| 1 | |
| 2 | == Data Organization == |
| 3 | |
| 4 | The data organization describes the physical meaning of the independent |
| 5 | variable(s) with respect to which the observables are measured. This is |
| 6 | useful for knowing whether and how different data sets can be directly |
| 7 | compared, overlaid, mapped, or otherwise transformed. |
| 8 | |
| 9 | |
| 10 | |
| 11 | ==== Data_Layout ==== |
| 12 | |
| 13 | |
| 14 | type: ''menu''[[BR]] |
| 15 | FITS keyword: ''DATA_ORG''[[BR]] |
| 16 | The following values are recognized: |
| 17 | |
| 18 | |
| 19 | ''' image ''' |
| 20 | |
| 21 | |
| 22 | data organized by two dimensions corresponding to angular displacement |
| 23 | along the axes; examples include photograms (digital or digitized |
| 24 | photographs), spectroheliograms, magnetograms, and Dopplergrams |
| 25 | |
| 26 | ''' map ''' |
| 27 | |
| 28 | |
| 29 | data organized by two dimensions corresponding to spatial displacement |
| 30 | along the axes; examples include synoptic charts |
| 31 | |
| 32 | ''' time_series ''' |
| 33 | |
| 34 | |
| 35 | data organized by one dimension corresponding |
| 36 | to temporal displacement along the axis; note that this is not the |
| 37 | same as a time-tagged set of data records, since it implies sampling |
| 38 | uniformity and provision for data gaps |
| 39 | |
| 40 | ''' movie ''' |
| 41 | |
| 42 | |
| 43 | data organized by three dimensions corresponding to spatial or |
| 44 | angular displacement along two axes and temporal displacement along |
| 45 | the principal (most slowly varying) axis |
| 46 | |
| 47 | ''' spectrum ''' |
| 48 | |
| 49 | |
| 50 | data organized by one dimension corresponding to displacement in |
| 51 | electromagnetic wavelength or frequency along the axis |
| 52 | |
| 53 | ''' mode_spectrum ''' |
| 54 | |
| 55 | |
| 56 | data organized by one or more dimensions corresponding to the quantum |
| 57 | numbers of oscillations |
| 58 | |
| 59 | ''' spectral_temporal ''' |
| 60 | |
| 61 | |
| 62 | data organized by two dimension corresponding to displacement in wavelength or frequency along one axis and temporal diplacement along the other |
| 63 | |
| 64 | ''' spatial_spectral ''' |
| 65 | |
| 66 | |
| 67 | data organized by two dimensions corresponding to spatial or angular image axes and one corresponding to electromagnetic spectral displacement |