Hello programmers, I am trying to implement this piece of code from a SAS guide. I can't implement it as it's giving me error messages. Can anyone explain why it doesn't work? l=t(root(eps)); /* calculate cholesky root of cov matrix eps */ z=normal(j(1,n,seed)); /* generate n samplesize normals */ xx=l*z*v; /* multiply by cholesky root and variance */ tx=t(xx); do i=1 to &n ; Group[i] = round(ranuni(int(time()))); x[i] = rannor(int(time()))*2 ; do r=1 to &mm ; b0[r]=-.2-2.6*cos((r-&m)*3.14159/ 30)* / ); yy[i,r]=b0[r]*Group[i]+3.5*sin(2*3.14159*x[i]/5); end; end; yy=yy+tx; /*yy with multivariate normal error*/ Thanks ... View more

Hello programmers, I am using the free sas university edition online and i requested for the proc gplot but it says "the procedure can not be found". What could be the reason for this?   ... View more

Dear all,   I normally use the SAS software installed in our university computer but i am having to work remotely and therefore i am using the online free version from the sas website. I discovered that all the sas files (.sas) could not be opened in this online sas environment. However, excel, txt and csv files could open. Is there any reason for this? It seems strange that the sas online version at sas.com would not support SAS files. I hope to get your input about this.   Thanks! ... View more

Hello SAS users,   I am trying to add a level-1 predictor to my model and i am trying to allow the slopes of this predictor to vary across schools (ie random slopes). I have written three codes for this but i am confused at which one it is. As all three gave me outputs. Can anyone who is familiar with proc mixed help me out?  Thanks! proc mixed data=me method= reml covtest ; class school; model y = ses / s ddfm=bw cl; random intercept ses / subject=school g type=un s; run; OR proc mixed data=me method= reml covtest ; class school; model y = ses / s ddfm=bw cl; random intercept / subject=school g type=un s; run; OR proc mixed data=me method= reml covtest ; class school; model y = ses / s ddfm=bw cl; random ses / subject=school g type=un s; run; ... View more

Hello,   I am trying to find the mean of variables in an observation that has missing values.  for example, if  T1 T2 T3 are the variables, their mean would be (t1 +t2+t3)/3= T_mean. However, i discovered that SAS ouput a missing value for T_mean if any of the T1-T3 values are missing. My question is how do i make sas treat the missing as zero in order to compute the mean.           ... View more

Hello programmers,   I am trying to wrap my head around libref and library. Any help would be appreciated Libname nsch "C:\Users\Aba\Box\NSCH\nsch1617combined_drc"; Libname library "C:\Users\Aba\Box\NSCH\nsch1617combined_drc"; PROC FORMAT LIBRARY=LIBRARY; /*Topical*/ .The error message was that libref and library are the same physical address. Please in what formats should the libref and library be in?  ... View more