Thanks all for the responds yesterday. I manage to get it working with the code below. As can be seen, I had many variables that I put together and then indicated in the model to sqr and log all.  Once this is set, I believe any time I write in a model statement "sqrN or logN", it will automatically use the log of the N value?   data Nconc_maize; input Trt plt block mgt qual quan N P K Ca Mg; sqrN = sqrt(N); logN = log10(N); sqrP = sqrt(P); logP = log10(P); sqrK = sqrt(K); logK = log10(K); sqrCa = sqrt(Ca); logCa = log10(Ca); sqrMg = sqrt(Mg); logMg = log10(Mg); datalines; 1 4 1 1 1 2 2.83 2.77 17.37 7.69 104.26 1 29 2 1 1 2 2.10 2.28 29.03 6.13 69.47 ; run ... View more

Thanks for the quick responds. My data is a little bit complex so will explian little more. From the data below (0only a piece of the full data), I need to check if the data is normally distribute, hence I had to manually add a row for sqr and log. In the model statement, when I use the manually created SQR_Kconc or  LOG_Kconc, it works. But I want a way where I only supply the main data, and if there is the need to sqr, I just use the script.   data Nconc_S2; input Trt plt block mgt qual quan Kconc SQR_Kconc LOG_Kconc; datalines; 1 4 1 1 1 2 80.006 8.945 1.903 1 29 2 1 1 2 91.588 9.570 1.962 1 39 3 1 1 2 76.645 8.755 1.884 1 61 4 1 1 2 85.700 9.257 1.933 2 15 1 1 2 2 106.488 10.319 2.027 2 21 2 1 2 2 104.266 10.211 2.018 2 48 3 1 2 2 104.632 10.229 2.020 2 66 4 1 2 2 99.191 9.959 1.996 3 5 1 1 1 1 65.659 8.103 1.817 3 34 2 1 1 1 85.866 9.266 1.934 3 41 3 1 1 1 91.500 9.566 1.961 3 71 4 1 1 1 91.621 9.572 1.962 ; run;   *testing normility; proc mixed data=Nconc_S2; class block mgt qual quan; model Kconc=block mgt qual quan mgt*qual mgt*quan qual*quan mgt*qual*quan/ddfm=KR OUTP=r residual; random block*qual*quan; run; ods graphics on; proc univariate data=r normal plot; var studentresid; qqplot studentresid/normal; run; Proc plot data=r; plot studentresid*pred=mgt; format mgt mgtgrp. qual qualgrp. quan quangrp. ; run;     ... View more

Disconnecting the internet and running the programme still didn't help.    Does anyone think if uninstall the whole setup and install it again, it will help. In that case, how can I save my files that I have already on the programme.   Regards,   Edmund ... View more

Thank you for the responds. Unfortunately, it is still not working.  I don't know if there are other options.   Edmund   ... View more