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XMM-Newton Science Analysis System


deceit (deceit-1.15.2) [xmmsas_20030110_1802-5.4.1]

Meta Index / Home Page / Description / A few examples

A simple dataset

The following template describes a dataset with two dataset attributes and no blocks.

# --> begin
# a comment line. Blank lines, like the next one, are ignored.

dataset "simple.ds"
<
  attribute "ATT_STR" string "hello" "a familiar greeting" ""
  attribute "PI" real 3.1415 "a familiar number" "rad"
>
# --> end

The following syntax rules apply:

• Comment lines start with a # in the first column.

• White space (space, tabs, carriage return and new line characters) and comments are ignored by the interpreter.

• The first deceit command should be dataset, followed by the dataset name (a string).

• All strings are enclosed in double quotes.

• The dataset description is enclosed in $<$ ...$>$.

• Attribute specifications have the following syntax:

  attribute name type value label unit

  where

  • name is the attribute name (a string).

  • type is the data type of the attribute. It may be one of string real int bool.

  • value is the attribute value. It may be one a quoted string, a real, an integer, or a boolean (1, true, 0, false).

  • label is a comment string.

  • unit is a unit string.

  All items are mandatory.