Comments (5)
WKT does allow a third dimension, but you will have to specify what that third dimension is. In this case I think you can use EPSG:9705
(WGS84 + mean sea level height) in dwc:footprintSRS
. Here's an example for footprintWKT
:
LINESTRING Z (-3.515625 47.709762 -10, -3.779297 45.996962 -100, -4.438477 45.58329 -1000)
from dwc-qa.
I don't know if there are any best practise for this maybe the OBIS folks would know.
Generally, the start and end position of the trawl event could be modelled in the the dwc:footprintWKT (https://dwc.tdwg.org/terms/#dwc:footprintWKT) field, something like LINESTRING (startLong sartLat, endLong endLat)
. As far as I know, there wouldn't be something allowing a 3D line. Using the minimum and maximum depth would help make the data findable in GBIF. You can specify more in the samplingProtocol, samplingEffort and eventRemarks fields.
from dwc-qa.
Maybe it makes sense to create three events - (1) start of the trawl as the first event, (2) the full trawl as the third event, and (3) the end of the trawl as the third event? And chain them together using parentEventID?
from dwc-qa.
I was unaware of WKT allowing a third dimension, but I think that's a great option for describing the transect. It seems to me that the simplest thing would be to use it to describe the entire transect as a single sample, but I wouldn't be opposed to what @dagendresen suggests, or some variation on it.
from dwc-qa.
It is also possible to use the extended Measurement or Facts extension (eMoF) for the start and end depth of the Event. Maybe these two vocabs suggested by @JoBeja can be used for measurementTypeID
field (if relevant to how they were measured):
- https://vocab.nerc.ac.uk/collection/P01/current/DXPHPRST/
- http://vocab.nerc.ac.uk/collection/P01/current/DXPHPRXN/
Thanks again!
from dwc-qa.
Related Issues (20)
- Example, if possible, of a core file that includes both Checklist and Occurrence data? HOT 1
- How to store information of multiple life stages in a museum sample when everything is together HOT 5
- Is there a location for a plain list of dwc terms? HOT 1
- Mixing of DwC class terms in DwCA files
- Need of a field or vocabulary to document endemic status HOT 5
- can I put am or pm in eventTime? HOT 2
- dwc:month examples have text, do I assume we really only want the numeric? HOT 11
- I'm guessing we really only want the numeric, not the text string? yes?
- dwc:datasetName use to group datasets, yes, no, options please? HOT 10
- How can the basisOfRecord for a holotype be HumanObservation?
- Different dynamicProperties fields in event.txt and occurrence.txt - what happens when the tables are joined? HOT 6
- Is there a dwc term (or other tdwg term) for informal group? HOT 5
- Should WoRMS LSID be the value of dwc:taxonID or dwc:scientificNameID in Occurrence core/extension? HOT 20
- Processed variables: concentration of zooplankton HOT 2
- Creating a geospatial range within metadata HOT 2
- Linking occurrences to source information? HOT 1
- Use of International System of Units (SI) in sampleSizeUnit and what is the best practice HOT 1
- Pipe separators are interfering with Markdown-based feedback loops HOT 5
- Observing/collection method filtering HOT 1
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from dwc-qa.