[問題] SAS proc MDS的問題

[maumausam (毛絨絨的爸爸)]

各位前輩好,想請教前輩一個proc mds的問題!
最近我自己用比小資料,excel匯入SAS練習MDS,
數據如下:

age     a15     a20     a25     a30     a35     a40     a45     a50     a55     a60     a65     a70     a75     a80     a85up
15-19   0.0%    33.3%   26.2%   26.4%   24.8%   25.5%   21.5%   36.1%   47.2%   52.4%   64.0%   52.3%   72.5%   69.6%   86.3%
20-24   33.3%   0.0%    20.5%   20.3%   22.2%   21.4%   25.4%   13.8%   33.4%   40.4%   54.7%   40.4%   64.4%   61.2%   79.6%
25-29   25.4%   20.5%   0.0%    3.1%    8.5%    6.1%    15.0%   24.8%   39.2%   45.4%   58.4%   45.3%   67.6%   64.5%   82.2%
30-34   26.4%   20.3%   3.1%    0.0%    9.1%    6.9%    15.3%   24.6%   39.1%   45.3%   58.3%   45.2%   67.6%   64.4%   82.2%
35-39   24.8%   22.2%   8.5%    9.1%    0.0%    5.9%    12.3%   26.2%   40.1%   46.2%   59.0%   46.1%   68.2%   65.1%   82.7%
40-44   25.5%   21.4%   6.1%    6.9%    5.9%    0.0%    13.7%   25.5%   39.7%   45.8%   58.7%   45.7%   67.9%   64.8%   82.5%
45-49   21.5%   25.4%   15.0%   15.3%   12.3%   13.7%   0.0%    28.9%   42.0%   47.8%   60.3%   47.7%   69.3%   66.2%   83.6%
50-55   36.1%   13.8%   24.8%   24.6%   26.2%   25.5%   28.9%   0.0%    30.4%   38.0%   52.9%   37.9%   62.9%   59.6%   78.4%
55-59   47.2%   33.4%   39.2%   39.1%   40.1%   39.7%   42.0%   30.4%   0.0%    22.8%   43.2%   22.6%   55.1%   51.2%   72.3%
60-64   52.4%   40.4%   45.4%   45.3%   46.2%   45.8%   47.8%   38.0%   22.8%   0.0%    36.8%   2.7%    50.2%   45.9%   68.6%
65-59   64.0%   54.7%   58.4%   58.3%   59.0%   58.7%   60.3%   52.9%   43.2%   36.8%   0.0%    36.9%   34.1%   27.4%   57.9%
70-74   52.3%   40.4%   45.3%   45.2%   46.1%   45.7%   47.7%   37.9%   22.6%   2.7%    36.9%   0.0%    50.2%   46.0%   68.7%
75-79   72.5%   64.4%   67.6%   67.6%   68.2%   67.9%   69.3%   62.9%   55.1%   50.2%   34.1%   50.2%   0.0%    20.3%   46.8%
80-84   69.6%   61.2%   64.5%   64.4%   65.1%   64.8%   66.2%   59.6%   51.2%   45.9%   27.4%   46.0%   20.3%   0.0%    51.0%
85+     86.3%   79.6%   82.2%   82.2%   82.7%   82.5%   83.6%   78.4%   72.3%   68.6%   57.9%   68.7%   46.8%   51.0%   0.0%

這是類似歐幾里得距離,以下為我寫如語法:

proc cluster data=male method=ward outtree=Tree noprint;
id age;
run;
axis1 order=(0 to 1 by 0.5);

proc tree data=Tree ;
height _rsq_;
id age;
title "1974 male";
run;

proc mds data=male level=absolute out=out noprint ;
id age;
title "1974 male";
run;

symbol    value=dot ;

proc gplot data=out  ;
         plot dim2*dim1=age   ;
         title "1974 male";
                 run ;
 goption reset=symbol ;

可是是可以跑出MDS圖形,但log中有一句話:
NOTE: 1 observation(s) contained a MISSING value for the Dim2 * Dim1 = age request.
我不懂,
而且GPLOT圖會有一個顏色顯示在標題,但label是空的,圖裡也沒有該顏色的dot
我在想是不是跟log理的note有關!

所以我想請教前輩,這個原因,真的謝謝

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