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name="IvoaDataModel" |
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< | DM work package : Utypes definition and syntax |
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> | DM work package : Utypes definition and syntax |
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< | +++ Last draft on Utype definition : |
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> | Work is currently taking place in UtypesTigerTeam. |
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< | Mai 2012 WD-Utypes-0.7-20120521.pdf |
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< | WD-Utypes-0.4-20091107.pdf
+++ Last iterations on the definitions
(presentations @ interop meetings) |
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> | Last iterations on the definitions (presentations @ interop meetings)
This topic is under the Data model pages but also addressed in the TCG Topic page : ?? TCGTopicsUtypes |
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< | This topic is under the Data model pages but also addressed in the TCG Topic page : ?? TCGTopicsUtypes |
| | What are Utypes for |
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< | Utypes are names that we can attach to a piece of metadata in order to point to the same concept expressed in a VO data model.
Ex: astrometry statistical error = 0.02 arcsec |
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< | This metadata can be represented in the VO using the Characterisation data model by :
char:Spatial.Accuracy.StatError.Refval |
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> | Utypes are names that we can attach to a piece of metadata in order to point to the same concept expressed in a VO data model.
Ex: astrometry statistical error = 0.02 arcsec |
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> | This metadata can be represented in the VO using the Characterisation data model by : char:Spatial.Accuracy.StatError.Refval |
| | If we associate "astrometry statistical error" with this utype, we can derive various properties like: |
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- the concept of astrometrical error is the same as the one described in the model.
- This concept relies on accuracy along the spatial axis.
- If we provide a value with this utype, it is stored in the same type as the data model element and if mentionned in the restricted units defined by the model.
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- the concept of astrometrical error is the same as the one described in the model.
- This concept relies on accuracy along the spatial axis.
- If we provide a value with this utype, it is stored in the same type as the data model element and if mentionned in the restricted units defined by the model.
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| | How can I find which Utype is relevant for my data collection |
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- Select an IVOA data model to which you want to be compliant. Ex : Characterisation Data Model
- Browse the Utype list and its documentation to select the appropriate Utype list for your metadata description
- Check wether all mandatory Utypes are filled in .
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- Select an IVOA data model to which you want to be compliant. Ex : Characterisation Data Model
- Browse the Utype list and its documentation to select the appropriate Utype list for your metadata description
- Check wether all mandatory Utypes are filled in .
- Examples
- - For a Fits image : FITS keyword RESOL will map
SpatialAxis.Resolution.RefVal in the Characterisation Data Model utypes list
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- Examples
- - For a Fits image : FITS keyword RESOL will map
SpatialAxis.Resolution.RefVal in the Characterisation Data Model utypes list
- For a Fits simple spectrum : FITS keyword SPECTRES will map SpectralAxis.Resolution.RefVal
If you publish your data with CharacterisationDM-v1.11 , you can use the CAMEA VO Tool (http://eurovotech.org/twiki/bin/view/VOTech/CharacEditorTool) to check the Utype assignation, and verify if your description is compliant to this model. |
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> | - For a Fits simple spectrum : FITS keyword SPECTRES will map SpectralAxis.Resolution.RefVal |
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> | If you publish your data with CharacterisationDM-v1.11 , you can use the CAMEA VO Tool (http://eurovotech.org/twiki/bin/view/VOTech/CharacEditorTool) to check the Utype assignation, and verify if your description is compliant to this model. |
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| META FILEATTACHMENT |
attr="" comment="Draft Note on UTypes" date="1169992282" moveby="MireilleLouys" movedto="IVOA.Utypes" movedwhen="1213181130" movefrom="IVOA.IvoaDataModel" name="note-utype-draft1.5.html" path="note-utype-draft1.5.html" size="34896" user="NormanGray" version="1.1" |
| META FILEATTACHMENT |
attr="" comment="Utype preliminary WD" date="1243283468" name="WD-Utypes-0.3-20090522.pdf" path="WD-Utypes-0.3-20090522.pdf" size="560156" user="MireilleLouys" version="1.1" |
| META FILEATTACHMENT |
attr="" comment="" date="1257757494" name="WD-Utypes-0.4-20091107.pdf" path="WD-Utypes-0.4-20091107.pdf" size="594350" user="MireilleLouys" version="1.1" |
| META FILEATTACHMENT |
attr="" comment="tex version" date="1319104405" name="WD-Utypes-0.4-20091107.tex" path="WD-Utypes-0.4-20091107.tex" size="35618" user="MireilleLouys" version="1.1" |
| META FILEATTACHMENT |
attr="" comment="" date="1321383933" name="utype-extra-meeting.pdf" path="utype-extra-meeting.pdf" size="280221" user="OmarLaurino" version="1.1" |
| META FILEATTACHMENT |
attr="" comment="example of Query response from ObsTAP" date="1337781138" name="ObsTAPQueryExample.xml" path="ObsTAPQueryExample.xml" size="19042" user="MireilleLouys" version="1.1" |
| META FILEATTACHMENT |
attr="" comment="Example of IVOA DM registration record" date="1337786901" name="PhotDMRegistryRecord.xml" path="PhotDMRegistryRecord.xml" size="2600" user="MireilleLouys" version="1.2" |
| META FILEATTACHMENT |
attr="" comment="Utype draft Mai 2012" date="1337782974" name="WD-Utypes-0.7-20120521.pdf" path="WD-Utypes-0.7-20120521.pdf" size="662827" user="MireilleLouys" version="1.1" |
| META FILEATTACHMENT |
attr="" comment="tex and images for Utype draft" date="1337787418" name="Utypedraft2012.zip" path="Utypedraft2012.zip" size="906723" user="MireilleLouys" version="1.2" |
| META FILEATTACHMENT |
attr="" comment="Utype draft Mai 2012" date="1337787488" name="WD-Utypes-0.7-20120523.pdf" path="WD-Utypes-0.7-20120523.pdf" size="662827" user="MireilleLouys" version="1.1" |
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