NAME

       stilts-calc - Evaluates expressions

SYNOPSIS

       stilts calc [expression=<expr>] [table=<table>]

DESCRIPTION

       calc  is  a  very  simple  utility for evaluating expressions. It uses the same expression
       evaluator as is used in tpipe and the other generic table tasks for things  like  creating
       new  columns,  so it can be used as a quick test to see what expressions work, or in order
       to evaluate expressions using the various algebraic functions documented in SUN/256. Since
       usually  no  table is involved, you can't refer to column names in the expressions. It has
       one mandatory parameter, the expression to evaluate, and writes the result to the screen.

OPTIONS

       expression=<expr>
              An expression to evaluate. The functions in SUN/256 can be used.

       table=<table>
              A table which provides the context  within  which  expression  is  evaluated.  This
              parameter  is  optional,  and  will usually not be required; its only purpose is to
              allow use of constant expressions (table parameters)  associated  with  the  table.
              These  can  be referenced using identifiers of the form param$*, ucd$* or utype$* -
              see SUN/256 for more detail.

SEE ALSO

       stilts(1)

       If the package stilts-doc is installed, the full documentation  SUN/256  is  available  in
       HTML format:
       file:///usr/share/doc/stilts/sun256/index.html

VERSION

       STILTS version 3.4.3-debian

       This  is  the  Debian  version  of Stilts, which lack the support of some file formats and
       network protocols. For differences see
       file:///usr/share/doc/stilts/README.Debian

AUTHOR

       Mark Taylor (Bristol University)

                                             Mar 2017                              STILTS-CALC(1)