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 = 3 to nrow(DM);
if Survival1=Survival
else if Survival1<Survival
end;
do i = 2 to nrow(DM);
if time=time
else if time<time
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 1985 column 16
operands : DM, , *LIT1002
DM 0 row 0 col (type ?, size 0)
*LIT1002 1 row 1 col (numeric)
3
statement : ASSIGN at line 1985 column 2
ERROR: (execution) Matrix has not been set to a value.
operation : [ at line 1985 column 35
operands : DM, , *LIT1003
DM 0 row 0 col (type ?, size 0)
*LIT1003 1 row 1 col (numeric)
2
statement : ASSIGN at line 1985 column 22
ERROR: (execution) Matrix has not been set to a value.
operation : [ at line 1985 column 50
operands : DM, , *LIT1004
DM 0 row 0 col (type ?, size 0)
*LIT1004 1 row 1 col (numeric)
1
statement : ASSIGN at line 1985 column 41
ERROR: (execution) Invalid operand to operation.
operation : J at line 1988 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 1988 column 1
ERROR: Matrix segment has not been set to a value.
statement : PRINT at line 1988 column 28
WARNING: Variable DX already exists on file WORK.KAPLANN.
proc iml;
use kaplan;
read all var{TIME SURVIVAL SURVIVAL1} into DM;
close;
SURVIVAL1 = DM[,3]; SURVIVAL = DM[,2]; TIME = DM[,1];
n = nrow(DM);
segment = J(nrow(DM),1,1); *print segment;
SS=J(nrow(survival1),1,1);
do i = 1 to n ;
if i=n then SS
else if i<n then SS=SURVIVAL1-SURVIVAL1[i+1];
end;
TT=J(nrow(time),1,1);
do i = 1 to n;
if i = n then TT
else if i < n then TT=time[i+1]-time;
end;
create kaplann var{time Survival survival1 SS TT };
append;
quit;
proc print data=kaplann;
run;
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