Hello: I'm trying to convert the following matlab code to sas iml. do=1 to maxzeros; matrixname[i]=0:(2^-i)-1; end; matrixname is a cell matrix, which corresponds to a list matrix in SAS IML.   The operator ^ raises 2 to a power. So let's say the index (i)=3. Then this code creates a matrix cell with 8 values 0,1,2,3,4,5,6,7.   I've written the following in IML so far: nz2enum=listcreate(maxnonzeros); do i=1 to maxnonzeros; max=(2 ## i); do k=1 to max; val=k-1; call ListSetItem (nz2enum,i,{val});    This inserts the word val. How to get it to insert the number val? end; end; run listprint (nz2enum); ... View more

In a SAS IML program I am using there is a line of code that follows: run Struct(subsets);   What does this statement do. Does it call a subroutine, R code ????? Thanks ... View more

I am trying to create a 3 x13 matrix called it deaths, that contains the sum of the number of deaths for each of three years. The matrix called outcome is a column vector with each row containing 1 to 3 years of observations for each person. Let's say there are 1,000 rows. The matrix called time also has 1,000 rows, but in addition, each of 3 columns contains an indicator for whether the record is from time 1 (col 1), time 2 (col 2) and time 3 (col 3).   I want to sum the deaths in outcome for each individual year. That is, I want to use the indicator in the time matrix to sum those specific rows in the outcome matrix. Example: Outcome is first column below. time (col1) time (col 2) time (col3) are the columns of the time matrix... row 1 0   1    0  0 row 2 0   0    1  0 row 3 0   0    0  1 row4  0    1   0  0 row 5 1    0   1  0.    So the matrix that I want called deaths would sum row 1 and 4, row 2 and 5, to reflect the one and two years totala,   I use the following code that does not work:   deaths=j(3,1,0); do yr=1 to 3; deaths[yr]=sum(outcome[time[yr]=1,])); end; run; Does anyone have a suggestion basically for using a matrix to select specific rows from another matrix. Thanks ... View more