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Re: modified list interval calculation

• To: mathgroup at smc.vnet.net
• Subject: [mg21058] Re: modified list interval calculation
• From: "Deborah Leddon " <Dleddon at students.cas.unt.edu>
• Date: Sun, 12 Dec 1999 23:51:23 -0500 (EST)
• Organization: University of North Texas
• Sender: owner-wri-mathgroup at wolfram.com

Hi,
I am having trouble with the problem below:

I am trying to remove from list, t, those numbers in list, nt, that 
match and then I want to calculate the differences (intervals ) 
between succesive numbers in list, t, that do not contain the 
removed number. For example:
the two lists are;
t = {1,4,4.5,6,7,8,8.9,9,10,12,140,16,16.8,17,18,
	19,19.1,19.3,19.5,20}
nt = {8,8.9,10,17}

the resulting intervals would look like:
4 -1, 4.5 - 4, 6 - 4.5, 7 - 6, 140 -12, 16 - 140, 16.8 - 16, 19 - 18,
19.1 -19, 19.3 - 19.1, 19.5 - 19.3, 20 - 19.5
and of course the final list would be:
intervals = {3, .5, 1.5, 1, 128, -124, .8, 1, .1, .2, .2, .5};

Note that 9 was omitted from the calculation of intervals because it 
would have been involved in a calculation with a removed number 
from the list, t. 

Thanks in advance if anyone can help.

Regards, Debbie

• Follow-Ups:
  • Re: Re: modified list interval calculation
    • From: Hartmut Wolf <hwolf@debis.com>