Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » sci.math.* » sci.math.independent

Topic: Help with algorithm for adjusting RGB colors
Replies: 8   Last Post: Jan 6, 2013 11:25 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Richard Tobin

Posts: 1,255
Registered: 12/6/04
Re: Help with algorithm for adjusting RGB colors
Posted: Jan 5, 2013 3:51 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

In article <6cpge8lpbou490ull8025mo3du96mt9t5a@4ax.com>,
David C. Ullrich <ullrich@math.okstate.edu> wrote:

>> Sub MyRandCharColors()
>> Dim oChr As Range
>> Dim sngR As Single, sngG As Single, sngB As Single
>> Randomize


>It's a common thing, people calling Randomize, or the
>equivalent in another language, in the body of a
>function like this, thinking that the more calls to
>Randomize the better.


There are other reasons why the function might call Randomize.
In particular, it might be considered a library function and
not want to assume that the calling program will call it.

>You think calling Randomize over and over is
>making things more random, but it actually
>makes things _less_ random. The story:
>Randomize sets some "seed" based on the
>system clock. Once that seed is set, repeated
>calls to Rnd return a sequence of quasi-random
>numbers, starting with he seed.


I hope not. It would make more sense for it to combine something
based on the clock with the current random state.



-- Richard



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.