proc iml;
use kaplan;
read all var{time Survival survival1};
close;
Survival1 = DM[,3];Survival = DM[,2]; time = DM[,1];
n = nrow(DM);
segment = J(nrow(DM),1,1); print segment;
do i = 2 to nrow(DM);
SS=survival1-survival1[i-1];
TT=time[i+1]-time;
DX = SS*TT;
end;
create kaplann var{time Survival survival1 TT DX DX};
append;
quit;
ERROR: (execution) Matrix has not been set to a value.
operation : [ at line 1545 column 34
operands : DM, , *LIT1003
DM 0 row 0 col (type ?, size 0)
*LIT1003 1 row 1 col (numeric)
2
statement : ASSIGN at line 1545 column 21
ERROR: (execution) Matrix has not been set to a value.
operation : [ at line 1545 column 49
operands : DM, , *LIT1004
DM 0 row 0 col (type ?, size 0)
*LIT1004 1 row 1 col (numeric)
1
statement : ASSIGN at line 1545 column 40
ERROR: (execution) Invalid operand to operation.
operation : J at line 1547 column 12
operands : _TEM1001, *LIT1005, *LIT1006
_TEM1001 1 row 1 col (numeric)
0
*LIT1005 1 row 1 col (numeric)
1
*LIT1006 1 row 1 col (numeric)
1
statement : ASSIGN at line 1547 column 1
ERROR: Matrix segment has not been set to a value.
statement : PRINT at line 1547 column 28