[932] | 1 | from asap._asap import selector as _selector |
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| 2 | class selector(_selector): |
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| 3 | def __init(self): |
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| 4 | _selector.__init__(self) |
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| 5 | |
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| 6 | def reset(self): |
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| 7 | """ |
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| 8 | Unset all selections. |
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| 9 | """ |
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| 10 | self._reset() |
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| 11 | |
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| 12 | |
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| 13 | def set_polarisations(self, pols=[]): |
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| 14 | """ |
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| 15 | Set the polarisations to be selected in the scantable. |
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| 16 | Parameters: |
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| 17 | pols: a list of integers of 0-3, or strings, e.g ["I","Q"]. |
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| 18 | Default [] is no selection |
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| 19 | Example: |
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| 20 | sel = selector() |
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| 21 | # These are equivalent if data is 'linear' |
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| 22 | sel.set_polarisations(["XX","Re(XY)"]) |
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| 23 | sel.set_polarisations([0,2]) |
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| 24 | # reset the polarisation selection |
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| 25 | sel.set_polarisations() |
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| 26 | |
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| 27 | """ |
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| 28 | vec = _to_list(pols, str) and _to_list(pols, int) |
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| 29 | if vec: # is an empty and/or valid vector |
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| 30 | if len(vec) and isinstance(vec[-1],str): |
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| 31 | self._setpolstrings(self, vec) |
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| 32 | return |
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| 33 | self._setpols(vec) |
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| 34 | else: |
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| 35 | raise TypeError('Unknown pol type. Please use [0,1...] or ["XX","YY"...]') |
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| 36 | |
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| 37 | def set_ifs(self, ifs=[]): |
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| 38 | """ |
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| 39 | Set a sequence of IF numbers (0-based). |
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| 40 | Parameters: |
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| 41 | ifs: a list of integers. Default [] is to unset the selection. |
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| 42 | """ |
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| 43 | vec = _to_list(ifs, int) |
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| 44 | if vec: |
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| 45 | self._setifs(vec) |
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| 46 | else: |
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| 47 | raise TypeError('Unknown IFno type. Use lists of integers.') |
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| 48 | |
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| 49 | def set_scans(self, scans=[]): |
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| 50 | """ |
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| 51 | Set a sequence of Scan numbers (0-based). |
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| 52 | Parameters: |
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| 53 | scans: a list of integers. Default [] is to unset the selection. |
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| 54 | """ |
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| 55 | vec = _to_list(scans, int) |
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| 56 | if vec: |
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| 57 | self._setscans(vec) |
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| 58 | else: |
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| 59 | raise TypeError('Unknown Scan number type. Use lists of integers.') |
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| 60 | |
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| 61 | def set_beams(self, beams=[]): |
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| 62 | """ |
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| 63 | Set a sequence of Beam numbers (0-based). |
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| 64 | Parameters: |
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| 65 | beams: a list of integers. Default [] is to unset the selection. |
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| 66 | """ |
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| 67 | vec = _to_list(beams, int) |
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| 68 | if vec: |
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| 69 | self._setbeams(vec) |
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| 70 | else: |
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| 71 | raise TypeError('Unknown Beam number type. Use lists of integers.') |
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| 72 | |
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| 73 | def set_cycles(self, cycles=[]): |
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| 74 | """ |
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| 75 | Set a sequence of IF numbers (0-based). |
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| 76 | Parameters: |
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| 77 | cycless: a list of integers. Default [] is to unset the selection. |
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| 78 | """ |
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| 79 | vec = _to_list(cycles, int) |
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| 80 | if vec: |
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| 81 | self._setcycles(vec) |
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| 82 | else: |
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| 83 | raise TypeError('Unknown Cycle number type. Use lists of integers.') |
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| 84 | |
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| 85 | |
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| 86 | def set_name(self, name): |
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| 87 | """ |
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| 88 | Set a selection based on a name. This can be a unix pattern , e.g. "*_R" |
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| 89 | Parameters: |
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| 90 | name: a string containing a source name or pattern |
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| 91 | Examples: |
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| 92 | # select all reference scans which start with "Orion" |
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| 93 | selection.set_name("Orion*_R") |
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| 94 | """ |
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| 95 | if isinstance(name, str): |
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| 96 | self._setame(name) |
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| 97 | else: |
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| 98 | raise TypeError('name must be a string') |
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| 99 | |
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| 100 | def set_tsys(self, tsysmin=0.0, tsysmax=None): |
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| 101 | """ |
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| 102 | Select by Tsys range. |
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| 103 | Parameters: |
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| 104 | tsysmin: the lower threshold. Default 0.0 |
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| 105 | tsysmax: the upper threshold. Default None. |
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| 106 | Examples: |
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| 107 | # select all spectra with Tsys <= 500.0 |
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| 108 | selection.set_tsys(tsysmax=500.0) |
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| 109 | |
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| 110 | """ |
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| 111 | taql = "SELECT FROM $1 WHERE TSYS >= %f" % (tsysmin) |
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| 112 | if isinstance(tsysmax, float): |
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| 113 | taql = taql + " AND TSYS <= %f" % ( tsysmax) |
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| 114 | self._settaql(taql) |
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| 115 | |
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| 116 | def set_query(self, query): |
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| 117 | """ |
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| 118 | Select by Column query. Power users only! |
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| 119 | Example: |
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| 120 | # select all off scans with integration times over 60 seconds. |
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| 121 | selection.set_query("SRCTYPE == 1 AND INTERVAL > 60.0") |
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| 122 | """ |
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| 123 | taql = "SELECT FROM $1 WHERE " + query |
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| 124 | self._settaql(taql) |
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| 125 | |
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