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Last change
on this file since 63 was 63, checked in by mcalabre, 20 years ago |
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sdreader.gettable() renamed to sdreader.getdata().
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Property svn:eol-style
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Property svn:keywords
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Author Date Id Revision
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File size:
1.5 KB
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| 1 | #import atnf_sd module
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| 2 | from atnf_sd import *
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| 3 | # create a reader
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| 4 | r = sdreader()
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| 5 | # open an RPFITS file
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| 6 | r.open('/u/mmarquar/zorro/singledish/data/2001-09-01_0332_P363.rpf')
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| 7 | # create a vector with numbers [0..109]
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| 8 | integrations = range(110)
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| 9 | r.read(integrations)
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| 10 | # get the data out of the reader
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| 11 | scans = r.getdata()
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| 12 | # close the reader
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| 13 | r = None
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| 14 |
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| 15 | # Test sdwriter.
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| 16 | print 'Begin sdwriter tests...'
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| 17 | # Create an MS2 writer.
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| 18 | w = sdwriter('MS2')
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| 19 | # Change to SDFITS output format (the default).
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| 20 | w.setformat()
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| 21 | # Write out the spectra.
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| 22 | w.write(scans, 'test_SDWriter.sdfits')
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| 23 |
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| 24 | # print a short summary of the data
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| 25 | scans.summary()
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| 26 | # get the scan with the number '1'
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| 27 | scan = scans.getscan(1)
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| 28 | # get the scan with the number '1'
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| 29 | ref = scans.getscan(2)
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| 30 | # close the data table
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| 31 | scans = None
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| 32 | # open the math server
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| 33 | m = sdmath()
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| 34 | # average the "on" scan
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| 35 | scanav = m.average(scan)
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| 36 | # get rid of the original scan
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| 37 | scan = None
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| 38 | # print a summary of the scan
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| 39 | scanav.summary()
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| 40 | # average the "off" scan
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| 41 | refav = m.average(ref)
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| 42 | # get rid of the original scan
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| 43 | ref = None
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| 44 | # print a summary of the scan
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| 45 | refav.summary()
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| 46 | # form the quotione spectrum
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| 47 | quot = m.quotient(scanav,refav)
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| 48 | # set the cursor to polarisation 0
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| 49 | quot.setpol(0)
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| 50 | # get the spectrum for polarisation 0
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| 51 | v0 = quot.getspectrum()
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| 52 | #print the first ten channel
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| 53 | print v0[0:10]
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| 54 | # set the cursor to polarisation 0
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| 55 | quot.setpol(1)
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| 56 | # get the spectrum for polarisation 0
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| 57 | v1 = quot.getspectrum()
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| 58 | #print the first ten channel
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| 59 | print v1[0:10]
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| 60 | # write it to disk for further use
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| 61 | quot.makepersistent('/tmp/myfirstquotient.tbl')
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