I've just made a long car travel and Waze gave me great alerts about the road quality. I'd like to share this info with the oversight authorities. Some of the roads were really bad and Waze informed about the road spots that needed maintenance.
Is it possible to extract the alerts in a route?
Waze has the Waze for Cities program that allows governmental institutions to retrieve the alerts from Waze users. Some cities already use this program to see where potholes are reported most often, to get an idea of where they need to focus on their road repairs. But it's not a plug-and-play system that just gives them that information. There is access to the data feeds and a way to start gathering historical data from that point on, but some of it requires technical knowledge to set it up.
Retrieving your own personal alerts can be done by downloading your Waze data. The downloaded archive contains your most recent alerts and interactions with the system, which might be enough information to share the data with the government(s) in a more "traditional" manner like a contact form or e-mail.
Related
For a project at my university I have to collect information about Google Indoor Maps. I spent several hours searching information about how Google Indoor Navigation really works. I've found several links on how to create Google Floor Plans like this:
http://support.google.com/gmm/bin/answer.py?hl=en&answer=1685896
And how you can improve location accuracy with the Google Maps Floor Plan Marker app:
http://support.google.com/gmm/bin/answer.py?hl=en&answer=2667756&topic=1685871&ctx=topic
They say the app collects public broadcast data. But nowhere information about which information is collected and how. Several discussions here and a few articles I found say that google uses wifi-access points and the cellular antennas for indoor positioning. But I couldn't find any official information from Google, which I can use in my project.
Can you suggest me where I can find answers to the following questions:
How does the Google Maps Floor Plan Marker really work? Which information is collected and how? A official technical Google paper would be nice, so I can use that for my work.
How can I increase the accuracy of the Google indoor navigation, by adding Wifi Access Points, Bluetooth stations or other technology?
How can I add additional information like Emergency exits and toilets to a floor plan, so the user can navigate with his smartphone to this special points?
Is it possible to add information about rooms, so the user can tap with the finger on them to get additional information? For Example which department is situated in this room and so on?
I found a lot stuff about indoor positioning and indoor navigation. But nothing about how google uses them.
Thanks in advance.
This project just provides maps for indoor places. It doesn't do anything special to augment navigation in these places beyond the standard (GPS, WiFi, etc).
When they talk about (augmenting) positioning with Wifi and Cellular data, they are talking about the same stuff they use on the regular Google maps. This data is collected from cell tower info, and the Wifi stuff is sniffed from the Google street-view cars and then augmented by user-data as people with devices come into contact with these devices and send info back to Google.
It is not very accurate - or even accurate as GPS. It is kind of a "ballpark" estimate. For example, if a Google street-view car detected your WiFi signal when it drove by your house - if you had no GPS, and Google Maps saw your WiFi box, it could estimate that you were somewhere within a few hundred feet of where the Google Street View car detected the signal.
Not as accurate as GPS - but not too bad if you conciser within a few hundred feet better than "no idea". In short - these sources to not give you better or more refined positioning of indoor places. They would be good - for example - to be able to tell you that you are in that particular building if you were inside, and out of GPS coverage.
Indoor positioning uses WLAN interface. To estimate the real-time location of a user, location systems have to perform a number of steps and various calculations. The calculation of more than one distance from several Access Points (APs) could be used to estimate the exact
location.
The main principle states that signal strength at the receiver is inversely proportional to the square of the distance that the signal travels.
RSS fingerprinting method is used which is based on recording and sampling of patterns of radio signals in specific environment called as pattern recognition or fingerprinting.
Since this post is a little old I thought I would still add my thoughts. First of all you can make edits for your own custom maps using MyMaps. As the previous answers stated Google Maps uses cell data, wifi data, gps, etc for tracking. It can also use phone sensor data such as your accellerometer. With the current level of wifi infrastructure it can actually be quite accurate using a method of wifi fingerprinting (The more access points the more accurate it will be given they are effectively positioned). There are several scholarly articles demonstrating its viability down to a couple meters of accuracy. I would suggest reading an article on RSSI fingerprinting. Also check the google maps developer documentation for more detail on editing map information.
Also I was reading that they will be using light detection for additional indoor accuracy (not sure if implemented yet).
I want to know how to read the traffic information from google map as here in the following image. Google only displays the traffic layer by red, green, and yellow lines. But how can an application identify the color and find out how much traffic there is between source and destination.
Visually users can see with their eyes and identify the colors but what about the application?
Google Maps API does not expose traffic data. Your best bet is probably to find a different solution for your traffic data. Microsoft MapPoint might meet your needs.
UPDATES to answer questions in comments:
Whether there is a free service may depend on what geographic area you are concerned with. I imagine (but don't know for certain) that there may be places where government entities make the data available. Or maybe not. Regardless, generally, no, you can't get this data for free. It is expensive and challenging to collect, and no doubt Google pays someone a substantial fee for the data (and is probably forbidden from distributing raw data).
Meanwhile, the data Yahoo! offers is completely different from Google's traffic data. Yahoo! provides information about accidents, road work, etc. Google's information has to do with the actual speed of vehicles on the roadway. As far as I know, Google does not provide that information with the Maps API.
In any event, Google's raw traffic data is unavailable to your application.
As always, what various services offer can and will change and this answer may not age well. But it is, to the best of my knowledge, accurate at the current time.
I am looking for a map application with the following:
Windows based.
City/Town street maps are downloaded to computer (i.e. does not required a wireless internet connection to get the map images real-time).
Uses GPS on the computer via comport.
Allows me to visually track where I am on the map as I drive around.
We actually have written our own GPS application which uses ESRI shapefiles. Periodically we get complaints from customers saying the GPS is significantly "delayed" (i.e. the icon showing current location is 2-3 blocks behind the true location).
To help isolate whether it might be hardware related or our software, I would like to test alternative applications to see if they have the same delay.
I personally used Microsoft Streets and Trips on a couple of road trips. The mid-level package even comes with a GPS receiver.
If you just want tracking, then there are many applications, such as deLorme, and Microsoft's Street and Trips. S&T's big brother, MapPoint allows a programming interface, which could allow you to test various things.
None of the consumer products will support ESRI formats, although the business-oriented MapPoint can import Shapefiles using a third party add-in (yes I sell one, but there are others).
MapPoint and Streets&Trips both come with road data on DVD. The road data cannot be changed with a download.
I'm struggling to understand what you would get from the Royal Mail if you bought their PAF file dataset of UK addresses.
I was expecting that PAF was some form of database which you would host yourself, and the Royal Mail provide APIs into that database.
However, after reading this, I'm presuming that all you get is a series of files containing the data. I can't find any obvious information regarding an API.
Are there any libraries available to help you handle these files, especially from Java?
Do you have to parse the file yourself and stick it in your own database, so you can do quick lookups from an application?
If all this is true, why would you ever bother buying this off the Royal Mail? Aren't all the third party providers, with their web based APIs, just far simpler to use - in terms of both programming and data maintenance?
Apologies if I've missed the obvious on this one, but I find the Royal Mail site lacking in information. I'm beginning to think that I've misunderstood their PAF file offering.
The postcode address file (PAF) is a set of data-files provided by Royal Mail that contain all address in the UK. My understanding is that it's normally updated every three months.
I'm aware of two companies that have products that supply APIs into the PAF data: QAS and Capscan. With these you're able to search addresses to find missing postcodes or vice versa. APIs include both web-based solutions and native calls.
Why you'd buy direct from Royal Mail? Because you'd want to write your own query tools rather rely on third party products or you want to do data-mining that other products can't provide.
Could you import into a SQL database? Yes, but only after you'd written your own PAF file parser.
Why use these over web-based tools? Because you're sitting behind an intranet, have limited internet access from servers, restrictive licensing from any web-based solution, etc.
It's all in wikipedia
http://en.wikipedia.org/wiki/Postcode_Address_File
Check out www.PostcodeAnywhere.co.uk a web-service based lookup site. Also desktop lookup app available. Decision likley to be based on lookup volume, ease of use, costs, etc. But for low-medium volumes, simple implementation in a few minutes and 'automatic' maintenance built-in.
I've subsequently found this page where you can order a sample data set. It states:
Please be aware that Raw Data contains no software and the data must be processed for use in IT applications. If you do not wish to program PAF or Postzon then we can supply it to you in a pre-written application known as UK Addresses on CD
The UK Addresses on CD page goes on about something called "UK Addresses Utilities", and it states:
The UK Addresses CD also contains a set of dynamic link libraries and provides the ability to interrogate the address datasets programmatically through a .NET 2.0(+) DLL.
I have written something in C# that can parse these files into SQL Server
https://github.com/Telexx/Royal-Mail-PAF-Parser/
How do popular routing gps/phones/mapping web sites update their route information?
And do any phones send back data based on the users actual trip to allow the system to update route information?
What do you mean with "route information"? The map data they use to calculate routes is usually provided by companies Like NavTeq. They provide updates to the data on a regular base.
Concerning data collected by users, TomTom provides so called "IQ routes" which are based on actual traffic data. Meaning when you travel at 5am the system will likely suggest a different route compared to travelling during rush hour.
The required data was collected by the TomTom systems but AFAIK users have to manually upload it to TomTom or at least agree to provide the data when they do an online update of their system.
The two major players in this world are TeleAtlas, a TomTom subsidiary and NavTeq, a Nokia subsidiary.
IMO TomTom/TeleAtlas has the most advanced system. They operate a real-time system for measuring traffic flows, HD traffic. This takes into account data from other HD Traffic users, but also anonymixed data extracted from the GSM network. Now, in addition to the real-time view this provides, TeleAtlas also compiles a statistical average out of this; TomTom sells that as IQ routes.
Now it follows logically that if there's a lot of new traffic across a river, then probably someone built a bridge there ;)
In addition to HD Traffic and IQ Routes, TomTom also allows their users to report map erros and updates with MapShare. For many classes of changes (e.g. one-way roads or blocked roads, or changed roadnames), TomTom can use MapShare to immediately distribute updates for their maps without issuing a full map update. As a TomTom subsidiary, TeleAtlas presumably has access to these reported updates as well.