AGPS FAQ for the Application
Table of Content (Version 2.x and common questions)FAQ Version 2.x and common questions
The audio playback for Guidance Actions will not affect the AGPS performance. Only if you try to playback a long audio file on the Guidance Types. The Guidance Type audio plays back before the Guidance Action for indicating the type of the guidance term. If you try to playback a long audio file, it will lock the AGPS until audio is finished. However, the Guidance Action plays back right after the Guidance Type but will not lock the AGPS. Therefore, we suggest you to mute the Guidance Type audio since it is not important anyway.
The warning time is the time before the arrival of the up-coming driving maneuver point to display the driving assistant warning window. AGPS uses the current speed to calculate the time to the maneuver point. Therefore, your GPS must support NMEA183 RMC sentence. We suggest that you set the time to at least 15 seconds. In version 2.x, there are hi and lo speed warning times for freeway (super highway) and local road configuration. Just set the longer time for the high speed. Also set up the high/low speed boundary for your convinience.
or
Just insert a destination (or more) in the route planer, then hit [R] key when AGPS window is focused (route from here feature).
On the Options tab, decrease the "Track Position Every..." down, till it shows "auto. Now the map will redraw only when the cursor is about to out of screen. Note that this feature only work for MapPoint 2002.
"True Heading" will give you a heading value starting from absolute north (True North pole). However, "Magnetic Heading" give you the value starting from the Earth's Magnetic North Pole, which is different from the "True North Pole". Magnetic heading gives the same as the value displayed by a compass. It also called "Compass Heading". Magnetic heading is used by the airplane and marine (ship) navigation. Since earth's magnetic field will change from time to time, the routine in the AGPS will calculate accurate compass heading till year of 2005. After 2005AC, you need to update AGPS for the new routine. If not updated after 2005AC, it will still be accurate enough for general purpose. It should not be used for some very accurate navigation application. (AGPS should not be used for such purpose anyway).
FAQ Version 1.0.x and 1.1.x and common questions
It is impossible to detect the cursor out of screen during tracking in the MapPoint 2001's internal software. If you have MapPoint 2002, please install the version 1.3 and up, which can turn the tracking factor to "Auto". It can minimize the MapPoint redraw. The followings are the tips for adjusting the tracking factors:
Your CPU processing power may cut as high as 50% in the power saving mode. The AGPS needs very little processing power but the MapPoint does not. When the AGPS asks the MapPoint to lay (or remove) one pushpin on the map, the MapPoint needs at least 200MI to finish the task. Therefore, even though your Pentium 200 notebook running on the full power mode, it takes around 1 second to complete the lay/remove pushpin task (in MapPoint2001). At the same time, AGPS needs to processing the GPS data and refresh the screen (needs less than 15 MIPS). Therefore, if you ask AGPS to lay the pushpin every second, the AGPS barely make it within a second on a slow Pentium 200 machine. If at the same time you ask MapPoint to scroll or zoom-in, the app seems not-responsive at all. Please configure the Plot Trail parameter to use the distance to plot a trail, it will greatly reduce the computing power needed.
Download the latest version 0.9.30 or later. Click on the compass and select the "Calculate the route from current position" or press the short-cut "R". DO NOT add the "current GPS position" pushpin into the route waypoint list manually. The MapPoint takes forever to calculate a route and won't fine a route if the waypoints are the moving targets during the route calculation. The route will also disappear if the waypoints are moved (if the current GPS position is in the list). Only use the feature that AGPS provides will solve the issue and is convenient to use too (by simply press "R" while on the road)
What's difference between the MapPoint(MP) and Streets and Trips (S&T) and/or Auto Route (AR)? Can AGPS support the S&T and AR?
The difference between the MP and (S&T
/AR) is that MapPoint supports the data analysis, OLE automation for the
custom add-ins, and a HUGE price difference ($250USD versus $50USD, why?
probably because of the map usage license from NavTech.). You
can check the comparison sheet between MP and S&T/AR
at http://www.microsoft.com/streets/business/
Therefore, at this moment, the AGPS can't be added into the S&T
or AR. (Neither is there a way to write a custom add-in for
AR/S&T legally ..yet) I have confirmed from Microsoft that there
is no plan to add such feature and GPS enhancement to the S&T/AR
because of the contractual limitation. However, you can download a 60 day
trial
version of MapPoint from Microsoft.