Focal Point Banner


As of December 1, 2020, Focal Point is retired and repurposed as a reference repository. We value the wealth of knowledge that's been shared here over the years. You'll continue to have access to this treasure trove of knowledge, for search purposes only.

Join the TIBCO Community
TIBCO Community is a collaborative space for users to share knowledge and support one another in making the best use of TIBCO products and services. There are several TIBCO WebFOCUS resources in the community.

  • From the Home page, select Predict: WebFOCUS to view articles, questions, and trending articles.
  • Select Products from the top navigation bar, scroll, and then select the TIBCO WebFOCUS product page to view product overview, articles, and discussions.
  • Request access to the private WebFOCUS User Group (login required) to network with fellow members.

Former myibi community members should have received an email on 8/3/22 to activate their user accounts to join the community. Check your Spam folder for the email. Please get in touch with us at community@tibco.com for further assistance. Reference the community FAQ to learn more about the community.



Read-Only Read-Only Topic
Go
Search
Notify
Tools
Devide two fields
 Login/Join
 
Virtuoso
posted
I have a database that holds the stock index values for several stocks per month over the last 60 months.

I need to calculate the moving (or rolling) change of these values by dividing #37 by #1 and #38 by #2 and so on till #60 by #24.

How can that be done?

When I have the results (24 values per stock) I have to calculate the MEAN, AVERAGE, VARIANCE.
(This issue was brought up here standard deviation. )

Thanks for your help and ideas.




Frank

prod: WF 7.6.10 platform Windows,
databases: msSQL2000, msSQL2005, RMS, Oracle, Sybase,IE7
test: WF 7.6.10 on the same platform and databases,IE7

 
Posts: 2387 | Location: Amsterdam, the Netherlands | Registered: December 03, 2006Report This Post
Expert
posted Hide Post
well, hmm, lets see.
you have to get #1 into the same record as #37.
so you
1) build your extract
MONTH/I6YYM VALUE
2) build a 2nd extract
BASEMONTH BASEVALUE
where BASEMONTH is the AYM(MONTH,-36,'I6YYM')
Now just join em up
JOIN MONTH IN HOLD1 TO BASEMONTH IN HOLD2 AS..
and you've got the basevalue in the same record as the original value.
Seems like it should work..

i bemoan the death of EPS, Econometric Programming Systems by Data Resources. It was so easy..
SET FREQ = M
RATEOFCHANGE = VALUE / VALUE\36;
reads: value divided by same value lag 36, when the workspace was set to monthly frequency.
*sigh*




In Focus since 1979///7706m/5 ;wintel 2008/64;OAM security; Oracle db, ///MRE/BID
 
Posts: 3811 | Location: Manhattan | Registered: October 28, 2003Report This Post
  Powered by Social Strata  

Read-Only Read-Only Topic


Copyright © 1996-2020 Information Builders