#### 8.2.58.56 tblish.dataset.randu ¶

Static Method: `out =` randu `()` ¶

  Random Numbers from Congruential Generator RANDU

  #### Description ¶

  400 triples of successive random numbers were taken from the VAX FORTRAN function RANDU running under VMS 1.5.

  #### Format ¶

  `record`

    Index of the record.

  `x`

    X value of the triple.

  `y`

    Y value of the triple.

  `z`

    Z value of the triple.

  #### Details ¶

  In three dimensional displays it is evident that the triples fall on 15 parallel planes in 3-space. This can be shown theoretically to be true for all triples from the RANDU generator.

  These particular 400 triples start 5 apart in the sequence, that is they are ((U[5i+1], U[5i+2], U[5i+3]), i= 0, ..., 399), and they are rounded to 6 decimal places.

  Under VMS versions 2.0 and higher, this problem has been fixed.

  #### Source ¶

  David Donoho

  #### Examples ¶

      t = tblish.dataset.randu;