Developer Infrastructure: Table and Image Package tip, Science Tools Application st_app

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Developer InfrastructureTable and Image Package
(tip),Science Tools Application (st_app)

• James Peachey, HEASARC

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What is TIP?

• File-format independent (FITS, Root)
• STL friendly, row oriented (iterators, functors,
  selection of fields)
• Table access
• Image access

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Tabular Data Extension
Header Keyword 1 Value1 Keyword 2 Value
2 ... Keyword K Value K
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TIP Table Main Classes
Header void getKeyword(T ) const void
setKeyword(const T )
Extension Header getHeader()
Table Iterator begin() Iterator end()
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Client Code

• http//www-glast.slac.stanford.edu/software/scienc
  etools/development
• Click frame/non frame -gt Doxygen for tip
• See examples drawn from tips sample.cxx program.
• Highlights
• Factory class for creating Tables
• Keyword read access
• Table cell read access
• Keyword and cell modify access

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How Does TableIterator Work?

• Dereferences to TableRecord type
• TableRecord has a collection of TableCell
  objects
• Client determines which cells are used in
  computation
• TableCell objects query the table for each value

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Status of TIP
Working
Needs Work

• FITS table cell r/w
• Root TTree cell r/w
• FITS keyword r/w
• Table data lookup by name
• Bidirectional iterator

• Image handling
• Root keywords?
• Details such as null values, units etc.
• Read-only table access
• Browsable tables
• Support for functors and random access iterators
• File creation (done)
• Memory resident Tables
• Adding fields (columns)

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What is st_app?

• Standard main and lightweight support for
  application development
• A place where global application features can be
  added/changed without changing individual
  applications
• Top-level rationalized exception handling
• http//www-glast.slac.stanford.edu/software/scienc
  etools/development
• Click frame/non-frame -gt Doxygen for st_app