TraceOn (Built-in Mathematica Symbol)

TraceOn is an option for Trace and related functions which specifies when tracing should be switched on.

Clean Up Data Imported from a ZIP File (Mathematica How To)

In addition to importing ZIP files stored on your machine, Mathematica can also import ZIP files directly from a URL. In most cases, processing data in ZIP files is ...

Create and Use Rules (Mathematica How To)

Transformation rules in Mathematica let you set local values for symbols, functions, and all other types of expressions. Using rules provides a powerful and extensible method ...

StringReplaceList (Built-in Mathematica Symbol)

StringReplaceList["string", s -> sp] or StringReplaceList["string", {s_1 -> sp_1, s_2 -> sp_2, ...}] gives a list of the strings obtained by replacing each individual ...

Low-Level System Spelunking (Mathematica Guide)

Mathematica is a large and complex software system. Although strongly not supported for production purposes, it is sometimes instructive to "spelunk" in the system, looking ...

ReplacePart (Built-in Mathematica Symbol)

ReplacePart[expr, i -> new] yields an expression in which the i\[Null]\[Null]^th part of expr is replaced by new. ReplacePart[expr, {i_1 -> new_1, i_2 -> new_2, ...}] ...

Symbol (Built-in Mathematica Symbol)

Symbol["name"] refers to a symbol with the specified name.

Clean Up Data Imported from a Website (Mathematica How To)

The connectivity and data-processing capabilities of Mathematica make it ideal for importing and analyzing data displayed on a website. In most cases, this is relatively ...

Parts of Matrices (Mathematica Guide)

Mathematica provides several convenient methods for extracting and manipulating parts of matrices. The flexible [[ ]] (Part) and ;; (Span) syntaxes provide compact yet ...

ExtractArchive (Built-in Mathematica Symbol)

ExtractArchive[file] expands an archive file, saving its content into the current directory.ExtractArchive[file, dir] saves the content of an archive file into directory ...