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BS: How reliable is Google Earth?

Mr Red 17 Sep 18 - 03:27 PM
Helen 17 Sep 18 - 03:43 PM
Senoufou 17 Sep 18 - 04:38 PM
Will Fly 17 Sep 18 - 04:53 PM
Newport Boy 17 Sep 18 - 04:59 PM
Jack Campin 17 Sep 18 - 05:52 PM
Helen 17 Sep 18 - 06:13 PM
gillymor 17 Sep 18 - 06:49 PM
Jack Campin 17 Sep 18 - 06:57 PM
Joe Offer 17 Sep 18 - 10:34 PM
Mr Red 18 Sep 18 - 03:50 PM
Mr Red 19 Sep 18 - 05:16 AM
Newport Boy 19 Sep 18 - 10:01 AM
Mr Red 20 Sep 18 - 04:19 AM
Helen 20 Sep 18 - 04:02 PM
Newport Boy 30 Sep 18 - 03:10 PM
Mr Red 01 Oct 18 - 05:10 AM
Stilly River Sage 01 Oct 18 - 12:36 PM
FreddyHeadey 04 Oct 18 - 06:58 PM
FreddyHeadey 04 Oct 18 - 07:54 PM
Donuel 06 Oct 18 - 04:28 PM
Mr Red 07 Oct 18 - 04:09 AM
FreddyHeadey 12 Oct 18 - 04:27 AM
Mr Red 12 Oct 18 - 05:17 AM
FreddyHeadey 12 Oct 18 - 07:04 AM
Mr Red 15 Oct 18 - 04:10 AM
Black belt caterpillar wrestler 15 Oct 18 - 04:37 AM

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Subject: BS: How reliable is Google Earth?
From: Mr Red
Date: 17 Sep 18 - 03:27 PM

It has me puzzled.
I am trying to locate the precise house outside which I took a picture.

The problem is that none of walls have the same stonework. And the match has to have two paths with a single end wall between. The stonework has to match too. And nothing fits. My picture looks more older/original than Google Earth which predates my pics by several years. OS Grid Reference taken at the time confirms I have the right place.

My question is:
How much of the minutia is borrowed from elsewhere in the pursuit of compression?

my future procedure will involve more photos. It needs re-doing anyway.


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Subject: RE: BS: How reliable is Google Earth?
From: Helen
Date: 17 Sep 18 - 03:43 PM

Check the dates on each progressive picture. When our house was being built there was a significant delay in getting the verandah built. For many years afterwards I could "drive down the street" on the Google map street view and see the partially finished verandah at the front, then turn down the side street to see the fully completed verandah from the side view. There was a difference in dates of maybe a year, give or take. The dates are at the bottom of each picture.


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Subject: RE: BS: How reliable is Google Earth?
From: Senoufou
Date: 17 Sep 18 - 04:38 PM

I once tried Google Earth to view Adjame (suburb of Abidjan) in Ivory Coast. But the high humidity had caused low mist and one couldn't see anything.
Our last house was another place I tried with Google street view, but the road it was on is unadopted by the Local Authority (private) and all the views stopped short at the entrance to the little street.

A chap in a small light aircraft flew over our last village years ago with a camera and went round the doors selling aerial views of each house. I bought one, and there on the patio was a tiny white dot. Minty the bluepoint Siamese cat was sitting on the patio table! He died two years ago and I daren't look at this photo as it makes me sad.


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Subject: RE: BS: How reliable is Google Earth?
From: Will Fly
Date: 17 Sep 18 - 04:53 PM

My old Volvo Estate, sold two years ago, is still parked outside our house, and the new estate at the end of our road is just bare soil...


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Subject: RE: BS: How reliable is Google Earth?
From: Newport Boy
Date: 17 Sep 18 - 04:59 PM

Apart from a bit of blurring to hide faces, registration numbers, etc, I don't think there's any modification to the captured pictures. Streetview (on Google Maps) recently started identifying the capture date for each image. The information previously was a bit generalised.

It's interesting - half a mile away, Streetview shows open fields. There are now 600 houses there, as shown on satellite view.


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Subject: RE: BS: How reliable is Google Earth?
From: Jack Campin
Date: 17 Sep 18 - 05:52 PM

I occasionally check what map sites have on the most secretive installtion within walking distance of me, a huge data centre that used to have a sign on the gate saying the Royal Bank of Scotland owned it and is now completely unidentified. It's south of Edinburgh on the corner of the B6392 and Melville Gate Road

All the map sites agree on the size of the thing, but Google is consistently less up to date and lower resolution than Apple or Bing. You can see exactly how many air conditioning vents there are on the better images, and more of the elaborate precautions against somebody driving a suicide truck bomb into it. Why the discrepancy? No idea. You'd think if they were really determined to hide the thing from attackers, all the map sites would show it as a potato field or caravan park.


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Subject: RE: BS: How reliable is Google Earth?
From: Helen
Date: 17 Sep 18 - 06:13 PM

A boat bought by my Hubby without consulting me, and when I was more financially desperate than at any other time in my life (i.e. I was an example of "the working poor") showed on the old Google satellite images for many, many years - just to taunt me, I think. I referred to it as TFB, i.e. that effing boat. When we knocked the old house down and built the new one the best bit was that the photo of TFB was also obliterated from Google's current satellite images.

Satellite images show representations of trees rather than full resolution images, to save on data I assume.


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Subject: RE: BS: How reliable is Google Earth?
From: gillymor
Date: 17 Sep 18 - 06:49 PM

My favorite use for GE is to hit the 3d button and mouse it around mountains and entire massifs while reading mountaineering expedition memoirs and sort of follow along but without the frost bite.


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Subject: RE: BS: How reliable is Google Earth?
From: Jack Campin
Date: 17 Sep 18 - 06:57 PM

I just had another look at the Apple satellite imagery of my village (Newtongrange in Midlothian) and as far as I can see all the trees are different and exactly as they are in reality. They took the picture when there was a funfair in the park, you get aerial views of all the rides.

Used to be that published aerial photos of mazes were doctored so as not to help people in them. I doubt that's true any more.


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Subject: RE: BS: How reliable is Google Earth?
From: Joe Offer
Date: 17 Sep 18 - 10:34 PM

What happened to the boat, Helen?
What happened to the hubby?


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Subject: RE: BS: How reliable is Google Earth?
From: Mr Red
Date: 18 Sep 18 - 03:50 PM

Thanx 4 some of the pointers

my pic of ST 57750 73935 +/- 4M from a GPS app & Streetmap of ST 57750 73935

Google maps images are older than Bing, despite Google cars seen this year, locally. My arbiter is the flagstones at 9 Melrose Place, Bing & my pic agree on that they are new. Which confirms I have the location nailed. Despite Bing insisting the address is of the Main Rd (Whiteladies). The houses are too far away to see their number from the road. Or I would have noted them.

The correct location is needed to use with what3words.com which can highlight within 3 metres when linked to, should anyone want to go to the location. the place sports an OS Bench Mark. One that might be contentious. see Photos: the carved kerbstone

It looks like Apple maps are only available for Apple products - thus uninformative in my case.


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Subject: RE: BS: How reliable is Google Earth?
From: Mr Red
Date: 19 Sep 18 - 05:16 AM

Several times I have found that Goggle Earth fails at junctions. These were routes I genuinely wanted to traverse. In a couple of cases it let me out of a T junction but refused when I tried the return journey. Admittedly rural locations, but that is when it is most useful (allegedly).

Two different instances where the little man refused trying to drop him on a road. One, the blue line basically missed between two points about 1 Km of a fairly main road - a bus route. I took a picture from the bus and wanted to locate it with Grid References & what3words - in the gap! Another stopped at a T junction and turned into the junction but wasn't available on the straight route! OK that is the route the car took. But the main road? Nowhere to turn round safely at one end of the discontinuity, and barely wide enough for two buses on quite a steep rise. Uley Bury - the hill fort above should indicate the steepness.

Time to report the anomalies.


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Subject: RE: BS: How reliable is Google Earth?
From: Newport Boy
Date: 19 Sep 18 - 10:01 AM

I use gridreferencefinder.com to get OS coordinates - it gives Postcodes & lat/long and also links the point to Google maps and Bing.

I find your ST 57750 73935 to be outside 4 Melrose Place. On Streetview, No 7 can be seen above the door and No3 is identified on the bins. I can't see the paving flags on any of these - they're all hidden by cars.


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Subject: RE: BS: How reliable is Google Earth?
From: Mr Red
Date: 20 Sep 18 - 04:19 AM

ST 57750 73935 was from an OSGR Android app. I neglected to read the tolerance but it is usually between 3M and 7M, depending on the number of satellites locked-onto. My impression from where I stood was more middle of the length of the street to the bend. Between Goggle & Bing the best fit is where Goggle gives 9 but that can be the other side of the road IME. Bing streetview gave me 42 Whiteladies. The flagstones I refer to were new on my pic and on Bing. Goggle had them with irregular cracks.

I would guess Goggle photos are several years old and the owners decided to re-new the footpath. Luckily the Bench Mark was between cars so the pic shows the two house footpaths. They are the only ones vaguely similar in all renditions. The house number is not that important (which don't read on my Streetview), what is, is the what3words location - cowboy.limit.codes - which uses Goggle Earth and streetview so I can show (hopefully) the location to within 3 Metres. When looking for a strange mark on a kerbstone - even 3 metres can make it difficult.

It is just this depth of puzzle that makes the hunt entertaining. For me anyway.

Thanx 4 the help folks.............


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Subject: RE: BS: How reliable is Google Earth?
From: Helen
Date: 20 Sep 18 - 04:02 PM

Joe, it didn't quite get to the "it's Hubby or the boat" situation, but he did sell the boat eventually so I let him stay. LOL


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Subject: RE: BS: How reliable is Google Earth?
From: Newport Boy
Date: 30 Sep 18 - 03:10 PM

I was in the area today, so hopped out of the car to look. Your benchmark is outside No 4 Melrose Place, at the grid ref you give. Paving slabs as your photo.

I find that Google addresses given on Streetview are very approximate, to put it mildly.

Phil


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Subject: RE: BS: How reliable is Google Earth?
From: Mr Red
Date: 01 Oct 18 - 05:10 AM

Thanx Pal.
I use what3words.com which uses Goggle. But I also installed Goggle Earth, years ago, and guess what? The aerial view is definitely different. I was looking at Crabtreehill Cinderford (Forestry Commission), and Goggle Earth shows tree clearance in the area and the Trig Point can be discerned if you know where it is. what3words.com shows it still heavily wooded. So there are two Goggles. Street view is nominally the same as far as I can determine but via what3words, on a BT (notso) Hotspot, it can just display a black and stall when all is slow. Whereas Goggle Earth 3 seconds later can show the streetview.

As I haven't updated Goggle Earth, maybe I won't in case it has wondrous new features like bloatware.


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Subject: RE: BS: How reliable is Google Earth?
From: Stilly River Sage
Date: 01 Oct 18 - 12:36 PM

It is possible to go back and forth between Google Earth and Google Maps and see different versions (aerial photos) of an area taken different years. There is a map link on my campus to a new building that if you click on the satellite view still shows the parking lot it was built on. Addresses are approximate - I usually try to find an address on the street and count up or down from there if I don't see it on my destination building. (This reminds me that I have intended to update the stencilled number at the end of my front walk and driveway).


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Subject: RE: BS: How reliable is Google Earth?
From: FreddyHeadey
Date: 04 Oct 18 - 06:58 PM

I would have plumped for
https://map.what3words.com/models.shell.marker
or
https://map.what3words.com/finger.frost.silent

??

The house numbers were all to pot on Google.
The houses on that side are actually numbered 1-13.
The houses on the other side come back clockwise 14-19.

I submitted some corrections. It'll be some time if\before they get accepted.


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Subject: RE: BS: How reliable is Google Earth?
From: FreddyHeadey
Date: 04 Oct 18 - 07:54 PM

I had a query with Google maps some years ago (bus times)and it turned out the had different data information for the pc version v the Android version.
Well Bing on my Android gives me the cracked concrete at StreetView, not paving slabs.
http://binged.it/2pDGNqZ
maybe it's different on your machine.
Do you remember that big ash tree when you took the photo?
Lots of green ash leaves in the gutter. Maybe they'd done some tree surgery. In your photo the wall looks recently rebuilt & if those paving slabs are 2x2 it would make it wider than my bing view.
The bing view also confirms the position of the water stop-tap lid. (ok, maybe every house has one similar!)


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Subject: RE: BS: How reliable is Google Earth?
From: Donuel
Date: 06 Oct 18 - 04:28 PM

I doubt it exists but wouldn't LIDAR of the world be great?
You would be able to see ancient cities.


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Subject: RE: BS: How reliable is Google Earth?
From: Mr Red
Date: 07 Oct 18 - 04:09 AM

I bet DARPA has it done.

And the GRU.


They know where you buried the body!


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Subject: RE: BS: How reliable is Google Earth?
From: FreddyHeadey
Date: 12 Oct 18 - 04:27 AM

B4066 at Uley...
On my Android tablet ordinary googlemaps, shows a StreetView as
https://goo.gl/maps/zXubwzdfB6v
Is that the one?

It looks like fairly new tarmac, I wonder if there were roadworks when googleEarth was there?


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Subject: RE: BS: How reliable is Google Earth?
From: Mr Red
Date: 12 Oct 18 - 05:17 AM

Yea, the road is narrow but a good surface, laid two or three years ago if I remember. I have traversed on Goggle Earth much of the road and there is no hint of roadworks recorded. No footpaths. I found the Milestone, but the traffic was pretty frequent and fast for such a backwater. So I didn't find the Bench Mark. Next time with a trowel, and a decent camera. I was on an advertising mission and forgot to pack a decent camera or the phone with the OSGR app anyway.
However, for the sake of a day's wrestling with VBA & JavaScript I now have an HTML page local to the OSGR phone that tells me where to look within a radius - as long as I pack the right gear! I would normally produce a map with dots on it, but that needs preparation, and a decent broadband.

You wouldn't be a Milestononaut would you? see www.msocrepository.co.uk/search-2


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Subject: RE: BS: How reliable is Google Earth?
From: FreddyHeadey
Date: 12 Oct 18 - 07:04 AM

msocrepository ...
too fascinating.
I dare not go there.


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Subject: RE: BS: How reliable is Google Earth?
From: Mr Red
Date: 15 Oct 18 - 04:10 AM

be fascinated, be very fascinated.

:)


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Subject: RE: BS: How reliable is Google Earth?
From: Black belt caterpillar wrestler
Date: 15 Oct 18 - 04:37 AM

Just been checking, Google earth and Google maps are displaying the same image for my house now, taken this summer, probably first week in July as the car we went to Ireland in is not there but a crate of paving stones that I unloaded as soon as we got back is.

Last time I looked there was a winter scene with melting snow from a couple of years ago.

Robin


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