1

Topic: Spatial portal OS grid display.

Following on from Rachel's post (http://forums.nbn.org.uk/viewtopic.php?pid=25610#p25610), can someone point me to an explanation or explain how different grid ref resolutions are dealt with when shown as points - i.e. what point of the grid ref is used? and are e.g. 10km grid refs reduced down to a point (i.e. made inaccurate?)

Charlie Barnes
Information Officer
Greater Lincolnshire Nature Partnership

2

Re: Spatial portal OS grid display.

I just had a look at Mountain Ringlet on http://spatial.als.scot/ (which is calling itself Small Mountain Ringlet, I assume because the UK species inventory isn't being used - yet(?)).

Not too many records, so easy to see what is being displayed. The points are in the centre of the grid square if you are displaying as points rather than OS grids. You can tick "display spatial uncertainty as a circle" to see which dots relate to 10km etc.

-----------------
Teresa Frost | Wetland Bird Survey National Organiser | BTO
Other hat  | National Forum for Biological Recording Council
(Old hats  | NBN Board, ALERC Board, CBDC, KMBRC)

3

Re: Spatial portal OS grid display.

Hi Charlie.  The centre of the grid cell is used, but we populate the coordinate uncertainty property to indicate the precision of the coordinate. 

So for example, if you select a point in the Spatial Portal you will see the following record metadata in the pop up (for example...)

"Layer: House Sparrow
Scientific name: Passer domesticus
Kingdom: Animalia
Family: Passeridae
Data provider: Royal Society for the Protection of Birds
Grid reference: NS999461
Longitude: -3.59341 , Latitude: 55.69845 (zoom to)
Spatial uncertainty in metres: 100 metres
Occurrence date: 01/2009
Full record: View details
More detail: All records at this point"

You will see that the Grid Ref, Lat Long and Coordinate uncertainty are available

You can also colour by Spatial Uncertainty
-Occurrence Display>Points
-Colour by >Coordinate Uncertainty (in metres)

I cannot load a screenshot on the Forum which is frustrating so let me know if this is not clear!

4

Re: Spatial portal OS grid display.

TeresaF wrote:

I just had a look at Mountain Ringlet on http://spatial.als.scot/ (which is calling itself Small Mountain Ringlet, I assume because the UK species inventory isn't being used - yet(?)).

Hi Teresa, We are indeed using the UK Species Inventory in the Atlas and it appears that the accepted name is Small Mountain Ringlet (https://data.nbn.org.uk/Taxa/NHMSYS0000519788) which the Atlas goes off.  If this needs updating would you be able to raise with Chris Raper?

Thanks!

5

Re: Spatial portal OS grid display.

Thanks Rachel/Teresa!

Charlie Barnes
Information Officer
Greater Lincolnshire Nature Partnership

6

Re: Spatial portal OS grid display.

Thanks Rachel, you are absolutely right sorry, Small Mountain Ringlet is the preferred (or recommended I can never remember which is which) common name in the UKSI.

As a user on the Gateway I could put Mountain Ringlet and it would find as a synonym and I wouldn't need to worry i.e. top result on https://data.nbn.org.uk/Search?q=mountain+ringlet takes you to https://data.nbn.org.uk/Taxa/NHMSYS0000519788 which has Small Mountain Ringlet as the Common Name and Mountain Ringlet is in the well-formed name part of the synonym list.

Whereas at the moment when I searched on the ALS "Mountain Ringlet" wasn't an option and so - being not very knowledgeable about butterflies and their names - I wasn't sure at first if Small Mountain Ringlet was the same thing or not.

Do you know if the plan is for all the synonyms in the UKSI to eventually be included in the search like they are in the Gateway? The synonym lists are one of my most used features on the Gateway, as I've never got on with the NHM UKSI site.

Apologies for taking this thread wildly off-topic!

-----------------
Teresa Frost | Wetland Bird Survey National Organiser | BTO
Other hat  | National Forum for Biological Recording Council
(Old hats  | NBN Board, ALERC Board, CBDC, KMBRC)