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Geolocation in data models


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Is there currently a best practice for adding a geographical location to an object in a data model?

I’ve considered simply using a string property to my model containing wkt-formatted strings, or a GeoSpatial feature external id, but none of them seem ideal. I assume there is a size limit on strings - so that wkt might be a bad choice? 

We’ve previously discussed this for timeseries, where you mentioned that data model geolocation was on the roadmap. Any update on this? 😊

 

Best answer by Terje Wiig Mathisen

I don’t know what the actual limit is so instead I’ll paraphrase Nike: “Just try it!”

I.e. make a big WKT, including all the datum/ellipsoid/vertical datum information along with UTM and/or lat/lon coordinates and  test if you can both write it and read it back correctly.

OK?

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I believe you are on the right path here, i.e. WKT is the canonical way to express this. Have you tried it and run into size limitations?


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I haven’t tried, but thought I previously heard something about size limitation for string properties - I might be wrong, though. 

I heard some rumors about a plan to support geoobjects as a native type in data models. So we decided to postpone the inclusion of geo-information in our enterprise model until we hear more about the future roadmap for this feature.


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I don’t know what the actual limit is so instead I’ll paraphrase Nike: “Just try it!”

I.e. make a big WKT, including all the datum/ellipsoid/vertical datum information along with UTM and/or lat/lon coordinates and  test if you can both write it and read it back correctly.

OK?


Dilini Fernando
Seasoned Practitioner
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  • Seasoned Practitioner
  • 670 replies
  • August 30, 2024

Hi @Kristian Nymoen,

We are following up to see whether you're satisfied with the responses you've received?

 


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Dilini Fernando wrote:

Hi @Kristian Nymoen,

We are following up to see whether you're satisfied with the responses you've received?

 

Thanks for following up. Yes, albeit I was hoping for a more standardized way to handle geoLocation in datamodels. Say, a specific geolocation type where one might put restrictions to guarantee only using valid wkt-strings, possibly filtering a search on types of polygons etc. We’ve decided not to pursue this path any further for now, but might return to it at a later stage.


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