Posts: 6,905
Threads: 32
Joined: Oct 2014
Reputation:
224
03-21-2018, 01:13 PM
(This post was last modified: 03-21-2018, 01:35 PM by Canard.)
Yes, 600 mm vs. 750 mm! KevinT pointed this out to me at the first unloading (501). I thought they had looked a little different during construction, but always attributed it to an optical illusion of being further away.
"Back in the Day", some roller coaster manufacturers, like Arrow, Vekoma and Meisho, used to do this with the track ties (ledgers) on their coasters at areas of track subject to higher G-forces. Most famously perhaps was on the giant Pretzel Knot inversion on Moonsault Scramble at Fuji-Q Highland (RIP )
Re: Imagery; this is awesome! Full installation at the OMSF now, too! What's the deal with this site vs. Google Maps? I had always just assumed there was only one "Satelite Camera" gathering all this data for public, is that not the case?
Hey Square! Has your friend got that radio thing hooked up online yet? If not, I’m dropping $500 this weekend on one, I can’t wait any longer.
Posts: 419
Threads: 1
Joined: Jun 2015
Reputation:
32
(03-21-2018, 01:13 PM)Canard Wrote: Re: Imagery; this is awesome! Full installation at the OMSF now, too! What's the deal with this site vs. Google Maps? I had always just assumed there was only one "Satelite Camera" gathering all this data for public, is that not the case?
Imagery is purchased, sold, and licensed in various terms to various parties at various times. Satellites might take some of it, and airplanes might be used for other parts. I had a lot of fun fiddling around with the base layers in the Region's GIS to see old aerial photography of the region, before they inexplicably removed it (probably when they switched to the newer http://maps.waterloo.ca front-end)
This particular dataset is "World Imagery" which has 30cm resolution in most of North America: https://services.arcgisonline.com/ArcGIS...apServer/3
At this resolution it's definitely aerial imagery. Satellite imagery is usually above 1m resolution.
Posts: 4,407
Threads: 15
Joined: Aug 2014
Reputation:
125
I'm actually studying remote sensing this term so I should be able to answer some of that (though chutten did a fine job).
Google's an interesting beast because their city imagery these days goes way beyond the typical - as you easily find in their 3D view. This requires multiple passes in differing directions by planes equipped to both take pictures and do Lidar scans; once all that is taken it then would go through a ream of back-end processing to build the 3D environment that can be viewed from multiple angles in their web app.
This ESRI imagery, by contrast, is a simple aerial camera pass which can be done more often, hence it being more up to date.
Posts: 39
Threads: 0
Joined: Nov 2017
Reputation:
5
(03-21-2018, 03:48 PM)chutten Wrote: (03-21-2018, 01:13 PM)Canard Wrote: Re: Imagery; this is awesome! Full installation at the OMSF now, too! What's the deal with this site vs. Google Maps? I had always just assumed there was only one "Satelite Camera" gathering all this data for public, is that not the case?
Imagery is purchased, sold, and licensed in various terms to various parties at various times. Satellites might take some of it, and airplanes might be used for other parts. I had a lot of fun fiddling around with the base layers in the Region's GIS to see old aerial photography of the region, before they inexplicably removed it (probably when they switched to the newer http://maps.waterloo.ca front-end)
This particular dataset is "World Imagery" which has 30cm resolution in most of North America: https://services.arcgisonline.com/ArcGIS...apServer/3
At this resolution it's definitely aerial imagery. Satellite imagery is usually above 1m resolution.
The Region still has several layers of old imagery on their GIS ( http://gis.region.waterloo.on.ca/Locator) 2000 - 2016.
Posts: 673
Threads: 2
Joined: Oct 2014
Reputation:
25
(03-21-2018, 01:13 PM)Canard Wrote: Yes, 600 mm vs. 750 mm! KevinT pointed this out to me at the first unloading (501). I thought they had looked a little different during construction, but always attributed it to an optical illusion of being further away.
"Back in the Day", some roller coaster manufacturers, like Arrow, Vekoma and Meisho, used to do this with the track ties (ledgers) on their coasters at areas of track subject to higher G-forces. Most famously perhaps was on the giant Pretzel Knot inversion on Moonsault Scramble at Fuji-Q Highland (RIP )
Re: Imagery; this is awesome! Full installation at the OMSF now, too! What's the deal with this site vs. Google Maps? I had always just assumed there was only one "Satelite Camera" gathering all this data for public, is that not the case?
Hey Square! Has your friend got that radio thing hooked up online yet? If not, I’m dropping $500 this weekend on one, I can’t wait any longer.
I just sent them another E-Mail. Just be aware that the Region will go to a new radio system in the fall this year, and what I'm hearing that all talkgroups will be encrypted and will be silent! I'm hoping myself that only the police will go silent!
Posts: 6,905
Threads: 32
Joined: Oct 2014
Reputation:
224
Nooooooo! Although by then we’ll be in service so it won’t be as critical. Right now, it’s just so hard to track down where they’re at, with only a single LRV out. It would save an hour of driving the whole line trying to find them (and probably missing them) to go watch what’s going on.
Thank you for trying again for us all.
Posts: 673
Threads: 2
Joined: Oct 2014
Reputation:
25
No problem, it's been over a week, so not sure what the problem is with my contact. Also two vehicles were testing today, 502 and 504!
Posts: 6,905
Threads: 32
Joined: Oct 2014
Reputation:
224
Whaaaaaaaaat!! Like coupled together? Or separately at two different points on the line?!
Posts: 673
Threads: 2
Joined: Oct 2014
Reputation:
25
502 was testing on the track from Weber St overpass to Northfield Station, 504 was in Uptown Waterloo area?
Posts: 667
Threads: 0
Joined: Feb 2017
Reputation:
26
(03-21-2018, 05:06 PM)Canard Wrote: Whaaaaaaaaat!! Like coupled together? Or separately at two different points on the line?!
I'm wondering if they have tested them coupled together in Kingston
Posts: 2,865
Threads: 3
Joined: Mar 2015
Reputation:
95
(03-21-2018, 05:06 PM)Canard Wrote: Whaaaaaaaaat!! Like coupled together? Or separately at two different points on the line?!
I really want to see that.
When are they supposed to start coupling them? Was it 2024 or something like that?
Posts: 6,905
Threads: 32
Joined: Oct 2014
Reputation:
224
Yeah, something like that, but part of the testing will have them doing it, too. One pulling another, them moving together, etc...
Posts: 1,101
Threads: 6
Joined: Aug 2014
Reputation:
99
03-22-2018, 09:03 AM
(This post was last modified: 03-22-2018, 09:03 AM by Coke6pk.)
(03-21-2018, 04:07 PM)KevinL Wrote: I'm actually studying remote sensing this term so I should be able to answer some of that (though chutten did a fine job).
Google's an interesting beast because their city imagery these days goes way beyond the typical - as you easily find in their 3D view. This requires multiple passes in differing directions by planes equipped to both take pictures and do Lidar scans; once all that is taken it then would go through a ream of back-end processing to build the 3D environment that can be viewed from multiple angles in their web app.
This ESRI imagery, by contrast, is a simple aerial camera pass which can be done more often, hence it being more up to date.
A few years back I had the opportunity to check out one of the aircraft that does photography for Google Maps when it was here at YKF. Its a small plane, but the amount of electronic equipment crammed into the back was unbelievable. I'm still surprised its able to take off with the amount of equipment they had back there....
Coke
Posts: 673
Threads: 2
Joined: Oct 2014
Reputation:
25
@Canard My contact just e-mailed to say they will work on the live online feed of the LRT talkgroup this weekend! Fingers crossed for next week!
Posts: 810
Threads: 5
Joined: Nov 2015
Reputation:
39
Looks like the region is finally acknowledging the spring estimate is no longer realistic. Official announcement on April 18.
http://www.570news.com/2018/03/22/region...an-relied/
|