Dear Dominique,

Thank you very much for this.

Here is the link to the news item, with further explanations:

https://inspire.ec.europa.eu/forum/news/view/258971/request-for-comments-on-unggim-core-data-spatial-theme-orthoimage-recommendations-for-content

Jordi

Dear Dominique,

Please, let us know if the comments to the UNGGIM document and the final outcomes will be published. And where.

It would be interesting for the Elevation, Ortho & Grids discussion group to follow.

Jordi

Dear All,

It would be nice if somebody who has experience using TIFF format could guide and/or answer Artur Seara on this question.

Jordi

Dear Johanna,

In my view you are able to include this information in the dataset level metadata, if the recommended interpolation method is applicable to all the coverage spatial objects composing the dataset.

You may also provide this information at spatial object level for each coverage, using the metadata attribute foreseen for this purpose (metadata slot of each coverage) - As stated in Section 5.5.1.2.5 you may use and ISO 19115 structure for it, but also other metadata structures. 

The metadata slot has multiple cardinality.

Please let me know if this satisfies your case / question.

Jordi

Dear Jordi,

Thank you for your reply and the further explanation. I just saw that the screenshot I added to my last post got not displayed and added it again  ;)

That satisfies my question - we will check whether we provide it on dataset level or on spatial object level.

All the best, Johanna

OK - Do not hesitate to post any other questions / issues in the cluster.

All the best,

Jordi

Hello Johanna,

the rectified grid attribute looks like this. There is no extent?

Sample coverage: https://themes.jrc.ec.europa.eu/file/view/214982/gml-example-renewableandwastepotentialcoverage-er-c

Best regards

Enrico

Hello Enrico,

Thank you for the reply. Exactly, as I mentioned, in the XSD, there is no extent attribute. But looking at this UML diagram, I would expect one in CV_RectifiedGrid:

(the diagram extract is taken from the OI specification - figure 8 as the EL specification is less deteiled there).

Also, section 5.5.1.2.2. of the EL Data Specification mentions an extent attribute: "By inheritance from RectifiedGridCoverage, the value type is restricted to CV_RectifiedGrid. This ISO 19123 element allows defining the characteristics of the internal grid structure: the grid dimension, which is constrained to two (CV_RectifiedGrid::dimension), the extent which reports the extreme internal grid coordinates of the DEM (CV_RectifiedGrid::extent) and the names the grid axes (CV_RectifiedGrid::axisNames)."

That is why I am confused there is no extent in the XSD.

Dear Johanna,

Thank you very much for your question.

Please have a look at the material from the Webinar "Implementation of INSPIRE Coverages": 

https://inspire.ec.europa.eu/forum/pages/view/159283/webinar-implementation-of-inspire-coverages

In this activity we explained that the INSPIRE UML models (included in the data specifications) are defined at conceptual level, and extends the standard content expected in an standard OGC coverage implemented according to CIS 1.0.

The following article describes the issues in more detail:

INSPIRE Coverages: An Analysis and Some Suggestions., Open Geospatial Data, Software and Standards, (2019) 4:1, DOI: https://doi.org/10.1186/s40965-019-0059-x

Therefore, there is a need to clarify the mapping between the conceptual elements foreseen in an INSPIRE coverage according to the data specifications and the elements expected according to an OGC standard implementation.

As a result, the INSPIRE coverages schemas shall be corrected and translated to the "implementation" level while being conformant to the OGC standard CIS 1.0.

I have recently agreed with JRC to help in updating the INSPIRE coverage schemas to solve this situation. 

I will be informing the Thematic Cluster about the progress.

Excuse me for the delay in responding.

Jordi