[gps-talkusers] Re: GPS 4.0/4.2 possible bug

  • From: Charles LaPierre <charles@xxxxxxxxxxxxxxxx>
  • To: gps-talkusers@xxxxxxxxxxxxx
  • Date: Mon, 17 Dec 2007 14:40:51 -0800

Hello Matt,
Well I must say I am impressed that you found this as none of my beta testers had, although I can't imagine you would be walking that 60 plus mile pedestrian route (smile).
The new Richmap engine actually can calculate a pedestrian route to this location, the problem now lies with the amount of memory on the Braillenote. The reason why this worked under 4.0 and now fails to create a route under 4.2 is that now under 4.2 we are actually creating better pedestrian routes and we search all streets to your destination. We now pick the best pedestrian route and amount of memory required to exhaustively search all streets along that 60 miles is just too much for the mPower and PK. There were pedestrian routes created under 4.0 whos total route distance was 100 miles where if it looked at all streets it would realize there was a 10 mile route available. So this is why we now do an exhaustive search which in the end give much better pedestrian routes over all. The downside to this as you have just found out is we are now limited to the max distance we can create these optimized pedestrian routes.
In light of this issue Sendero recommends that you should avoid creating pedestrian routes whose distance to the destination is greater than 10 miles on the PK and greater than 25 miles on the mPower. This information will be added to the readme as well. 

Thank you
Charles.


At 10:26 AM 12/17/2007, you wrote:

Hey Charles,
Just installed the new GPS version, and I have been comparing route calculations between 4.2 and 4.0. On both units, we set our virtual position to the intersection of West main street and northampton road in Kalamazoo Michigan. (There is a charter one bank on the corner.) Then, we set our destination to 10500 Lincoln Lake RD ne in Oakfield area, MI and compared routes. The vehicular route was several seconds faster on the BN running 4.2. However, when we attempted to calculate a pedestrian route for fun, the 4.2 unit was "Unable to create a route,' whereas the 4.0 Bn created one just fine. Is this a bug in 4.2, or is this route physically impossible using the new route engine? 
Thanks
Matt
www.BlindBargains.com
Deals, news, and resources for the blind and visually impaired
----- Original Message ----- From: "Charles LaPierre" <charles@xxxxxxxxxxxxxxxx> 
To: <gps-talkusers@xxxxxxxxxxxxx>
Sent: Monday, December 17, 2007 12:53 PM
Subject: [gps-talkusers] Re: Announcing Sendero GPS version 4.2!



Hello everyone,
I am really excited about this release and can't wait for you all to get it. If you have an SMA for GPS then just go to the Sendero downloads website and download your new product now! The mysendero website is www.mysendero.com and click on "Map and Software Downloads" link.
Once you log in using your BrailleNote's serial # and password you will have the option to download GPS 4.2 for that BrailleNote. You can also check your SMA's remaining by clicking on the "update / view user information" link.
Important note: There are no new maps or POIs in this release, so you don't have to bother downloading your maps again for 4.2 if you already have them under 4.03. 

Enjoy GPS 4.2 everyone and Happy Holidays!
Charles.


At 08:48 AM 12/17/2007, you wrote:

Experience location independence with the new Sendero GPS version 4.2

DAVIS, CA, (December 17, 2007)
Sendero Group, inventor of the first and most powerful accessible GPS for the blind, is pleased to announce the release of Sendero GPS Version 4.2 with 20 new software enhancements. Sendero GPS has ten times the US points of interest content versus other accessible systems. The mPower Braille or regular keyboard interface is easy to use and the little PK weighs less than one pound.
New Sendero GPS users will enjoy even easier and more automatic GPS navigation while preserving the power of a keyboard interface for searching and exploring one's environment.
In addition to its wealth of functions and simple operation developed over the past 8 years, Sendero GPS Version 4.2 now includes:
* Audio and text files can now be associated with points of interest. Navigate to a restaurant and then hear or read its menu. Give points of interest voice annotations if you like.
* Surrounded by skyscrapers and getting poor GPS readings? Tell Sendero GPS to go into City Mode and experience more consistent heading announcements.
* When you come out of a subway and know which way you are facing but GPS doesn't, you can manually set a heading. GPS will take over once you start moving. 

* A new map engine improves route calculation.

* Save route directions to a file for printing, embossing or sharing.

* The Sendero LookAround mode now announces street, city or state changes.
To learn more about version 4.2, visit, <http://www.mysendero.com/>http://www.MySendero.com.
See a demonstration of version 4.2 at upcoming conferences such as ATIA and CSUN. For more information or to order, call: 1-888-757-6810 
Email:  <mailto:GPS@xxxxxxxxxxxxxxxx>GPS@xxxxxxxxxxxxxxxx


Charles M. La Pierre CTO
Sendero Group, LLC

Lat. 37 15' 25" N  Lon: 121 53' 04" W





Charles M. La Pierre CTO
Sendero Group, LLC

Lat. 37 15' 25" N  Lon: 121 53' 04" W

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