1 /* 2 * ---------------------------------------------------------------------------- 3 * "THE BEER-WARE LICENSE" (Revision 42): 4 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you 5 * can do whatever you want with this stuff. If we meet some day, and you think 6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 7 * ---------------------------------------------------------------------------- 8 * 9 */ 10 11 #include <sys/cdefs.h> 12 __FBSDID("$FreeBSD$"); 13 14 #include <stdio.h> 15 #include <math.h> 16 #include <err.h> 17 #include <string.h> 18 #include <stdlib.h> 19 #include <unistd.h> 20 #include <sys/ioctl.h> 21 #include <sys/queue.h> 22 #include <sys/ttycom.h> 23 24 #define NSTUDENT 100 25 #define NCONF 6 26 double const studentpct[] = { 80, 90, 95, 98, 99, 99.5 }; 27 double student [NSTUDENT + 1][NCONF] = { 28 /* inf */ { 1.282, 1.645, 1.960, 2.326, 2.576, 3.090 }, 29 /* 1. */ { 3.078, 6.314, 12.706, 31.821, 63.657, 318.313 }, 30 /* 2. */ { 1.886, 2.920, 4.303, 6.965, 9.925, 22.327 }, 31 /* 3. */ { 1.638, 2.353, 3.182, 4.541, 5.841, 10.215 }, 32 /* 4. */ { 1.533, 2.132, 2.776, 3.747, 4.604, 7.173 }, 33 /* 5. */ { 1.476, 2.015, 2.571, 3.365, 4.032, 5.893 }, 34 /* 6. */ { 1.440, 1.943, 2.447, 3.143, 3.707, 5.208 }, 35 /* 7. */ { 1.415, 1.895, 2.365, 2.998, 3.499, 4.782 }, 36 /* 8. */ { 1.397, 1.860, 2.306, 2.896, 3.355, 4.499 }, 37 /* 9. */ { 1.383, 1.833, 2.262, 2.821, 3.250, 4.296 }, 38 /* 10. */ { 1.372, 1.812, 2.228, 2.764, 3.169, 4.143 }, 39 /* 11. */ { 1.363, 1.796, 2.201, 2.718, 3.106, 4.024 }, 40 /* 12. */ { 1.356, 1.782, 2.179, 2.681, 3.055, 3.929 }, 41 /* 13. */ { 1.350, 1.771, 2.160, 2.650, 3.012, 3.852 }, 42 /* 14. */ { 1.345, 1.761, 2.145, 2.624, 2.977, 3.787 }, 43 /* 15. */ { 1.341, 1.753, 2.131, 2.602, 2.947, 3.733 }, 44 /* 16. */ { 1.337, 1.746, 2.120, 2.583, 2.921, 3.686 }, 45 /* 17. */ { 1.333, 1.740, 2.110, 2.567, 2.898, 3.646 }, 46 /* 18. */ { 1.330, 1.734, 2.101, 2.552, 2.878, 3.610 }, 47 /* 19. */ { 1.328, 1.729, 2.093, 2.539, 2.861, 3.579 }, 48 /* 20. */ { 1.325, 1.725, 2.086, 2.528, 2.845, 3.552 }, 49 /* 21. */ { 1.323, 1.721, 2.080, 2.518, 2.831, 3.527 }, 50 /* 22. */ { 1.321, 1.717, 2.074, 2.508, 2.819, 3.505 }, 51 /* 23. */ { 1.319, 1.714, 2.069, 2.500, 2.807, 3.485 }, 52 /* 24. */ { 1.318, 1.711, 2.064, 2.492, 2.797, 3.467 }, 53 /* 25. */ { 1.316, 1.708, 2.060, 2.485, 2.787, 3.450 }, 54 /* 26. */ { 1.315, 1.706, 2.056, 2.479, 2.779, 3.435 }, 55 /* 27. */ { 1.314, 1.703, 2.052, 2.473, 2.771, 3.421 }, 56 /* 28. */ { 1.313, 1.701, 2.048, 2.467, 2.763, 3.408 }, 57 /* 29. */ { 1.311, 1.699, 2.045, 2.462, 2.756, 3.396 }, 58 /* 30. */ { 1.310, 1.697, 2.042, 2.457, 2.750, 3.385 }, 59 /* 31. */ { 1.309, 1.696, 2.040, 2.453, 2.744, 3.375 }, 60 /* 32. */ { 1.309, 1.694, 2.037, 2.449, 2.738, 3.365 }, 61 /* 33. */ { 1.308, 1.692, 2.035, 2.445, 2.733, 3.356 }, 62 /* 34. */ { 1.307, 1.691, 2.032, 2.441, 2.728, 3.348 }, 63 /* 35. */ { 1.306, 1.690, 2.030, 2.438, 2.724, 3.340 }, 64 /* 36. */ { 1.306, 1.688, 2.028, 2.434, 2.719, 3.333 }, 65 /* 37. */ { 1.305, 1.687, 2.026, 2.431, 2.715, 3.326 }, 66 /* 38. */ { 1.304, 1.686, 2.024, 2.429, 2.712, 3.319 }, 67 /* 39. */ { 1.304, 1.685, 2.023, 2.426, 2.708, 3.313 }, 68 /* 40. */ { 1.303, 1.684, 2.021, 2.423, 2.704, 3.307 }, 69 /* 41. */ { 1.303, 1.683, 2.020, 2.421, 2.701, 3.301 }, 70 /* 42. */ { 1.302, 1.682, 2.018, 2.418, 2.698, 3.296 }, 71 /* 43. */ { 1.302, 1.681, 2.017, 2.416, 2.695, 3.291 }, 72 /* 44. */ { 1.301, 1.680, 2.015, 2.414, 2.692, 3.286 }, 73 /* 45. */ { 1.301, 1.679, 2.014, 2.412, 2.690, 3.281 }, 74 /* 46. */ { 1.300, 1.679, 2.013, 2.410, 2.687, 3.277 }, 75 /* 47. */ { 1.300, 1.678, 2.012, 2.408, 2.685, 3.273 }, 76 /* 48. */ { 1.299, 1.677, 2.011, 2.407, 2.682, 3.269 }, 77 /* 49. */ { 1.299, 1.677, 2.010, 2.405, 2.680, 3.265 }, 78 /* 50. */ { 1.299, 1.676, 2.009, 2.403, 2.678, 3.261 }, 79 /* 51. */ { 1.298, 1.675, 2.008, 2.402, 2.676, 3.258 }, 80 /* 52. */ { 1.298, 1.675, 2.007, 2.400, 2.674, 3.255 }, 81 /* 53. */ { 1.298, 1.674, 2.006, 2.399, 2.672, 3.251 }, 82 /* 54. */ { 1.297, 1.674, 2.005, 2.397, 2.670, 3.248 }, 83 /* 55. */ { 1.297, 1.673, 2.004, 2.396, 2.668, 3.245 }, 84 /* 56. */ { 1.297, 1.673, 2.003, 2.395, 2.667, 3.242 }, 85 /* 57. */ { 1.297, 1.672, 2.002, 2.394, 2.665, 3.239 }, 86 /* 58. */ { 1.296, 1.672, 2.002, 2.392, 2.663, 3.237 }, 87 /* 59. */ { 1.296, 1.671, 2.001, 2.391, 2.662, 3.234 }, 88 /* 60. */ { 1.296, 1.671, 2.000, 2.390, 2.660, 3.232 }, 89 /* 61. */ { 1.296, 1.670, 2.000, 2.389, 2.659, 3.229 }, 90 /* 62. */ { 1.295, 1.670, 1.999, 2.388, 2.657, 3.227 }, 91 /* 63. */ { 1.295, 1.669, 1.998, 2.387, 2.656, 3.225 }, 92 /* 64. */ { 1.295, 1.669, 1.998, 2.386, 2.655, 3.223 }, 93 /* 65. */ { 1.295, 1.669, 1.997, 2.385, 2.654, 3.220 }, 94 /* 66. */ { 1.295, 1.668, 1.997, 2.384, 2.652, 3.218 }, 95 /* 67. */ { 1.294, 1.668, 1.996, 2.383, 2.651, 3.216 }, 96 /* 68. */ { 1.294, 1.668, 1.995, 2.382, 2.650, 3.214 }, 97 /* 69. */ { 1.294, 1.667, 1.995, 2.382, 2.649, 3.213 }, 98 /* 70. */ { 1.294, 1.667, 1.994, 2.381, 2.648, 3.211 }, 99 /* 71. */ { 1.294, 1.667, 1.994, 2.380, 2.647, 3.209 }, 100 /* 72. */ { 1.293, 1.666, 1.993, 2.379, 2.646, 3.207 }, 101 /* 73. */ { 1.293, 1.666, 1.993, 2.379, 2.645, 3.206 }, 102 /* 74. */ { 1.293, 1.666, 1.993, 2.378, 2.644, 3.204 }, 103 /* 75. */ { 1.293, 1.665, 1.992, 2.377, 2.643, 3.202 }, 104 /* 76. */ { 1.293, 1.665, 1.992, 2.376, 2.642, 3.201 }, 105 /* 77. */ { 1.293, 1.665, 1.991, 2.376, 2.641, 3.199 }, 106 /* 78. */ { 1.292, 1.665, 1.991, 2.375, 2.640, 3.198 }, 107 /* 79. */ { 1.292, 1.664, 1.990, 2.374, 2.640, 3.197 }, 108 /* 80. */ { 1.292, 1.664, 1.990, 2.374, 2.639, 3.195 }, 109 /* 81. */ { 1.292, 1.664, 1.990, 2.373, 2.638, 3.194 }, 110 /* 82. */ { 1.292, 1.664, 1.989, 2.373, 2.637, 3.193 }, 111 /* 83. */ { 1.292, 1.663, 1.989, 2.372, 2.636, 3.191 }, 112 /* 84. */ { 1.292, 1.663, 1.989, 2.372, 2.636, 3.190 }, 113 /* 85. */ { 1.292, 1.663, 1.988, 2.371, 2.635, 3.189 }, 114 /* 86. */ { 1.291, 1.663, 1.988, 2.370, 2.634, 3.188 }, 115 /* 87. */ { 1.291, 1.663, 1.988, 2.370, 2.634, 3.187 }, 116 /* 88. */ { 1.291, 1.662, 1.987, 2.369, 2.633, 3.185 }, 117 /* 89. */ { 1.291, 1.662, 1.987, 2.369, 2.632, 3.184 }, 118 /* 90. */ { 1.291, 1.662, 1.987, 2.368, 2.632, 3.183 }, 119 /* 91. */ { 1.291, 1.662, 1.986, 2.368, 2.631, 3.182 }, 120 /* 92. */ { 1.291, 1.662, 1.986, 2.368, 2.630, 3.181 }, 121 /* 93. */ { 1.291, 1.661, 1.986, 2.367, 2.630, 3.180 }, 122 /* 94. */ { 1.291, 1.661, 1.986, 2.367, 2.629, 3.179 }, 123 /* 95. */ { 1.291, 1.661, 1.985, 2.366, 2.629, 3.178 }, 124 /* 96. */ { 1.290, 1.661, 1.985, 2.366, 2.628, 3.177 }, 125 /* 97. */ { 1.290, 1.661, 1.985, 2.365, 2.627, 3.176 }, 126 /* 98. */ { 1.290, 1.661, 1.984, 2.365, 2.627, 3.175 }, 127 /* 99. */ { 1.290, 1.660, 1.984, 2.365, 2.626, 3.175 }, 128 /* 100. */ { 1.290, 1.660, 1.984, 2.364, 2.626, 3.174 } 129 }; 130 131 #define MAX_DS 8 132 static char symbol[MAX_DS] = { ' ', 'x', '+', '*', '%', '#', '@', 'O' }; 133 134 struct dataset { 135 char *name; 136 double *points; 137 unsigned lpoints; 138 double sy, syy; 139 unsigned n; 140 }; 141 142 static struct dataset * 143 NewSet(void) 144 { 145 struct dataset *ds; 146 147 ds = calloc(1, sizeof *ds); 148 ds->lpoints = 100000; 149 ds->points = calloc(sizeof *ds->points, ds->lpoints); 150 return(ds); 151 } 152 153 static void 154 AddPoint(struct dataset *ds, double a) 155 { 156 double *dp; 157 158 if (ds->n >= ds->lpoints) { 159 dp = ds->points; 160 ds->lpoints *= 4; 161 ds->points = calloc(sizeof *ds->points, ds->lpoints); 162 memcpy(ds->points, dp, sizeof *dp * ds->n); 163 free(dp); 164 } 165 ds->points[ds->n++] = a; 166 ds->sy += a; 167 ds->syy += a * a; 168 } 169 170 static double 171 Min(struct dataset *ds) 172 { 173 174 return (ds->points[0]); 175 } 176 177 static double 178 Max(struct dataset *ds) 179 { 180 181 return (ds->points[ds->n -1]); 182 } 183 184 static double 185 Avg(struct dataset *ds) 186 { 187 188 return(ds->sy / ds->n); 189 } 190 191 static double 192 Median(struct dataset *ds) 193 { 194 195 return (ds->points[ds->n / 2]); 196 } 197 198 static double 199 Var(struct dataset *ds) 200 { 201 202 return (ds->syy - ds->sy * ds->sy / ds->n) / (ds->n - 1.0); 203 } 204 205 static double 206 Stddev(struct dataset *ds) 207 { 208 209 return sqrt(Var(ds)); 210 } 211 212 static void 213 VitalsHead(void) 214 { 215 216 printf(" N Min Max Median Avg Stddev\n"); 217 } 218 219 static void 220 Vitals(struct dataset *ds, int flag) 221 { 222 223 printf("%c %3d %13.8g %13.8g %13.8g %13.8g %13.8g", symbol[flag], 224 ds->n, Min(ds), Max(ds), Median(ds), Avg(ds), Stddev(ds)); 225 printf("\n"); 226 } 227 228 static void 229 Relative(struct dataset *ds, struct dataset *rs, int confidx) 230 { 231 double spool, s, d, e, t; 232 int i; 233 234 i = ds->n + rs->n - 2; 235 if (i > NSTUDENT) 236 t = student[0][confidx]; 237 else 238 t = student[i][confidx]; 239 spool = (ds->n - 1) * Var(ds) + (rs->n - 1) * Var(rs); 240 spool /= ds->n + rs->n - 2; 241 spool = sqrt(spool); 242 s = spool * sqrt(1.0 / ds->n + 1.0 / rs->n); 243 d = Avg(ds) - Avg(rs); 244 e = t * s; 245 246 if (fabs(d) > e) { 247 248 printf("Difference at %.1f%% confidence\n", studentpct[confidx]); 249 printf(" %g +/- %g\n", d, e); 250 printf(" %g%% +/- %g%%\n", d * 100 / Avg(rs), e * 100 / Avg(rs)); 251 printf(" (Student's t, pooled s = %g)\n", spool); 252 } else { 253 printf("No difference proven at %.1f%% confidence\n", 254 studentpct[confidx]); 255 } 256 } 257 258 struct plot { 259 double min; 260 double max; 261 double span; 262 int width; 263 264 double x0, dx; 265 int height; 266 char *data; 267 char **bar; 268 int separate_bars; 269 int num_datasets; 270 }; 271 272 static struct plot plot; 273 274 static void 275 SetupPlot(int width, int separate, int num_datasets) 276 { 277 struct plot *pl; 278 279 pl = &plot; 280 pl->width = width; 281 pl->height = 0; 282 pl->data = NULL; 283 pl->bar = NULL; 284 pl->separate_bars = separate; 285 pl->num_datasets = num_datasets; 286 pl->min = 999e99; 287 pl->max = -999e99; 288 } 289 290 static void 291 AdjPlot(double a) 292 { 293 struct plot *pl; 294 295 pl = &plot; 296 if (a < pl->min) 297 pl->min = a; 298 if (a > pl->max) 299 pl->max = a; 300 pl->span = pl->max - pl->min; 301 pl->dx = pl->span / (pl->width - 1.0); 302 pl->x0 = pl->min - .5 * pl->dx; 303 } 304 305 static void 306 DimPlot(struct dataset *ds) 307 { 308 AdjPlot(Min(ds)); 309 AdjPlot(Max(ds)); 310 AdjPlot(Avg(ds) - Stddev(ds)); 311 AdjPlot(Avg(ds) + Stddev(ds)); 312 } 313 314 static void 315 PlotSet(struct dataset *ds, int val) 316 { 317 struct plot *pl; 318 int i, j, m, x; 319 unsigned n; 320 int bar; 321 322 pl = &plot; 323 if (pl->span == 0) 324 return; 325 326 if (pl->separate_bars) 327 bar = val-1; 328 else 329 bar = 0; 330 331 if (pl->bar == NULL) { 332 pl->bar = malloc(sizeof(char *) * pl->num_datasets); 333 memset(pl->bar, 0, sizeof(char*) * pl->num_datasets); 334 } 335 if (pl->bar[bar] == NULL) { 336 pl->bar[bar] = malloc(pl->width); 337 memset(pl->bar[bar], 0, pl->width); 338 } 339 340 m = 1; 341 i = -1; 342 j = 0; 343 for (n = 0; n < ds->n; n++) { 344 x = (ds->points[n] - pl->x0) / pl->dx; 345 if (x == i) { 346 j++; 347 if (j > m) 348 m = j; 349 } else { 350 j = 1; 351 i = x; 352 } 353 } 354 m += 1; 355 if (m > pl->height) { 356 pl->data = realloc(pl->data, pl->width * m); 357 memset(pl->data + pl->height * pl->width, 0, 358 (m - pl->height) * pl->width); 359 } 360 pl->height = m; 361 i = -1; 362 for (n = 0; n < ds->n; n++) { 363 x = (ds->points[n] - pl->x0) / pl->dx; 364 if (x == i) { 365 j++; 366 } else { 367 j = 1; 368 i = x; 369 } 370 pl->data[j * pl->width + x] |= val; 371 } 372 if (!isnan(Stddev(ds))) { 373 x = ((Avg(ds) - Stddev(ds)) - pl->x0) / pl->dx; 374 m = ((Avg(ds) + Stddev(ds)) - pl->x0) / pl->dx; 375 pl->bar[bar][m] = '|'; 376 pl->bar[bar][x] = '|'; 377 for (i = x + 1; i < m; i++) 378 if (pl->bar[bar][i] == 0) 379 pl->bar[bar][i] = '_'; 380 } 381 x = (Median(ds) - pl->x0) / pl->dx; 382 pl->bar[bar][x] = 'M'; 383 x = (Avg(ds) - pl->x0) / pl->dx; 384 pl->bar[bar][x] = 'A'; 385 } 386 387 static void 388 DumpPlot(void) 389 { 390 struct plot *pl; 391 int i, j, k; 392 393 pl = &plot; 394 if (pl->span == 0) { 395 printf("[no plot, span is zero width]\n"); 396 return; 397 } 398 399 putchar('+'); 400 for (i = 0; i < pl->width; i++) 401 putchar('-'); 402 putchar('+'); 403 putchar('\n'); 404 for (i = 1; i < pl->height; i++) { 405 putchar('|'); 406 for (j = 0; j < pl->width; j++) { 407 k = pl->data[(pl->height - i) * pl->width + j]; 408 if (k >= 0 && k < MAX_DS) 409 putchar(symbol[k]); 410 else 411 printf("[%02x]", k); 412 } 413 putchar('|'); 414 putchar('\n'); 415 } 416 for (i = 0; i < pl->num_datasets; i++) { 417 if (pl->bar[i] == NULL) 418 continue; 419 putchar('|'); 420 for (j = 0; j < pl->width; j++) { 421 k = pl->bar[i][j]; 422 if (k == 0) 423 k = ' '; 424 putchar(k); 425 } 426 putchar('|'); 427 putchar('\n'); 428 } 429 putchar('+'); 430 for (i = 0; i < pl->width; i++) 431 putchar('-'); 432 putchar('+'); 433 putchar('\n'); 434 } 435 436 static int 437 dbl_cmp(const void *a, const void *b) 438 { 439 const double *aa = a; 440 const double *bb = b; 441 442 if (*aa < *bb) 443 return (-1); 444 else if (*aa > *bb) 445 return (1); 446 else 447 return (0); 448 } 449 450 static struct dataset * 451 ReadSet(const char *n, int column, const char *delim) 452 { 453 FILE *f; 454 char buf[BUFSIZ], *p, *t; 455 struct dataset *s; 456 double d; 457 int line; 458 int i; 459 460 if (n == NULL) { 461 f = stdin; 462 n = "<stdin>"; 463 } else if (!strcmp(n, "-")) { 464 f = stdin; 465 n = "<stdin>"; 466 } else { 467 f = fopen(n, "r"); 468 } 469 if (f == NULL) 470 err(1, "Cannot open %s", n); 471 s = NewSet(); 472 s->name = strdup(n); 473 line = 0; 474 while (fgets(buf, sizeof buf, f) != NULL) { 475 line++; 476 477 i = strlen(buf); 478 if (buf[i-1] == '\n') 479 buf[i-1] = '\0'; 480 for (i = 1, t = strtok(buf, delim); 481 t != NULL && *t != '#'; 482 i++, t = strtok(NULL, delim)) { 483 if (i == column) 484 break; 485 } 486 if (t == NULL || *t == '#') 487 continue; 488 489 d = strtod(t, &p); 490 if (p != NULL && *p != '\0') 491 err(2, "Invalid data on line %d in %s\n", line, n); 492 if (*buf != '\0') 493 AddPoint(s, d); 494 } 495 fclose(f); 496 if (s->n < 3) { 497 fprintf(stderr, 498 "Dataset %s must contain at least 3 data points\n", n); 499 exit (2); 500 } 501 qsort(s->points, s->n, sizeof *s->points, dbl_cmp); 502 return (s); 503 } 504 505 static void 506 usage(char const *whine) 507 { 508 int i; 509 510 fprintf(stderr, "%s\n", whine); 511 fprintf(stderr, 512 "Usage: ministat [-C column] [-c confidence] [-d delimiter(s)] [-ns] [-w width] [file [file ...]]\n"); 513 fprintf(stderr, "\tconfidence = {"); 514 for (i = 0; i < NCONF; i++) { 515 fprintf(stderr, "%s%g%%", 516 i ? ", " : "", 517 studentpct[i]); 518 } 519 fprintf(stderr, "}\n"); 520 fprintf(stderr, "\t-C : column number to extract (starts and defaults to 1)\n"); 521 fprintf(stderr, "\t-d : delimiter(s) string, default to \" \\t\"\n"); 522 fprintf(stderr, "\t-n : print summary statistics only, no graph/test\n"); 523 fprintf(stderr, "\t-s : print avg/median/stddev bars on separate lines\n"); 524 fprintf(stderr, "\t-w : width of graph/test output (default 74 or terminal width)\n"); 525 exit (2); 526 } 527 528 int 529 main(int argc, char **argv) 530 { 531 struct dataset *ds[7]; 532 int nds; 533 double a; 534 const char *delim = " \t"; 535 char *p; 536 int c, i, ci; 537 int column = 1; 538 int flag_s = 0; 539 int flag_n = 0; 540 int termwidth = 74; 541 542 if (isatty(STDOUT_FILENO)) { 543 struct winsize wsz; 544 545 if ((p = getenv("COLUMNS")) != NULL && *p != '\0') 546 termwidth = atoi(p); 547 else if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &wsz) != -1 && 548 wsz.ws_col > 0) 549 termwidth = wsz.ws_col - 2; 550 } 551 552 ci = -1; 553 while ((c = getopt(argc, argv, "C:c:d:snw:")) != -1) 554 switch (c) { 555 case 'C': 556 column = strtol(optarg, &p, 10); 557 if (p != NULL && *p != '\0') 558 usage("Invalid column number."); 559 if (column <= 0) 560 usage("Column number should be positive."); 561 break; 562 case 'c': 563 a = strtod(optarg, &p); 564 if (p != NULL && *p != '\0') 565 usage("Not a floating point number"); 566 for (i = 0; i < NCONF; i++) 567 if (a == studentpct[i]) 568 ci = i; 569 if (ci == -1) 570 usage("No support for confidence level"); 571 break; 572 case 'd': 573 if (*optarg == '\0') 574 usage("Can't use empty delimiter string"); 575 delim = optarg; 576 break; 577 case 'n': 578 flag_n = 1; 579 break; 580 case 's': 581 flag_s = 1; 582 break; 583 case 'w': 584 termwidth = strtol(optarg, &p, 10); 585 if (p != NULL && *p != '\0') 586 usage("Invalid width, not a number."); 587 if (termwidth < 0) 588 usage("Unable to move beyond left margin."); 589 break; 590 default: 591 usage("Unknown option"); 592 break; 593 } 594 if (ci == -1) 595 ci = 2; 596 argc -= optind; 597 argv += optind; 598 599 if (argc == 0) { 600 ds[0] = ReadSet("-", column, delim); 601 nds = 1; 602 } else { 603 if (argc > (MAX_DS - 1)) 604 usage("Too many datasets."); 605 nds = argc; 606 for (i = 0; i < nds; i++) 607 ds[i] = ReadSet(argv[i], column, delim); 608 } 609 610 for (i = 0; i < nds; i++) 611 printf("%c %s\n", symbol[i+1], ds[i]->name); 612 613 if (!flag_n) { 614 SetupPlot(termwidth, flag_s, nds); 615 for (i = 0; i < nds; i++) 616 DimPlot(ds[i]); 617 for (i = 0; i < nds; i++) 618 PlotSet(ds[i], i + 1); 619 DumpPlot(); 620 } 621 VitalsHead(); 622 Vitals(ds[0], 1); 623 for (i = 1; i < nds; i++) { 624 Vitals(ds[i], i + 1); 625 if (!flag_n) 626 Relative(ds[i], ds[0], ci); 627 } 628 exit(0); 629 } 630