Date post: | 02-Apr-2015 |
Category: |
Documents |
Upload: | ruby-henshall |
View: | 212 times |
Download: | 0 times |
Pieter Bresters, Krakow, October 2014
SU-PD INSPIRE data harmonisation
2
SU-PD population grid data harmonisation
Harmonized
GML-SU
GML-PDAs is
3
Contents
– Explanation – Approach– Encountered problems– Conclusions– Discussion
4
Explanation
Why harmonize?
– INSPIRE directive‐ 34 themes, 3 Annexes‐ Statistical Units (SU)‐ Population Distribution (PD)
– Better data interoperability throughout Europe
5
Explanation
– December 2013 data had to be published as-is.– October 2015 new Annex III datasets have to be
harmonized.
– Population grids concern 2 INSPIRE themes‐ SU: Statistical Units (grid)‐ PD: Population Distribution
– TWG SU and PD has delivered 2 data specifications
– They were translated in schema definition files (.xsd)
6
Explanation SU-Grid
7
Explanation PD
8
Approach
– Download As-Is data from www.efgs.info– Create ArcGIS shape file in ArcGIS– Tried to do it with DataInterop extension of ArcGIS 10.1– Create GML’s As-Is in QGIS– Download output schema’s:
http://inspire.ec.europa.eu/schemas/ – Used HALE software to define transformation– Created 2 GML (SU and PD)– Tried to import them in GIS-software
The start.
9
Join the .csv file to the grid in ArcGIS
10
Create GML-As Is in QGIS
11
Define transformation with HALE
12
Define transformation with HALE
13
Define transformation with HALE
14
Define transformation with HALE
15
Import output GML (SU and PD)
16
Import output GML (SU and PD)
17
Encountered problems
– Many unknown attributes
– What to fill in for mandatory ID’s?
– How to import the resulting GML’s?
– Geometry conversion
– How to deal with no geometry in PD?
18
Encountered problems
19
Encountered problems
– Many unknown attributes
– What to fill in for mandatory ID’s?
– How to import the resulting GML’s?
– Geometry conversion
– How to deal with no geometry in PD?
20
Encountered problems
21
Conclusions
– HALE seems to do the job and has good forum support
– Splitting one dataset into two does not make it easier for the GIS users
– It is not clear how to implement SU and PD models in other encodings than GML
22
Discussion
– Should there be a combined model (xsd) for SU-PD?
If so, How do we arrange this?
If not:‐ How do we make PD useable for GIS-users?‐ Should there be one SU-grid service for EU?‐ Is there a need for a Table Joining Service for grids?
– How do we deal with cross border pixels in INSPIRE?23
Thank you for your attention
Are there any questions?
24