I am trying to multiply this two matrices. I want to delete the columns with zeros in INVERSCE

desireatem — Sat, 02 Feb 2013 03:06:24 GMT

I am tring to multiply this two matrices, I also want to delete all the cases where InverseC=0. How ever, it giving me their locations as a matrix not the matrix;

SurvivalM=J(nrow(survival1),1,1);

do i = 1 to n;

if censored=1 then SurvivalM=survival1; else if censored[1]=0 then SurvivalM=survival1; /*****Create a 1 by N -matrix of Survival ****/;

end;

print SurvivalM;

0.95
0.9
0.8735294
0.8470588
0.7941176
0.7411765
0.6882353
0.6352941
0.5823529
0.5294118
0.4764706
0.4235294
0.3705882
0.3176471
0.2647059
0.2316176
0.1985294
0.1323529
0.0661765
0

InverseC=J(nrow(survival1),1,1);

do i = 1 to n;

if censored=1 then InverseC=1/survival1; else if censored[1]=0 then InverseC=0; /*****survivalC is the imputed censored survival and set the real Survivalval to 1**/;

*InverseCC=J(nrow(survival1),1,1);

end;

print InverseC;

0
0
1.1447811
0
0
0
0
0
0
0
0
0
0
0
0
4.3174603
0
0
0
0

m=frequency[1];

*Big=J(nrow(DM),m,value);

t=(loc(InverseC^=0)); print t;

tt=t(t); print tt; THIS IS WRONG, SUPPOSE TO BE 1.14478 and 4.3174603 as in Inverce above not 3 and 16 which is the location.

tt 2 rows 1 col (numeric)

reset print;

Big=SurvivalM*t(tt);

print Big;

Re: I am trying to multiply this two matrices. I want to delete the columns with zeros in INVERSCE

Rick_SAS — Sat, 02 Feb 2013 22:20:08 GMT

s =InverseC;

print s;

topic Re: I am trying to multiply this two matrices. I want to delete the columns with zeros in INVERSCE in SAS/IML Software and Matrix Computations

I am trying to multiply this two matrices. I want to delete the columns with zeros in INVERSCE

Re: I am trying to multiply this two matrices. I want to delete the columns with zeros in INVERSCE