Hello.
round(Z[,+]+ y - t(Z[+,]+v+m),.1)
I am not familiar with SAS, what [,+], and [+,] will do on Z matrix and what is their difference.
Thank you
Those are subscript reduction operators. They collapse the dimensionality of your matrix and the + tells SAS to do this by summing.
If you have a matrix Z = {1 2 3, 4 5 6, 7 8 9} then Z[+,] = {(1+4+8) (2+5+8) (3+6+9)} = {12 15 18}, which is a rowvector. Z[,+] = {1+2+3,4+5+6,7+8+9} = {6,15,24}, which is a columnvector.
See http://support.sas.com/documentation/cdl/en/imlug/59656/HTML/default/viewer.htm#workmatrix_sect14.ht... for more info.
Thank you very much.
Join us for SAS Innovate April 16-19 at the Aria in Las Vegas. Bring the team and save big with our group pricing for a limited time only.
Pre-conference courses and tutorials are filling up fast and are always a sellout. Register today to reserve your seat.
Learn how to run multiple linear regression models with and without interactions, presented by SAS user Alex Chaplin.
Find more tutorials on the SAS Users YouTube channel.