HeaderMapper¶
- class pyvo.mivot.writer.HeaderMapper(votable)[source]¶
Bases:
object
This utility class generates dictionaries from header elements of a VOTable. These dictionaries are used as input parameters by
pyvo.mivot.writer.InstancesFromModels
to 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
COOSYS
element 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
INFO
elements.Create a mapping dictionary for each
TIMESYS
element found in the first VOTable resource.Methods Documentation
- extract_coosys_mapping()[source]¶
Create a mapping dictionary for each
COOSYS
element 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
INFO
elements. This dictionary is used to build amango:QueryOrigin
INSTANCEINFO elements located in the VOTable header are used to build the
mango:QueryOrigin
part 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:DataOrigin
part 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
TIMESYS
element found in the first VOTable resource.Note
the
origin
attribute 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()