I am using this series of commands and need to control the vertical axes of the 3 histograms being created for comparison purposes in a publication: PROC UNIVARIATE NORMAL PLOT data=l1.longheat_L_1111;; var pctmethyl; HISTOGRAM pctmethyl/midpoints = 0.0 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.2 0.22 0.24 0.26 0.28 0.30 0.32 0.34 0.36 0.38 0.4 0.42 0.44 0.46 0.48 0.50 0.52 0.54 0.56 0.58 0.6 0.62 0.64 0.66 0.68 0.70 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.90 0.92 0.94 0.96 0.98 1.0 vaxislabel='Number of Cytosine Nucleotides Showing Methylation in L1-LCR Amplicon' vscale=percent vaxis=1 to 100 nohlabel ctext = blue; TITLE "3'L1-5'LCR1"; FOOTNOTE 'Percent Methylation'; run; I tried using the vaxis option and have not had any luck. For one data set, approximately ~75% for the data are a particular value and for the other two, >80% are similarly one outcome value. For two, the vertical axes are 0-100, for one 0-80. Thanks for your help ... View more