● STILTS – Command-line tools for table/VOTable manipulation ● TOPCAT VO features – VO features in the GUI tabular data exploration tool ● SPLAT-VO – SSAP functionality in GUI spectral analysis tool Starlink VO Applications Software http://www.starlink.ac.uk/
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STILTS – Command-line tools for table/VOTable manipulation TOPCAT VO features – VO features in the GUI tabular data exploration tool SPLAT-VO – SSAP functionality.
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● STILTS– Command-line tools for table/VOTable manipulation
● TOPCAT VO features– VO features in the GUI tabular data exploration tool
● SPLAT-VO– SSAP functionality in GUI spectral analysis tool
Starlink VO Applications Software
http://www.starlink.ac.uk/
STILTS
● Command-line tools for table manipulation● VOTable structure-sensitive tools
– votcopy: DATA encoding conversion– votlint: VOTable document validation
● Convert columns from sexagesimal to degreestpipe -ifmt csv acat.csv -addcol RA '“radiansToDegrees(hmsToRadians($1,$2,$3))”' -addcol DEC '“radiansToDegrees(dmsToRadians($4,$5,$6))”' -delcols '“$1,$2,$3,$4,$5,$6”'
● Calculate and display statistics on sample of large tabletpipe USNO-B.FITS -every 1000000 -stats
● Display the thousand highest redshifts in TOPCATtpipe 2QZ.fits.gz -keepcols “NAME RA DEC Z1” -sort Z1 -tail 1000 -topcat
tmatch
● ... maybe one day
TOPCAT
● View/analyse/edit/write tabular data– Manipulate table data and metadata
– Plot, match, sort, calculate, select, ...
– Powerful and extensible expression language
– Multi-format, including VOTable (all encodings) & SQL
– Large tables (10^6 rows x 10^2 columns)
http://www.starlink.ac.uk/topcat/
Tool for OPerations on Catalogues And Tables
TOPCAT VO features● Load/Save dialogues
– Filestore browser
– Cone search
– SIAP query
– Registry query
● Activation actions– Display images/spectra corresponding to table rows
Filestore Browser● Looks like standard file chooser
● Remote filespaces are available in the same way as local filesystem
● Log in/out to view remote filespaces
● Both load and save are available
● Pluggable framework for filespace implementations
– Currently MySpace and SRB supported
– Not hard to add new ones
● Available as separate library component for use in other applications
Cone Search● Get cone search services from registry
● Perform a query on one of the services returned
● Open results as a table
● SIAP and Registry queries work in a similar way
Activation actions● Can configure some action when table row is activated
● Activation performed by:
– clicking on row in table display
– clicking on point in plot
● Actions include:
– display cutout image from service (SoG)
– display spectrum from service (SPLAT)
– ... or anything you like
TOPCAT as service client● Query registry for SIAP/Cone search services
● Perform a query on one of the services returned
● Plot/view results and select a point/row
● Retrieve resulting data file and display image/spectrum
...but it's a bit clunky
Starlink SPLAT for the VO
SPLAT features
• Not just a VO client, also an analysis tool with extensive graphics features, printing, zooming, scrolling etc.
• Source code available under GPL.
• Available as a desktop or webstart application (Linux, Windows, Mac OS X and Solaris).
• http://www.starlink.ac.uk/splat-vo
New SSAP Browser
● Various interactive features: object name lookup, RA and Dec in natural units (hh/ddd:mm:ss.s). Simple double click to load a spectrum.
Double click download
Starlink AST• All coordinate and units transforms provided by AST.
• Spectral coordinates cover FITS-WCS paper III: Wavelength, Frequency, Energy and Velocity
• Flux units, based only on interpretation of standard FITS-WCS paper I descriptions: