请教一个Proc sgplot 作图的问题，谢谢！

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如果我有个程序是这样的：
proc sgplot data=aa;
by year;
scatter x=xx y=yy/group=zz;
run;

请问我如果设置group的颜色，比如对于每个Year的图， group=1 的时候是红色， group=2的时候是蓝色。
如果不自己设置颜色，对于不同年份而言，有时候group=1 的时候是红色，有时候group=2 的时候是红色。自己倒腾了好长时间也没有弄出来，特来请教。谢谢了。

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关键词：sgplot gplot plot GPL ROC 程序

继续求大牛们帮忙

First of all, you need to tell the colors you need in your plot. More than that, For your case, BY statement may complicate the situation since each BY may not have equal levels of group variable. I had an example in my blog. You can either google %modStyle or visit my blog to figure out your question.

JingJu

jingju11 发表于 2015-5-4 13:14
First of all, you need to tell the colors you need in your plot. More than that, For your case, BY s ...

to followup, I have made my blog updated on this thread

JingJu

jingju11 发表于 2015-5-5 00:24
to followup, I have made my blog updated on this thread

JingJu

Thank you very much. I will let you know whether I can get it or not after I read your post.

To Jingju,

Your code meets my needs. Thank you so much.