HeaderMapper¶
- class pyvo.mivot.writer.HeaderMapper(votable)[source]¶
Bases:
objectThis utility class generates dictionaries from header elements of a VOTable. These dictionaries are used as input parameters by
pyvo.mivot.writer.InstancesFromModelsto create MIVOT instances that are placed in the GLOBALS block or in the TEMPLATES. In the current implementation, the following elements can be extracted:COOSYS -> coords:SpaceSys
TIMESYS - coords:TimeSys
INFO -> mango:QueryOrigin
FIELD -> mango:EpochPosition
Constructor parameters:
- Parameters:
- votableastropy.io.votable.tree.VOTableFile
parsed votable from which INFO element are processed
Methods Summary
Create a mapping dictionary for each
COOSYSelement found in the first VOTable resource.Analyze the FIELD UCD-s to infer a data mapping to the EpochPosition class.
Create a mapping dictionary from all VOTable
INFOelements.Create a mapping dictionary for each
TIMESYSelement found in the first VOTable resource.Methods Documentation
- extract_coosys_mapping()[source]¶
Create a mapping dictionary for each
COOSYSelement found in the first VOTable resource.- Returns:
- [dict]
Array of dictionaries which items can be used as input parameter for
pyvo.mivot.writer.InstancesFromModels.add_simple_space_frame()
- extract_epochposition_mapping()[source]¶
Analyze the FIELD UCD-s to infer a data mapping to the EpochPosition class. This mapping covers the 6 parameters with the Epoch and their errors. The correlation part is not covered since there is no specific UCD for this. The UCD-s accepted for each parameter are defined in
pyvo.mivot.glossary.The error classes are hard-coded as the most likely types.
PErrorSym2D for 2D parameters
PErrorSym1D for 1D parameters
- Returns:
- (dict, dict)
A mapping proposal for the EpochPosiion + errors that can be used as input parameter by
pyvo.mivot.writer.InstancesFromModels.add_mango_epoch_position().
- extract_origin_mapping()[source]¶
Create a mapping dictionary from all VOTable
INFOelements. This dictionary is used to build amango:QueryOriginINSTANCEINFO elements located in the VOTable header are used to build the
mango:QueryOriginpart which scope is the whole VOtable by construction (one query -> one VOTable)INFO elements located in the resource header are used to build the
mango:DataOriginpart which scope is the data located in this resource.
- Returns:
- dict
Dictionary that can be used as input parameter for
pyvo.mivot.writer.InstancesFromModels.add_query_origin()
- extract_timesys_mapping()[source]¶
Create a mapping dictionary for each
TIMESYSelement found in the first VOTable resource.Note
the
originattribute is not supported yet- Returns:
- [dict]
Array of dictionaries which items can be used as input parameter for
pyvo.mivot.writer.InstancesFromModels.add_simple_time_frame()