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P6 Calculating (apparently incorrect) variances

3 replies [Last post]
Andrew Edwards
User offline. Last seen 6 years 30 weeks ago. Offline
Joined: 9 Nov 2004
Posts: 15
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I'm tearing whats left of my hair out here.

I'm trying to set up a variance layout to assist with a delay report I'm writing.

The issue I have is the variances P6 is calculating seem incorrect, in some circumstances looking approximately double the difference between the calendar dates.

The activities are on a 24hr calendar, could this explain the issue?

Cheers in advance, Andy.

4787
variances.png

Replies

Rafael Davila
User offline. Last seen 3 hours 10 min ago. Offline
Joined: 1 Mar 2004
Posts: 5229

Once you figure out the intricacies of your software you should be up and running.

Keep in mind at times it is convenient to know date differences if using activity or a reference calendar, in such case user defined fields and formulas [Global Change] can be of help, the details will depend on your software.

Say an activity is projected to finish late by a 2 days plus 2 hours but if it happened just after a weekend, in terms of activity calendar it is late by 2 hours.  This information is good to know and compare side by side.

 photo DT_Functions_zpseyvpxnlj.png

Good luck.

Zoltan Palffy
User offline. Last seen 6 weeks 6 days ago. Offline
Joined: 13 Jul 2009
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david is correct make sure that your TIMES are correct and that your decimal places are set to 2 places 

David Kelly
User offline. Last seen 1 year 40 weeks ago. Offline
Joined: 19 Oct 2004
Posts: 630

You need to change the dates to include time, and changethe durations to hours before you can check the arithmetic. P6 does all of its calculations and store all of its quantities in hours.