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Topic: Where has IOM gone?

Before getting to the point, there is a server error returned whenever I try to see the details of a dataset, e.g. https://data.nbn.org.uk/Datasets/GA000495, whether I am logged in, whether it is one of mine or not, in Opera and Chrome.

And now here is the point.  I have been toying with the idea of displaying the HBRG record density maps on our website, and noticed in the test page I set up that the Isle of Man is not there.  Try https://gis.nbn.org.uk/DatasetSpeciesDe … magesize=4 to get to a map directly.

The big mystery is why no-one a bit closer to the Irish Sea than I am has noticed the omission.

Murdo

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Re: Where has IOM gone?

Hi Mrudo, firstly there is an issue with one of our warehouses which we are trying to track down, it had appeared to be working fine at the end of last week, but obviously there is still a deeper problem which we have yet to find, your dataset appears to be working now, the issue you were experiencing was due to the database load-balancer picking the wrong warehouse a lot of the time (probably as it was returning quicker).

I guess the IOM has never been on the outline map, I will have a look at what we can do, but I suspect it may be a while before the IOM appears on the outline map at least

Matt

Matt Debont
Application Developer
Joint Nature Conservation Committee, Monkstone House, City Road, Peterborough PE1 1JY, UK

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Re: Where has IOM gone?

If you add &background=gbi to the URL IoM shows up; however the eagle eyed among you might notice that the background mapping is slightly different - e.g. Inchkeith, the Thames are now showing.

https://gis.nbn.org.uk/DatasetSpeciesDe … ground=gbi

Charlie Barnes
Information Officer
Greater Lincolnshire Nature Partnership

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Re: Where has IOM gone?

Thanks Charlie, I had forgotten about the gbi background, still would like to have the IOM on the default display but at least there is a workaround for this.

Matt

Matt Debont
Application Developer
Joint Nature Conservation Committee, Monkstone House, City Road, Peterborough PE1 1JY, UK

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Re: Where has IOM gone?

Surely all you have to do is add &background=gbi to one line of code and the matter is solved at source?

Why it should need that kludge is another question, since any map showing both sides of the Irish Sea that is worth having at all should include IOM, but you can add that to the myriad other questions about why the G5 interface is as imperfect as it is.

M.

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Re: Where has IOM gone?

Another curiosity about this tale is that the map outline used for the grid maps of species has IOM (but, strangely, lacks the series of small but ecologically rather important islands W of Orkney and the W Isles (Sule Stack, Sule Skerry, Sula Sgeir, N Rona, Flannans, Monachs, and Boreray).  The one you get with the kludge seems to be the same background map.  The default record density map shows all of these islands, but lacks IOM.

The geography of Britain has not changed a great deal in the past millennium so there seems little excuse for having maps that do not reflect reality (OK - someone else can argue that with OS), but more puzzling is why G5 should use two different outlines in different contexts for plots that are essentially the same.  Another of the imponderable inconsistencies that plague this site.

I can't leave without pointing out that G4 gridmaps (also OS origin) have all these small northern isles *and* IOM on the one map with no need for a kludge.  Is the suggestion that you dig out the map you are still displaying in G4, and stick it into G5, a ludicrous suggestion?  Some folk would think that moving from one complete map to a choice between two incomplete maps constitutes neither 'progress' nor 'improvement', except possibly in the lexicon of the elite in Pyongyang.

M.

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Re: Where has IOM gone?

Hi Murdo,

I've been through the background maps, added the Isle of Man as required and also checked the islands you mentioned (just Sule Stack and Flannans where inconsistent across two map layers). 

You'll see that sometimes not all the small islands appear in the image even when they exist in the underlying data - this is because they are just too small for the software to render.  This is seen in this link for example: https://gis.nbn.org.uk/DatasetSpeciesDe … agesize=15 - Sule Stack does not turn on a single pixel, but it does exist in the source data.

Best regards, Jon

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Re: Where has IOM gone?

Thanks, Jon. Some improvement.

However, look at the map http://old-data.nbn.org.uk/output/gridG … 56448.gif.

It is smaller than the current

https://gis.nbn.org.uk/SingleSpecies/NH … magesize=3

and yet shows all the small islands.

So while I accept that the display in https://gis.nbn.org.uk/DatasetSpeciesDe … agesize=15 does not render properly the underlying data, the question then becomes 'Why is the map layer + software used in G4 able to render the display correctly, while the new 'improved' G5 does not?'.

I can see that the maps in the two systems are generated in different ways, but we still have G5 presenting a less accurate image than G4.  Blaming software for inadequacies in the result is an excuse of which I used to cure my students on day 1. If the software does not deliver the goods, change the software.

Murdo

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Re: Where has IOM gone?

Hello, I did notice this problem. We call it 'Miss Isle of Man Syndrome'!!
Hope it can be sorted before I need to use this map...
many thanks
Philippa (IOM)

Dr Philippa Tomlinson
Biological Records Manager
Manx Biological Recording Partnership