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