Dear SIr,      Thanks for reply.   I am doing comparison of five samples based on variables (having wide variation in numerical value and different in terms of units). Using only Score and Pattern plot for comparison. The total programme I followed stated below.    ****************************************************************************************************************************** data acidification; input ExperimentNumber $1-5 LagPhase TimeCurdFormation pH_FourHour pH_SixteenHour RateMaxAcidification TimeMaxAcidification pH_MaxAcidification TimeRangeFastAcidification pHRangeFastAcidification ; datalines; Cntrl 48 253 4.729 4.185 -0.014 106 5.484 72 0.785 Ex-18 39 205 4.618 3.979 -0.018 83 5.617 68 0.948 Ex-20 39 267 4.762 4.127 -0.018 72 5.788 52 0.992 Ex-21 56 305 4.860 4.149 -0.017 91 5.808 58 0.682 Ex-22 42 302 4.837 4.155 -0.016 77 5.881 71 0.793 ; proc print data=acidification; ods graphics on; proc princomp data=acidification Plots (ncomp=2)=pattern; run; ods graphics off; ods graphics on; proc princomp data=acidification plots (ncomp=2)=score; id ExperimentNumber; run; ods graphics off;   ********************************************************************************************************************************************************   It is not possible to drop variables for me.   VARCOMP - procedures will alow to have plots like score/pattern?   Regards Sougata Das ... View more