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| public:user_software:documentation:ndppp [2020-01-09 14:05] – [DDECal] André Offringa | public:user_software:documentation:ndppp [2020-01-09 14:12] – [DDECal] André Offringa |
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| |<step>.antennaconstraint|list|[]|A list of lists specifying groups of antennas that are to be constrained to have the same solution. Example: "[ [CS002HBA0,CS002HBA1],[CS003HBA0,CS003HBA1] ]" will keep the solutions of CS002HBA0 and 1 the same, and the same for CS003.| | |<step>.antennaconstraint|list|[]|A list of lists specifying groups of antennas that are to be constrained to have the same solution. Example: "[ [CS002HBA0,CS002HBA1],[CS003HBA0,CS003HBA1] ]" will keep the solutions of CS002HBA0 and 1 the same, and the same for CS003.| |
| |<step>.smoothnessconstraint|double|0|Kernel size in Hz. When unequal to 0, will constrain the solutions to be smooth over frequency by convolving the solutions with a kernel of the given size (bandwidth). The default kernel is a Gaussian kernel, and the kernel size parameter is the 3 sigma point where the kernel is cut off.| | |<step>.smoothnessconstraint|double|0|Kernel size in Hz. When unequal to 0, will constrain the solutions to be smooth over frequency by convolving the solutions with a kernel of the given size (bandwidth). The default kernel is a Gaussian kernel, and the kernel size parameter is the 3 sigma point where the kernel is cut off.| |
| |<step>.statfilename|string|_ckgedit_QUOT__ckgedit> | File to write the step-sizes to. Form of the file is: "<iterationnr> <normalized-stepsize> <unnormalized-stepsize>", and all solution intervals are concatenated. File is not written when this parameter is empty. | <step>.uvlambdamin | double | 0 | Ignore baselines / channels with UV < uvlambdamin wavelengths. **Note**: also all other variants of uv flagging described in [[#uvwflagger|UVWFlagger]] (uvmmin, uvmrange, uvlambdarange, etc) are supported (New in 3.1).| <step>.subtract | bool | false | Subtracts the corrected model from the data. **NOTE** This may not work when you apply a uv-cut. | <step>.useidg | bool | false | Do image-based prediction using IDG.| <step>.idg.image | string | _ckgedit_QUOT__ckgedit>|Name of fits file for IDG prediction. Should have the phase direction of the measurement set.| | |<step>.statfilename|string| | File to write the step-sizes to. Form of the file is: "<iterationnr> <normalized-stepsize> <unnormalized-stepsize>", and all solution intervals are concatenated. File is not written when this parameter is empty.| |
| |<step>.idg.regions|string|""|DS9 regions file describing the facets for IDG prediction.| | |<step>.uvlambdamin | double | 0 | Ignore baselines / channels with UV < uvlambdamin wavelengths. **Note**: also all other variants of uv flagging described in [[#uvwflagger|UVWFlagger]] (uvmmin, uvmrange, uvlambdarange, etc) are supported (New in 3.1).| |
| |<step>.idg.images|list|[]|Filename of ''.fits'' model images, one per frequency term. The terms are defined as for a polynomial source spectra (not logarithmic), e.g. see [[https://sourceforge.net/p/wsclean/wiki/ComponentList/|this WSClean page]]. The frequency in the metadata of the fits files is used as nu<sub>0</sub> in the polynomial evaluation.| | |<step>.subtract | bool | false | Subtracts the corrected model from the data. **NOTE** This may not work when you apply a uv-cut.| |
| | | <step>.useidg | bool | false | Do image-based prediction using IDG.| |
| | |<step>.idg.images|list|[]|Filename of ''.fits'' model images, one per frequency term. The terms are defined as for a polynomial source spectra (not logarithmic), e.g. see [[https://sourceforge.net/p/wsclean/wiki/ComponentList|<step>.idg.regions|string|""|DS9 regions file describing the facets for IDG prediction.| |
| | /|this WSClean page]]. The frequency in the metadata of the fits files is used as nu<sub>0</sub> in the polynomial evaluation.| |
| |<step>.savefacets|bool|false|Write out each facet as a fits file (named facet<N>.fits). Only useful when useidg=true.| | |<step>.savefacets|bool|false|Write out each facet as a fits file (named facet<N>.fits). Only useful when useidg=true.| |
| |<step>.onlypredict|bool|false|Instead of solving, output the predicted visibilities instead. This is useful for testing, although when doing faceted prediction with IDG, it might be fast for certain cases.| | |<step>.onlypredict|bool|false|Instead of solving, output the predicted visibilities instead. This is useful for testing, although when doing faceted prediction with IDG, it might be fast for certain cases.| |