This discussion assumes you have a basic understanding of Markdown for document formatting, Rmarkdown to include executable code in a document, and SAS to write the code.
SASmarkdown defines six knitr engines, to return different combinations of SAS code, SAS listing output, SAS HTML output, and SAS log output for use in your document.
SASmarkdown also defines several knitr chunk (code block) options for working with SAS output.
The details depend on your operating system, the version of SAS, and whether or not you have SAS installed in a default location.
```{r setup, message=FALSE}
library(SASmarkdown)
```This defines six knitr engines
These are ordinarily used in pairs, to give you access to the code, log, and output format you prefer.
If SAS is not found, you will have to define the engine path and any engine options in your document. For example
```{r enginepath}
saspath <- "C:/Program Files/SASHome/SASFoundation/9.4/sas.exe"
sasopts <- "-nosplash -ls 75" # '-nosplash' fails in some unix terminals
knitr::opts_chunk$set(engine.path=list(sas=saspath, saslog=saspath),
engine.opts=list(sas=sasopts, saslog=sasopts),
comment=NA)
```A simple code chunk in your document might look like:
```{sas example1}
proc means data=sashelp.class (keep = age);
run;
```And in your document this would produce:
proc means data=sashelp.class (keep = age);
run; The MEANS Procedure
Analysis Variable : Age
N Mean Std Dev Minimum Maximum
------------------------------------------------------------------
19 13.3157895 1.4926722 11.0000000 16.0000000
------------------------------------------------------------------HTML gives you a method of embedding SAS tables and graphs directly in your document.
Switch the engine specification to sashtml. This
example suppresses the code echo with the echo=FALSE chunk
option.
```{sashtml example2, echo=FALSE}
proc means data=sashelp.class (keep = age);
run;
```If you use the sashtml engine, nothing special is
required to include SAS ODS graphics.
```{sashtml example3}
proc corr data=sashelp.class nosimple plots=matrix;
run;
```Producing:
proc corr data=sashelp.class nosimple plots=matrix;
run;We can repeat the first example, showing the SAS log instead of the SAS code by using the saslog engine.
```{saslog example4}
```Producing:
2 proc means data=sashelp.class (keep = age);
3 run;
NOTE: There were 19 observations read from the data set SASHELP.CLASS.
NOTE: The PROCEDURE MEANS printed page 1.
NOTE: PROCEDURE MEANS used (Total process time):
real time 0.08 seconds
cpu time 0.07 seconds
The MEANS Procedure
Analysis Variable : Age
N Mean Std Dev Minimum Maximum
------------------------------------------------------------------
19 13.3157895 1.4926722 11.0000000 16.0000000
------------------------------------------------------------------Finally, you can have both the SAS log and the HTML output with the sashtmllog engine.
```{sashtmllog example1}
```Producing:
6 proc means data=sashelp.class (keep = age);
7 run;
NOTE: There were 19 observations read from the data set SASHELP.CLASS.
NOTE: PROCEDURE MEANS used (Total process time):
real time 0.05 seconds
cpu time 0.03 seconds