul[1]);
}
/* Take the next input entry */
traj_po = traj_po->next;
}
fprintf(fp, "stroke\n");
}
if (ps) {
fprintf(fp, "showpage\n");
}
fclose(fp);
}
void print_all_planes()
{
int i;
struct teach_params *teach = ¶ms;
struct entries *codes = teach->codes;
for (i = 0; i < codes->dimension; i++)
print_plane(i);
}
int main(int argc, char **argv)
{
int error;
long buffer;
char *in_code_file;
char *in_data_file = NULL;
struct entries *codes = NULL;
struct entries *data = NULL;
int offset = 0;
char *funcname = NULL;
error = 0;
global_options(argc, argv);
if (extract_parameter(argc, argv, "-help", OPTION2))
{
printhelp();
exit(0);
}
in_code_file = extract_parameter(argc, argv, IN_CODE_FILE, ALWAYS);
in_data_file = extract_parameter(argc, argv, IN_DATA_FILE, OPTION);
plane = (int) oatoi(extract_parameter(argc, argv, PLANE, OPTION), 1);
buffer = oatoi(extract_parameter(argc, argv, "-buffer", OPTION), 0);
ps = oatoi(extract_parameter(argc, argv, "-ps", OPTION), 0);
funcname = extract_parameter(argc, argv, "-selfuncs", OPTION);
mapname = in_code_file;
{
char *p;
base_name = ostrdup(mapname);
p = strrchr(base_name, '.');
if (p != NULL)
*p = '\0';
}
label_not_needed(1);
ifverbose(2)
fprintf(stdout, "Codebook entries are read from file %s\n", in_code_file);
codes = open_entries(in_code_file);
if (codes == NULL)
{
fprintf(stderr, "cant open code file '%s'\n", in_code_file);
error = 1;
goto cleanup;
}
if (codes->topol < TOPOL_HEXA) {
printf("File %s is not a map file\n", in_code_file);
error = 1;
goto cleanup;
}
if (in_data_file != NULL) {
ifverbose(2)
fprintf(stdout, "Data entries are read from file %s\n", in_data_file);
if ((data = open_entries(in_data_file)) == NULL)
{
fprintf(stderr, "cant open data file '%s'\n", in_data_file);
error = 1;
goto cleanup;
}
if (data->dimension > codes->dimension) {
fprintf(stderr, "Dimensions in data and codebook files are different");
error = 1;
goto cleanup;
}
data->flags.skip_empty = 0;
}
if (plane > codes->dimension) {
fprintf(stderr, "Required plane is bigger than codebook vector dimension");
error = 1;
goto cleanup;
}
set_teach_params(¶ms, codes, data, buffer, funcname);
set_som_params(¶ms);
XSTEP = XMSTEP;
YSTEP = XMSTEP;
if (codes->topol == topol_type("hexa")) {
offset = XSTEP/2;
YSTEP = YMSTEP;
}
/* indexing the tables by plane-1 */
plane--;
if (plane == -1)
print_all_planes();
else
print_plane(plane);
if (data != NULL)
print_trajectory();
cleanup:
if (codes)
close_entries(codes);
if (data)
close_entries(data);
return(error);
}