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8.2.57.56 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;