Coverage for /wheeldirectory/casa-6.7.0-12-py3.10.el8/lib/py/lib/python3.10/site-packages/casatasks/impbcor.py: 56%

1##################### generated by xml-casa (v2) from impbcor.xml ################### 

2##################### 419c87f7061a211b6219fbd221c422c8 ############################## 

3from __future__ import absolute_import 

4import numpy 

5from casatools.typecheck import CasaValidator as _val_ctor 

6_pc = _val_ctor( ) 

7from casatools.coercetype import coerce as _coerce 

8from casatools.errors import create_error_string 

9from .private.task_impbcor import impbcor as _impbcor_t 

10from casatasks.private.task_logging import start_log as _start_log 

11from casatasks.private.task_logging import end_log as _end_log 

12from casatasks.private.task_logging import except_log as _except_log 

13 

14class _impbcor: 

15 """ 

16 impbcor ---- Construct a primary beam corrected image from an image and a primary beam pattern. 

17 

18  

19 Correct an image for primary beam attenuation using an image of the 

20 primary beam pattern. The primary beam pattern can be provided as an 

21 image, in which case 1. it must have the same shape as the input image 

22 and its coordinate system must be the same, or 2. it must be a 2-D 

23 image in which case its coordinate system must consist of a (2-D) 

24 direction coordinate which is the same as the direction coordinate in 

25 the input image and its direction plane must be the same shape as that 

26 of the input image. Alternatively, pbimage can be an array of pixel 

27 values in which case the same dimensionality and shape constraints 

28 apply. 

29  

30 One can choose between dividing the image by the primary beam pattern 

31 (mode="divide") or multiplying the image by the primary beam pattern 

32 (mode="multiply"). One can also choose to specify a cutoff limit for 

33 the primary beam pattern. For mode="divide", for all pixels below this 

34 cutoff in the primary beam pattern, the output image will be 

35 masked. In the case of mode="multiply", all pixels in the output will 

36 be masked corresponding to pixels with values greater than the cutoff 

37 in the primary beam pattern. A negative value for cutoff means that no 

38 cutoff will be applied, which is the default. 

39 

40 --------- parameter descriptions --------------------------------------------- 

41 

42 imagename Name of the input (CASA, FITS, MIRIAD) image 

43 pbimage Name of the image (CASA, FITS, MIRIAD) of the primary 

44 beam pattern or an array of pixel values. 

45 Default: '' 

46 outfile Name of output CASA image.  

47 Default: none. Must be specified. 

48 overwrite If output file is specified, controls if an already 

49 existing file by the same name can be overwritten.  

50 Default: True 

51 Options: True|False 

52  

53 If true, the user is not prompted, the file if it 

54 exists is automatically overwritten. 

55 box Rectangular region to select in direction plane. 

56 Default: '' (use the entire direction plane) 

57 region Region selection.  

58 Default: '' (use the full image) 

59 chans Channels to use.  

60 Default: '' (use all channels) 

61 stokes Stokes planes to use. 

62 Default: '' (use all Stokes planes) 

63 mask Mask to use. 

64 Default: none 

65 mode Divide or multiply the image by the primary beam image.  

66 Default: 'divide' 

67  

68 Minimal match supported. 

69 cutoff Primary beam cutoff. 

70 Default: -1.0 (no cutoff) 

71  

72 If mode is "d", all values less than this will be 

73 masked. If "m", all values greater will be 

74 masked. Less than 0, no cutoff (default) 

75 stretch Stretch the mask if necessary and possible?  

76 Default: False 

77 Options: False|True 

78 RETURNS bool 

79 

80 --------- examples ----------------------------------------------------------- 

81 

82  

83 FOR MORE INFORMATION, SEE THE TASK PAGES OF IMPBCOR IN CASA DOCS: 

84 https://casa.nrao.edu/casadocs/ 

85  

86 

87 

88 """ 

89 

90 _info_group_ = """imaging, analysis""" 

91 _info_desc_ = """Construct a primary beam corrected image from an image and a primary beam pattern.""" 

92 

93 def __call__( self, imagename='', pbimage=[ ], outfile='', overwrite=False, box='', region='', chans='', stokes='', mask='', mode='divide', cutoff=float(-1.0), stretch=False ): 

94 schema = {'imagename': {'type': 'cReqPath', 'coerce': _coerce.expand_path}, 'pbimage': {'type': 'cVariant', 'coerce': [_coerce.to_variant]}, 'outfile': {'type': 'cStr', 'coerce': _coerce.to_str}, 'overwrite': {'type': 'cBool'}, 'box': {'type': 'cStr', 'coerce': _coerce.to_str}, 'region': {'type': 'cVariant', 'coerce': [_coerce.to_variant]}, 'chans': {'type': 'cStr', 'coerce': _coerce.to_str}, 'stokes': {'type': 'cStr', 'coerce': _coerce.to_str}, 'mask': {'type': 'cStr', 'coerce': _coerce.to_str}, 'mode': {'type': 'cStr', 'coerce': _coerce.to_str}, 'cutoff': {'type': 'cFloat', 'coerce': _coerce.to_float}, 'stretch': {'type': 'cBool'}} 

95 doc = {'imagename': imagename, 'pbimage': pbimage, 'outfile': outfile, 'overwrite': overwrite, 'box': box, 'region': region, 'chans': chans, 'stokes': stokes, 'mask': mask, 'mode': mode, 'cutoff': cutoff, 'stretch': stretch} 

96 assert _pc.validate(doc,schema), create_error_string(_pc.errors) 

97 _logging_state_ = _start_log( 'impbcor', [ 'imagename=' + repr(_pc.document['imagename']), 'pbimage=' + repr(_pc.document['pbimage']), 'outfile=' + repr(_pc.document['outfile']), 'overwrite=' + repr(_pc.document['overwrite']), 'box=' + repr(_pc.document['box']), 'region=' + repr(_pc.document['region']), 'chans=' + repr(_pc.document['chans']), 'stokes=' + repr(_pc.document['stokes']), 'mask=' + repr(_pc.document['mask']), 'mode=' + repr(_pc.document['mode']), 'cutoff=' + repr(_pc.document['cutoff']), 'stretch=' + repr(_pc.document['stretch']) ] ) 

98 task_result = None 

99 try: 

100 task_result = _impbcor_t( _pc.document['imagename'], _pc.document['pbimage'], _pc.document['outfile'], _pc.document['overwrite'], _pc.document['box'], _pc.document['region'], _pc.document['chans'], _pc.document['stokes'], _pc.document['mask'], _pc.document['mode'], _pc.document['cutoff'], _pc.document['stretch'] ) 

101 except Exception as exc: 

102 _except_log('impbcor', exc) 

103 raise 

104 finally: 

105 task_result = _end_log( _logging_state_, 'impbcor', task_result ) 

106 return task_result 

107 

108impbcor = _impbcor( ) 

109