CODE DESIGN, MACROS, AND SUBROUTINES

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REWRITE 3*** Use the data created in program 0_inputs.sas ***;*** to calculate the returns to experience ***;libname dot “.”;/* Add a quartic experience term */data temp1 /view=temp1;set dot.inputs(where=(good=1));length x4 5;x4=x3*x;run;proc means data=dot.inputs data=temp1;run;proc reg data=dot.inputs(data=temp1);run;model y=x1 x2 x3 x4;Wednesday, August 21, 13
<strong>MACROS</strong>Enables you to delay resolution of a portion of your code.You can replace a hard-coded filename, variable, or section with dynamiccode that is generated at the time of executionSAS and Stata process macros similarly, but SAS passes your entireprogram through the macro pre-processor, while Stata operates line by line.Result: If there is an error, SAS will fail prior to processing data whileStata will run until the first macro failureStata uses macros in built in commands (ado files). Using global macroscan have unintended effects. You can unknowingly overwrite anexisting variable or use a macro variable created in another commandWednesday, August 21, 13
Page 2 and 3: CODE DESIGNDo not simply start writ
Page 4 and 5: CODE STYLEMake your code as transpa
Page 6 and 7: REWRITE 1*** Use the data created i
Page 10 and 11: SIMPLE EXAMPLESAS%let rhs_vars=x1 x
Page 12 and 13: WHY USE SUBROUTINES?Using a code li
Page 14 and 15: EXAMPLE: CPI MACRO*** Adjust earnin
Page 16 and 17: STATALinks to web tutorialshttp://w
Page 18: CONCLUSIONWrite code with a consist

CODE DESIGN, MACROS, AND SUBROUTINES

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