Question

我试图绘制两组计算并随着时间的推移进行比较。＆＃34;队列＆＃34;从原始表中的coh_asof_yyyymm派生的变量以数字格式存储在数据集中（2010年3月为201003）。现在，当我使用proc sgplot绘制它们时，四分之三的数据被挤在一起。如何更改此变量的格式以便产生x轴应该以间隔为单位的输出？

options nofmterr;
libname backtest "/retail/mortgage/consumer/new"; 

proc sql;
create table frst_cur as
select
coh_asof_yyyymm as cohort,
sum(annual_default_occurrence* wt)/sum(wt) as dr_ct,
sum(ScorePIT_PD_2013 * wt)/sum(wt) as pd_ct_pit,
sum(ScoreTTC_PD_2013 * wt)/sum(wt) as pd_ct_ttc
from backtest.sample_frst_cur_201312bkts
group by 1;
quit;

proc sgplot data = frst_cur;
    series x = cohort y = pd_ct_pit;
    series x = cohort y = pd_ct_ttc;
    format cohort yyyyqc.;
    xaxis label = 'Cohort Date';
    yaxis label = 'Defaults';
    title 'First Mortgage Current';
run;

Answer 1

如果我说得对，我认为你的日期是一个数字而不是SAS日期。这并不罕见，人们将日期作为整数存储在他们的RDBMS表中，当SAS从表中导入数据时，它假定它是整数而不是日期。查看以下解决方案代码以供参考。

data testing_date_integer;
infile datalines missover;
input int_date 8.;
      /* creating another variable which would be a SAS date, based on int_date.
         we would be converting the integer date to charater and then append 
         day (01) to the charater and read using YYMMDD8. informat for SAS 
         to store the character as date
      */
      sas_date=input(cats(put(int_date,8.),'01'),yymmdd8.);

format sas_date YYQ8.;
datalines4;
200008
200009
200010
200011
200012
200101
200102
200103
200104
200105
200106
;;;;
run;
proc print data=testing_date_integer;run;

如果以上代码显示并解决了您的问题，那么我建议您更新PROC SQL代码

proc sql;
create table frst_cur as
select
input(cats(put(coh_asof_yyyymm ,8.),'01'),yymmdd8.) as cohort,
.
.
.

此外，我建议更新PROC SGPLOT

中的同类群组的格式声明

proc sgplot data = frst_cur;
.
.
    format cohort yyq8.;

希望这能解决你的问题。

Answer 2

使用YYMMn6. informat

data HAVE;
input DATE YYMMn6.;
format date YYQ8.;
datalines;
200008
200009
200010
200011
200012
200101
200102
200103
200104
200105
200106
;
run;
Proc Print Data=HAVE noobs; Run;

data HAVE2;
input coh_asof_yyyymm 8.;
datalines;
200008
200009
200010
200011
200012
200101
200102
200103
200104
200105
200106
;
run;

proc sql;
create table frst_cur as
select
 input(put(coh_asof_yyyymm,6.),YYMMn6.) as cohort format=YYQ8.
From HAVE2;
Quit;

数字变量到字符变量转换

2 个答案: