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  • #1

    Plotting a histogram graph with t-distribution option

    Dear All,

    I have the following data:

    Code:
    * Example generated by -dataex-. For more info, type help dataex
clear
input int date double sp long newdate
-3650 16.66   0
-3649 16.85   1
-3648 16.93   2
-3647 16.98   3
-3644 17.08   4
-3643 17.03   5
-3642 17.09   6
-3641 16.76   7
-3640 16.67   8
-3637 16.72   9
-3636 16.86  10
-3635 16.85  11
-3634 16.87  12
-3633  16.9  13
-3630 16.92  14
-3629 16.86  15
-3628 16.74  16
-3627 16.73  17
-3626 16.82  18
-3623 17.02  19
-3622 17.05  20
-3621 17.05  21
-3620 17.23  22
-3619 17.29  23
-3616 17.32  24
-3615 17.23  25
-3614 17.21  26
-3613 17.28  27
-3612 17.24  28
-3608 17.06  29
-3607 17.06  30
-3606 16.99  31
-3605 17.15  32
-3602  17.2  33
-3601 17.17  34
-3599 17.21  35
-3598 17.28  36
-3595 17.28  37
-3594 17.22  38
-3593 17.24  39
-3592 17.23  40
-3591 17.29  41
-3588 17.32  42
-3587  17.2  43
-3586 17.19  44
-3585 17.07  45
-3584 17.09  46
-3581 17.12  47
-3580 17.25  48
-3579 17.45  49
-3578 17.49  50
-3577 17.45  51
-3574 17.44  52
-3573 17.45  53
-3572 17.55  54
-3571 17.56  55
-3570 17.56  56
-3567 17.46  57
-3566 17.53  58
-3565 17.44  59
-3564  17.3  60
-3563 17.29  61
-3560 17.53  62
-3559 17.55  63
-3558 17.63  64
-3557 17.78  65
-3553 17.85  66
-3552 17.75  67
-3551 17.94  68
-3550 17.98  69
-3549 17.96  70
-3546 17.88  71
-3545 18.03  72
-3544 18.05  73
-3543 17.93  74
-3542 17.96  75
-3539 17.83  76
-3538 17.83  77
-3537 17.76  78
-3536 17.86  79
-3535 17.96  80
-3532 18.22  81
-3531 18.11  82
-3530 18.27  83
-3529 18.12  84
-3528 18.22  85
-3525 18.27  86
-3524 18.27  87
-3523 18.29  88
-3522 18.29  89
-3521 18.18  90
-3518 18.26  91
-3517 18.44  92
-3516 18.52  93
-3515 18.56  94
-3514 18.68  95
-3511  18.6  96
-3510 18.71  97
-3509 18.69  98
-3508 18.69  99
-3507 18.67 100
-3504 18.72 101
-3502 18.78 102
-3501 18.77 103
-3500 18.79 104
-3497  18.6 105
-3496 18.88 106
-3495 18.93 107
-3494 19.14 108
-3493 19.26 109
-3490  19.4 110
-3489 19.25 111
-3488 18.98 112
-3487 18.93 113
-3486 18.97 114
-3483 18.92 115
-3482 18.83 116
-3481    19 117
-3480 19.16 118
-3479 19.14 119
-3476 18.11 120
-3475 17.91 121
-3474 18.11 122
-3473 17.44 123
-3472 17.69 124
-3469 17.64 125
-3467 17.81 126
-3466 17.91 127
-3465 17.67 128
-3462 17.59 129
-3461 17.32 130
-3460 16.87 131
-3459 16.69 132
-3458 16.87 133
-3455 16.68 134
-3454 17.06 135
-3453 17.36 136
-3452 17.61 137
-3451 17.59 138
-3448 17.48 139
-3447 17.23 140
-3446 17.27 141
-3445  17.5 142
-3444 17.69 143
-3441 17.84 144
-3440 18.02 145
-3439 17.95 146
-3438 17.99 147
-3437 18.14 148
-3434 18.41 149
-3433 18.46 150
-3432 18.61 151
-3431 18.48 152
-3430 18.28 153
-3427 18.29 154
-3426 18.32 155
-3425 18.34 156
-3424 18.54 157
-3423 18.68 158
-3420  18.7 159
-3419 18.68 160
-3418 18.82 161
-3417 18.79 162
-3416 18.54 163
-3413 18.53 164
-3412 18.54 165
-3411 18.43 166
-3410 18.42 167
-3409 18.55 168
-3405 18.68 169
-3404 18.54 170
-3403 18.59 171
-3402 18.75 172
-3399 18.61 173
-3398 18.87 174
-3397 19.09 175
-3396 19.18 176
-3395 19.29 177
-3392 19.37 178
-3391 19.31 179
-3390 19.21 180
-3389 19.37 181
-3388 19.44 182
-3385 19.42 183
-3384 19.14 184
-3383 19.41 185
-3382 19.42 186
-3381 19.45 187
-3378 19.69 188
-3377 19.66 189
-3376    20 190
-3375 19.89 191
-3374 20.12 192
-3371    20 193
-3370 19.78 194
-3369 19.86 195
-3367 19.85 196
-3364 19.71 197
-3363 19.89 198
-3362 20.01 199
-3361 20.02 200
-3360 19.96 201
-3357 19.96 202
-3356 20.08 203
-3355 20.05 204
-3354 19.61 205
-3353 19.77 206
-3350 19.61 207
-3349 19.53 208
-3348 19.56 209
-3347 19.73 210
-3346 19.85 211
-3343 19.36 212
-3341 19.56 213
-3340 19.79 214
-3339 19.94 215
-3336 20.01 216
-3335 19.86 217
-3334 19.82 218
-3333 19.72 219
-3332 19.86 220
-3329 19.93 221
-3328 19.88 222
-3327 20.16 223
-3325 20.32 224
-3322 20.18 225
-3321 19.56 226
-3320 19.37 227
-3319 19.51 228
-3318 19.66 229
-3315    19 230
-3314 19.31 231
-3313 19.45 232
-3312  19.4 233
-3311  19.4 234
-3308 19.72 235
-3307 19.68 236
-3306 19.67 237
-3305 19.43 238
-3304 19.33 239
-3301 19.85 240
-3300 19.96 241
-3299 19.97 242
-3298 19.98 243
-3297 20.07 244
-3293 19.92 245
-3292  20.3 246
-3291 20.38 247
-3290 20.43 248
-3286 20.77 249
-3285 20.69 250
-3284 20.87 251
-3283 20.87 252
-3280    21 253
-3279 21.12 254
-3278 20.85 255
-3277 21.19 256
-3276 21.11 257
-3273  21.3 258
-3272 21.46 259
-3271 21.55 260
-3270  21.4 261
-3269 21.36 262
-3266 21.18 263
-3265 21.26 264
-3264 21.16 265
-3263 21.03 266
-3262 21.26 267
-3259 21.67 268
-3258 21.74 269
-3257 21.66 270
-3256 21.77 271
-3255 21.96 272
-3252  22.2 273
-3251 22.12 274
-3250 21.99 275
-3249 22.09 276
-3248 22.17 277
-3244 22.18 278
-3243 22.12 279
-3242    22 280
-3241 22.13 281
-3238 21.83 282
-3237 21.79 283
-3236 21.86 284
-3234 21.92 285
-3231 21.93 286
-3230 21.76 287
-3229  21.8 288
-3228 21.85 289
-3227 21.93 290
-3224 21.79 291
-3223 21.79 292
-3222 21.86 293
-3221 21.95 294
-3220 21.95 295
-3217  21.7 296
-3216 21.41 297
-3215 21.25 298
-3214 21.29 299
-3213 21.64 300
-3210 21.56 301
-3209 21.52 302
-3208 21.64 303
-3207 21.73 304
-3203 21.53 305
-3202 21.51 306
-3201 21.26 307
-3200 21.33 308
-3199 21.48 309
-3196 21.32 310
-3195 21.26 311
-3194  21.4 312
-3193 21.69 313
-3192 21.72 314
-3189 21.68 315
-3188 21.65 316
-3187 21.64 317
-3186 21.83 318
-3185 22.09 319
-3182 22.04 320
-3181 22.09 321
-3180 22.13 322
-3179 22.04 323
-3178 22.04 324
-3175 22.05 325
-3174 21.96 326
-3173 21.97 327
-3172 22.16 328
-3171 22.39 329
-3168 22.43 330
-3167 22.53 331
-3166 22.62 332
-3165 22.81 333
-3164 22.77 334
-3161 22.63 335
-3160 22.61 336
-3159 22.64 337
-3158 22.51 338
-3157 22.33 339
-3154 22.18 340
-3153 21.76 341
-3152 21.69 342
-3151 21.91 343
-3150 21.51 344
-3147 21.46 345
-3146 21.36 346
-3145 21.16 347
-3144 21.05 348
-3143 21.03 349
-3140 21.21 350
-3139 21.35 351
-3137 21.52 352
-3136 21.48 353
-3133 21.24 354
-3132 21.33 355
-3131 21.48 356
-3130 21.56 357
-3129 21.49 358
-3126 21.61 359
-3125 21.52 360
-3124 21.55 361
-3123 21.84 362
-3122 22.04 363
-3119 22.05 364
-3118 22.02 365
-3117 21.91 366
-3116 21.78 367
-3115 21.55 368
-3112 21.29 369
-3111  21.3 370
-3110 21.37 371
-3109  21.1 372
-3108 20.96 373
-3105  21.1 374
-3104 21.23 375
-3102 21.64 376
-3101 21.64 377
-3098 21.73 378
-3097 21.63 379
-3096 21.68 380
-3095  21.8 381
-3094 21.98 382
-3091 21.73 383
-3090 21.92 384
-3089 21.88 385
-3088 21.84 386
-3087 21.88 387
-3084  22.1 388
-3083 22.44 389
-3082 22.32 390
-3081 22.47 391
-3080 22.53 392
-3077 22.63 393
-3076  22.4 394
-3075 22.51 395
-3074 22.82 396
-3073 22.85 397
-3070 23.01 398
-3069 23.03 399
-3068 22.93 400
-3067 22.84 401
-3066 22.79 402
-3063  22.8 403
-3062  22.7 404
-3061 22.79 405
-3060 22.87 406
-3059 22.94 407
-3056 22.93 408
-3055 22.83 409
-3054 22.75 410
-3053  22.9 411
-3052 22.88 412
-3049 22.85 413
-3048  22.9 414
-3047 23.08 415
-3046 23.24 416
-3045 23.28 417
-3041 23.28 418
-3040 23.42 419
-3039 23.47 420
-3038 23.53 421
-3035 23.62 422
-3034  23.5 423
-3033  23.6 424
-3032 23.71 425
-3031 23.69 426
-3028 23.62 427
-3027 23.59 428
-3026 23.59 429
-3025 23.57 430
-3024  23.4 431
-3021  23.3 432
-3020 23.38 433
-3019  23.4 434
-3018 23.27 435
-3017 23.26 436
-3014 23.47 437
-3013 23.64 438
-3012 23.79 439
-3011 23.72 440
-3010 23.78 441
-3007 23.75 442
-3006 23.65 443
-3005 23.61 444
-3004  23.7 445
-3000 23.85 446
-2999 23.77 447
-2998 23.69 448
-2997 23.67 449
-2996 23.32 450
-2993 22.75 451
-2992 22.84 452
-2991 23.03 453
-2990 22.96 454
-2989 22.81 455
-2986 22.69 456
-2985 22.66 457
-2984 22.94 458
-2983  23.1 459
-2982 22.93 460
-2979 22.82 461
-2977 22.49 462
-2976 22.47 463
-2975 22.75 464
-2971 22.79 465
-2970 22.85 466
-2969 22.84 467
-2968 22.82 468
-2965 22.73 469
-2964 22.68 470
-2963 22.64 471
-2961  22.4 472
-2958 22.43 473
-2957 22.66 474
-2956 22.61 475
-2955 22.67 476
-2954 22.88 477
-2951 23.01 478
-2950 23.14 479
-2949 23.07 480
-2948 23.34 481
-2947 23.38 482
-2944 23.42 483
-2943  23.3 484
-2942 23.37 485
-2941 23.39 486
-2940 23.37 487
-2937 23.41 488
-2936 23.49 489
-2935 23.57 490
-2934 23.57 491
-2933 23.51 492
-2930 23.54 493
-2928 23.44 494
-2927 23.65 495
-2926 23.69 496
-2923 23.77 497
-2921  23.8 498
-2920 23.88 499
-2919 23.92 500
-2916 23.91 501
-2915 23.82 502
-2914 23.74 503
-2913 23.86 504
-2912 23.98 505
-2909 24.16 506
-2908 24.06 507
-2907 24.09 508
-2906  24.2 509
-2905 24.25 510
-2902 24.46 511
-2901 24.66 512
-2900 24.54 513
-2899 24.56 514
-2898 24.55 515
-2895 24.61 516
-2894 24.57 517
-2893 24.23 518
-2892 24.14 519
-2891  24.3 520
-2888 24.12 521
-2887 24.11 522
-2886 24.18 523
-2885 24.11 524
-2884 24.24 525
-2881 24.11 526
-2879 23.92 527
-2878 23.87 528
-2877 23.86 529
-2874 23.74 530
-2873 23.36 531
-2872 23.09 532
-2871 23.16 533
-2867 23.23 534
-2866 23.15 535
-2865 23.18 536
-2864 23.29 537
-2863 23.26 538
-2860 23.29 539
-2859 23.68 540
-2858 23.71 541
-2857 23.69 542
-2856 23.72 543
-2853  23.6 544
-2852 23.62 545
-2851 23.73 546
-2850 23.75 547
-2849 23.75 548
-2846 23.92 549
-2845 23.87 550
-2844 23.82 551
-2843 23.89 552
-2842 23.93 553
-2839 23.93 554
-2838 23.79 555
-2837 23.78 556
-2836 23.99 557
-2835 24.18 558
-2832 24.37 559
-2831 24.18 560
-2830 24.12 561
-2829 24.12 562
-2828 24.02 563
-2825  23.8 564
-2824 23.91 565
-2823 23.94 566
-2822 24.11 567
-2818 23.95 568
-2817 23.65 569
-2816 23.58 570
-2815 23.41 571
-2814  23.5 572
-2811 23.69 573
-2810 23.58 574
-2809 23.48 575
-2808 23.43 576
-2807 23.54 577
-2804 23.55 578
-2803 23.49 579
-2802 23.32 580
-2801 23.17 581
-2800 23.56 582
-2797 23.66 583
-2796 23.67 584
-2795 23.81 585
-2794 23.86 586
-2793 23.84 587
-2790 23.75 588
-2789 23.78 589
-2788 23.68 590
-2787  23.6 591
-2786 23.56 592
-2783 23.61 593
-2782 23.74 594
-2781 23.78 595
-2780 23.91 596
-2779 23.89 597
-2776 23.94 598
-2775 23.88 599
-2774 23.84 600
-2773 23.86 601
-2769  23.8 602
-2768 23.78 603
-2767 23.95 604
-2766  24.1 605
-2765 24.26 606
-2762 24.37 607
-2761 24.23 608
-2760 24.31 609
-2759 24.31 610
-2758 24.37 611
-2755  24.3 612
-2754 24.33 613
-2753 24.43 614
-2752 24.51 615
-2751 24.59 616
-2748 24.56 617
-2747  24.6 618
-2746 24.66 619
-2745 24.75 620
-2744 24.83 621
-2741 24.96 622
-2740 25.12 623
-2739 25.06 624
-2738 25.05 625
-2734 24.97 626
-2733 24.96 627
-2732 24.86 628
-2731 24.81 629
-2730 24.98 630
-2727 25.03 631
-2726 25.16 632
-2725 25.16 633
-2724 25.05 634
-2723 24.85 635
-2720 24.95 636
-2719    25 637
-2718 25.11 638
-2717 25.24 639
-2716 25.16 640
-2713  25.2 641
-2712 25.26 642
-2711 25.37 643
-2710  25.4 644
-2709 25.45 645
-2706 25.43 646
-2705 25.46 647
-2704 25.44 648
-2703 25.52 649
-2702 25.55 650
-2699 25.52 651
-2698 25.31 652
-2697 25.28 653
-2696 25.28 654
-2695  25.2 655
-2692 24.94 656
-2691 24.89 657
-2690 24.95 658
-2689 24.98 659
-2688 24.99 660
-2685 24.87 661
-2684 24.83 662
-2683 24.94 663
-2682 24.97 664
-2681 25.03 665
-2677 25.15 666
-2676 25.25 667
-2675 25.24 668
-2674 25.21 669
-2671 25.11 670
-2670 24.86 671
-2669 24.69 672
-2668 24.72 673
-2667 24.71 674
-2664 24.45 675
-2663 24.53 676
-2662 24.58 677
-2661 24.51 678
-2660 24.57 679
-2657 24.59 680
-2656  24.7 681
-2655 24.79 682
-2654 24.81 683
-2653 24.73 684
-2650 24.68 685
-2649 24.54 686
-2648 24.48 687
-2647 24.52 688
-2646  24.5 689
-2643 24.44 690
-2642  24.4 691
-2641 24.58 692
-2640 24.57 693
-2639 24.55 694
-2635 24.48 695
-2634 24.06 696
-2633 23.91 697
-2632  24.2 698
-2629 24.13 699
-2628 24.07 700
-2627  23.8 701
-2626 23.87 702
-2625 24.03 703
-2622 24.09 704
-2621 24.13 705
-2620 24.15 706
-2619 24.15 707
-2618 24.52 708
-2615  24.6 709
-2613 24.67 710
-2612 24.77 711
-2611 24.78 712
-2608 24.77 713
-2606 24.65 714
-2605 24.71 715
-2604 24.75 716
-2601  24.8 717
-2600 25.16 718
-2599 25.33 719
-2598 25.28 720
-2597 25.27 721
-2594 25.42 722
-2593 25.36 723
-2592 25.52 724
-2590 25.66 725
-2587 25.68 726
-2586 25.74 727
-2585 25.71 728
-2584 25.61 729
-2583 25.62 730
-2580 25.76 731
-2579 25.93 732
-2578 25.98 733
-2577 25.96 734
-2576 26.04 735
-2573 26.04 736
-2572 26.07 737
-2571 26.04 738
-2570 26.03 739
-2569 26.15 740
-2566  26.3 741
-2565 26.19 742
-2564 26.21 743
-2562 26.25 744
-2559  26.4 745
-2558 26.59 746
-2557 26.57 747
end
format %tdnn/dd/CCYY date
format %tbspdaily newdate
    ------------------ copy up to and including the previous line ------------------

    Listed 748 out of 748 observations
    r; t=0.02 16:03:02

    . tsset newdate
    note: file spdaily.stbcal not found

    Time variable: newdate, 0 to 747
    Delta: 1 day
    r; t=0.03 16:06:27

    . gen lnsp=ln(sp)
    r; t=0.00 16:06:32

    . gen rsp=100*(lnsp-L.lnsp)
    (1 missing value generated)
    r; t=0.01 16:06:41

    . histogram rsp, normal
    (bin=27, start=-5.5315971, width=.30319161)
    r; t=1.98 16:06:48

    . drop sp lnsp
    r; t=0.00 16:06:58

    . dataex, count(748)

    ----------------------- copy starting from the next line -----------------------
    Code:
    * Example generated by -dataex-. For more info, type help dataex
clear
input int date long newdate float rsp
-3650   0          .
-3649   1  1.1339903
-3648   2   .4736662
-3647   3  .29489994
-3644   4   .5872011
-3643   5 -.29318333
-3642   6   .3517151
-3641   7 -1.9498587
-3640   8  -.5384207
-3637   9   .2994776
-3636  10   .8338451
-3635  11 -.05934238
-3634  12  .11863708
-3633  13  .17766953
-3630  14  .11827946
-3629  15  -.3552437
-3628  16  -.7143021
-3627  17  -.0597477
-3626  18   .5365133
-3623  19  1.1820555
-3622  20  .17609596
-3621  21          0
-3620  22  1.0501862
-3619  23   .3476381
-3616  24  .17335415
-3615  25  -.5209923
-3614  26  -.1161337
-3613  27   .4059076
-3612  28 -.23174286
-3608  29 -1.0495901
-3607  30          0
-3606  31  -.4111528
-3605  32   .9373188
-3602  33  .29113293
-3601  34  -.1745701
-3599  35  .23269653
-3598  36   .4059076
-3595  37          0
-3594  38  -.3478289
-3593  39    .116086
-3592  40 -.05803108
-3591  41   .3476381
-3588  42  .17335415
-3587  43  -.6952524
-3586  44 -.05815029
-3585  45  -.7005453
-3584  46   .1171112
-3581  47   .1753807
-3580  48   .7564783
-3579  49  1.1527538
-3578  50  .22895336
-3577  51 -.22895336
-3574  52 -.05733967
-3573  53  .05733967
-3572  54   .5714178
-3571  55   .0569582
-3570  56          0
-3567  57   -.571084
-3566  58   .4001141
-3565  59  -.5147457
-3564  60   -.805974
-3563  61  -.0578165
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end
format %tdnn/dd/CCYY date
format %tbspdaily newdate
    I am going to plot an histogram graph for the variable rsp (daily returns of the S&P500 index). So I type:

    Code:
    histogram rsp, normal
    Suppose that instead of plotting a normal distribution over the histrogram plot I want to plot a t-distribution graph. I cannot find a way to do so. Do you have any suggestion to share?

    Thanks in advance,

    Dario
    Tags: histogram
  • #2
    I guess you'd need to call up twoway function to draw a density curve. You would presumably want to match a distribution with a specified number of degrees of freedom to the mean and SD of the variable. A detail is that the t distribution doesn't have unit SD and indeed for low df has no defined SD.

    Comment

    • #3
      Nick Cox indeed. Given the characteristics of the distribution of returns, the normal distribution is not a good match. Instead i would like to compare the distribution of the returns with a t-distribution with a number of degrees of freedom of 4, using the mean and the sd of the variable. Thanks for your suggestion. I will check twoway function.

      Comment

      • #4
        On second thoughts, I would recommend a quantile plot. You could use qplot from the Stata Journal:

        Code:
        . sysuse auto, clear
(1978 automobile data)

. qplot weight, trscale(invt(4, @))

.
        Code:
        . search qplot , sj historical

Search of official help files, FAQs, Examples, and Stata Journals

SJ-19-3 gr42_8  . . . . . . . . . . . . . . . . . .  Software update for qplot
        (help qplot if installed) . . . . . . . . . . . . . . . . .  N. J. Cox
        Q3/19   SJ 19(3):748--751
        graph defaults have been tweaked and help file has been
        extended

SJ-19-3 gr0053_1  . . . . . . . . . . . . . . .  Software update for multqplot
        (help multqplot if installed) . . . . . . . . . . . . . . .  N. J. Cox
        Q3/19   SJ 19(3):748--751
        help file for multqplot to draw multiple quantile plots has
        been expanded

SJ-16-3 gr42_7  . . . . . . . . . . . . . . . . . .  Software update for qplot
        (help qplot if installed) . . . . . . . . . . . . . . . . .  N. J. Cox
        Q3/16   SJ 16(3):813--814
        option midpoint has been added

SJ-12-3 gr0053  . Speaking Stata: Axis practice, or what goes where on a graph
        (help multqplot if installed) . . . . . . . . . . . . . . .  N. J. Cox
        Q3/12   SJ 12(3):549--561
        discusses variations on what goes on each axis of a two-way
        plot; provides multiple quantile plots

SJ-12-1 gr42_6  . . . . . . . . . . . . . . . . . .  Software update for qplot
        (help qplot if installed) . . . . . . . . . . . . . . . . .  N. J. Cox
        Q1/12   SJ 12(1):167
        provides better handling of y-axis titles

SJ-10-4 gr42_5  . . . . . . . . . . . . . . . . . .  Software update for qplot
        (help qplot if installed) . . . . . . . . . . . . . . . . .  N. J. Cox
        Q4/10   SJ 10(4):691
        better handling of axis titling and missing values

SJ-6-4  gr42_4  . . . . . . . . . . . . . . . . . .  Software update for qplot
        (help qplot if installed) . . . . . . . . . . . . . . . . .  N. J. Cox
        Q4/06   SJ 6(4):597
        better handling of x-axis titling, a new option allowing
        the user to specify an alternative plotting position or
        rank variable

SJ-5-3  gr0018  . . . . . . . . . .  Speaking Stata: The protean quantile plot
        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox
        Q3/05   SJ 5(3):442--460           (see gr41_3 and gr42_3 for commands)
        discusses quantile and distribution plots as used in
        the analysis of species abundance data in ecology

SJ-5-3  gr42_3  . . . . . . . . . . . . . . . . . .  Software update for qplot
        (help qplot if installed) . . . . . . . . . . . . . . . . .  N. J. Cox
        Q3/05   SJ 5(3):471
        simplified syntax; both by() and over() are now allowed

SJ-4-1  gr0003  . . . . . . . . . . . . Speaking Stata: Graphing distributions
        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox
        Q1/04   SJ 4(1):66--88                                   (no commands)
        a review of official and user-written commands for
        graphing univariate distributions; includes tricks
        beyond what is obviously and readily available

SJ-4-1  gr42_2  Software update for Quantile plots, generalized; renamed qplot
        (help qplot if installed) . . . . . . . . . . . . . . . . .  N. J. Cox
        Q1/04   SJ 4(1):97
        software update for quantil2, now renamed qplot

        Comment

        • #5
          Nick Cox thanks again. I will check your second suggestions too.

          Comment

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