Getting Started

Documentation

Glish

Learn More

Programming

Contact Us

Version 1.9 Build 1556

News	FAQ
Search	Home

General capabilities

• Say what AIPS++ is:
  • Astronomical Information Processing System
  • C++, Scripting, GUIs, libraries, toolkits, and applications
  • Designed by a team of astronomers and programmers
  • Developed by an international consortium of radio observatories
• Start aips++
• Talk about logger windows, clients.
  • Show options on File and Options menu.
  • Show how help works

    help()
    help('aips')
    help('display')
    web()
    

  • Show about AIPS++ window, talk about configuration of AIPS++ (aipsrc variables)
  • Show Object Catalog GUI. Talk about objects in AIPS++.
• Talk about Glish. Show capabilities of Glish:
  • Simple vectors:

    a:=1:1000
    b:=sin(pi*(a/360)^2)
    print a[1:10] , b[1:10]
    

  • Plotting:

    mypg:=pgplotter()
    mypg.plotxy(a, b, "Chirp")
    

  • Servers and FFTs. Do a help first:

    - help('*fft*')      
    
    There are 10 matches. Please choose from:
      aips.mathematics.fftserverdemo
      aips.mathematics.fftservertest
      aips.mathematics.fftserver
      aips.mathematics.fftserver.complexfft
      aips.mathematics.fftserver.realtocomplexfft
      aips.mathematics.fftserver.convolve
      aips.mathematics.fftserver.crosscorr
      aips.mathematics.fftserver.autocorr
      aips.mathematics.fftserver.shift
      synthesis.synthesisdos.imagesolver.setfft
    F 
    - help('*fftserver')
    
     fftserver -- Object  -- aips.mathematics
    
      FFTs and related operations
    
     Methods
       complexfft   Full complex-to-complex in-place FFT of an array
       realtocomplexfft     Real to Complex FFT of an array
       convolve     Convolve a model with a psf
       crosscorr    Cross-correlate two real arrays
       autocorr     Auto-correlate an array
       shift        Shift an array some number of pixels with an FFT
    
    You may find more information in the on-line documentation available
    via your web browser.  Type the command
    
       web()
    
    to view more about aips.mathematics.fftserver.
    
    F 
    - web()
    

    Now use it:

    myfft:=fftserver()
    c:=myfft.realtocomplexfft(b)
    mypg.clear()
    mypg.plotxy(a, abs(c), "FT of Chirp")
    

  • Point out that myfft and mypg show up in the Object Catalog. Use the Object Catalog to delete myfft, since we no longer need it. Zoom on plot to show detail.
  • Talk about the plotter. Show the plotting capabilities given by the PGPLOT tk widget (courtesy of Martin Shepherd and Tim Pearson!) as bound to Glish. To do this, go to the menu of the plotter and under Options, use the Add Commands option. Scroll until you find demo, then select it and go.
  • Aipsview. Make and display an array:

    a:=array(1:1000, 100, 100)
    dd.array(a)