Description

While ChIPS and Sherpa have their own languages which can be used to read in data, plot graphs, or fit data, they do not contain a general-purpose language which can be used to write macros or manipulate data. This capability is instead provided by the S-Lang language, a popular interpreted language created by John Davis of the Center for Space Research at MIT. For a list of topics related to S-Lang and its use in CIAO, type "about slang" (or "ahelp -k slang") and "ahelp -c slang".

• See "ahelp overview" for an overview of the S-Lang language
• See "ahelp slangrtl" for a list of functions in the S-Lang Run-Time librart
• See "ahelp chips" for specific information on using S-Lang in ChIPS.
• See "ahelp sherpa" for specific information on using S-Lang in Sherpa. The use of S-Lang to create models for Sherpa is described in "ahelp slang usermodel".
• See "ahelp variables" for the use of variables in S-Lang.
• See "ahelp math" for mathematical operations available in S-Lang.
• See "ahelp tips" for S-Lang tips and examples.
• See "ahelp varmm" for a discussion of the Variables, Math and Macros library.
• See "ahelp varmmrl" for the information on the Varmm readline module.
• See "ahelp caldb caldb" for a discussion of the S-Lang version of the CALDB library.
• See "ahelp paramio" for a discussion of the S-Lang version of the parmaeter library.
• See "ahelp group" for a discussion of the S-Lang version of the grouping library.
• See "ahelp stackio" for a discussion of the S-Lang version of the stack library.
• See "ahelp pixlib" for a discussion of the S-Lang version of the pixlib library.

Notes

• The Grating User Interactive Data Extension (GUIDE) derives most of its power from the S-Lang language; the scripts it uses are available in the $ASCDS_INSTALL/contrib/share/slsh/local-packages/ directory.
• Additional S-Lang scripts are provided on the CIAO download page.