When you use the SYMPUT routine to create a macro variable in a DATA step, the macro variable isnot actually created and assigned a valueuntilthe DATA step isexecuted. options symbolgen pagesize=30;%let crsnum=3; data revenue;setsasuser.allend=final;wherecourse_number=&crsnum; total+1;if...
However, macro variables and the macros themselves do not have to be exclusively referenced from within the macro facility. The SAS(R) data step can create, resolve and execute macros using 2 functions: SYMGET and RESOLVE and 2 routines: CALL SYMPUT and CALL EXECUTE.Lawrence Heaton-Wright...
Creating Data-Driven Macro Variables with PROC SQL: INTO Display Macro Variable Values %put when storing a value in a single macro variable, PROC SQL preserves leading or trailing blanks, which can be removed by using TRIMMED in the INTO clause. 如果想被分隔符隔开 在后面加 separated by... ...
creates a macro variable in the symbol table and assigns a value to the variable changes the value of an existing macro variable in the symbol table looks up an existing macro variable in the symbol ta...
如果变量比较多,考虑用macro来简化每个variable derivation。 模板化code,以不变应万变。 还有其他对小数位数的处理方式:例如,按每一个parameter分别处理;根据值的大小范围来决定(例如,如果数据<1,保留两位小数;如果数据<10,保留一位小数,如果10-100之间,不保留小数等等)...
问在SAS中获取多个变量的中位数和第95个百分位数统计信息EN在C语言编程中，获取数组的中位数是一项...
SAS macro variables 1. enable you to substitute text in your SAS programs(替代作用,和c++的 #define 差不多) 2. When you reference a macro variable in a SAS pr..
<REPLACE>: overwrites an existing SAS data set. 如果没有replace,则默认不会重写现有的文件。 1. importing an Excel File with an XLSX Extension sheet: to import specific worksheets from an Excel workbook getname = yes: to general variable names from thefirst row of data (如果是NO 现实的就是...
宏变量(macro variable)类似与标准 数据变量(data variable),不同之处在于:宏变量不属于data set,且,宏变量的值只能是 character。 宏变量的值可以是3种:a variable name, a numeral, any text( 任何你想在程序中替换的文本。) 宏:一个宏,是SAS Program中的一大段代码,可以包含复杂的逻辑,包含:完整的DATA步...
2. When you reference a macro variable in a SAS program, SAS replaces the reference with the text value that has been assigned to that macro variable. By substituting text into programs, SAS macro variables make your programs more reusable and dynamic 3. 判断宏变量定义的结束是以分号为分...