topic Partial Sum in SAS/IML Software and Matrix Computations

Partial Sum

Alex90 — Sat, 24 May 2014 10:07:13 GMT

Hi Rick

I want to find the partial sum of a process ut . The partial sum is defined as :

St=∑ uj

Lower bound for series : j=1

Upper bound for series : t

t= 1,2,...,300

I have no idea how to do this in Proc Iml.

Best Regards

Re: Partial Sum

Rick_SAS — Sat, 24 May 2014 12:07:32 GMT

Please direct your questions to the list.

I think the CUSUM function does what you want.

Re: Partial Sum

Alex90 — Sat, 24 May 2014 12:39:41 GMT

I am new to IMl , so i have no idea how to use that function .Can you write the whole program for me if it is possible ?

Regards

Re: Partial Sum

Rick_SAS — Sat, 24 May 2014 14:10:29 GMT

Half the battle (and fun!) of programming is reading the doc and trying out ideas to see what works. Give it a try; it's the best way to learn. You might also want to investigate the colon operator (:).

If you are new to SAS/IL, try these tips for beginners.

Re: Partial Sum

Alex90 — Sat, 24 May 2014 18:28:11 GMT

Dear Rick

Thank you very much for your assist. I get the answer. I also want to thank you for your encouragement . I think i am getting more interested in IML by doing solving this problem myself and with your excellent function.

Best Regards

Hossein

Re: Partial Sum

Rick_SAS — Sat, 24 May 2014 19:20:04 GMT

Hurray! Congratulations. Well done!