MapForums

Hi,

iam using Mappoint 2009 with VB.Net,i have to read the GPS output and plot the directions the vehicle moved and to find the stops where the vehicle has stopped ,these things has been completed already ,now the problem is i have to find the stop points where the vehivle stopped because of road traffic.any ideas or suggestions?

Thanks,
Rajesh

I'm not sure if I understand you correctly? You have found all the stops, and you wish to distinguish traffic stops from scheduled stops?

If so, then just compare the stop locations with the scheduled stop locations!


If you are still trying to find all stops, then look at the relative movement between "fixes". Compare distance and time. Also look at (or calculate) velocity. If it slows to a stop for more than a few seconds, then you have a traffic stop!

Richard

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Hi Richard,
Thanks for your reply.if you dont mind can u explain little bit clearly.

Thanks,
Rajesh

Rajesh,

Maybe u can post some screenshots and sample data to illustrate what u need,if you dont mind. It is not clear what u are asking.

Thanks,
Eric

__________________

Hi Eric,
I have found all the stops now i want to find the traffic stop i.e., i want to distinguish between the scheduled stops and the traffic stops.
hope u might have understood now

Thanks,
Rajesh

The Gps output looks liek this

$PSRFTXTAPSI Ver ASM2525LP02*44
$PSRFTXTCORE Ver GSW3.2.4Pat1_3.1.00.12-SDK001P1.00 *48
$PSRFTXTTOW: 0*09
$PSRFTXTWK: 1399*4B
$PSRFTXTPOS: 6378137 0 0*06
$PSRFTXTCLK: 96250*09
$PSRFTXTCHNL: 12*5F
$PSRFTXTBaud rate: 9600 *6A
$GPGGA,235947.059,,,,,0,00,,,M,0.0,M,,0000*54
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,235947.059,V,,,,,,,281006,,,N*42
$GPVTG,,T,,M,,N,,K,N*2C
$GPGGA,235948.068,,,,,0,00,,,M,0.0,M,,0000*59
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,235948.068,V,,,,,,,281006,,,N*4F
$GPVTG,,T,,M,,N,,K,N*2C
$GPGGA,235949.053,,,,,0,00,,,M,0.0,M,,0000*50
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,235949.053,V,,,,,,,281006,,,N*46
$GPVTG,,T,,M,,N,,K,N*2C
$GPGGA,235950.053,,,,,0,00,,,M,0.0,M,,0000*58
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,235950.053,V,,,,,,,281006,,,N*4E
$GPVTG,,T,,M,,N,,K,N*2C

and i read this data and write to another txt file as

bearing, longitude, latitude, speed,Dtime
352.68, -93.46372, 45.01651, 19.60927416,7/1/2009 3:06:52 AM
352.68, -93.46372, 45.01651, 19.60927416,7/1/2009 3:06:52 AM
352.68, -93.46372, 45.01651, 19.60927416,7/1/2009 3:06:52 AM
352.68, -93.46372, 45.01651, 19.60927416,7/1/2009 3:06:52 AM
355.12, -93.4637283333333, 45.01659, 20.05807797,7/1/2009 3:06:53 AM
355.12, -93.4637283333333, 45.01659, 20.05807797,7/1/2009 3:06:53 AM
355.12, -93.4637283333333, 45.01659, 20.05807797,7/1/2009 3:06:53 AM
355.12, -93.4637283333333, 45.01659, 20.05807797,7/1/2009 3:06:53 AM
355.12, -93.4637283333333, 45.01659, 20.05807797,7/1/2009 3:06:53 AM
355.12, -93.4637283333333, 45.01659, 20.05807797,7/1/2009 3:06:53 AM
355.12, -93.4637283333333, 45.01659, 20.05807797,7/1/2009 3:06:53 AM
358.09, -93.46373, 45.0166766666667, 21.02473233,7/1/2009 3:06:54 AM
358.09, -93.46373, 45.0166766666667, 21.02473233,7/1/2009 3:06:54 AM
358.09, -93.46373, 45.0166766666667, 21.02473233,7/1/2009 3:06:54 AM

from this i have to plot pushpins

thanks
rajesh

How do you know what are the scheduled stops?

Eric

__________________

The scheduled stops are customer's address ,that we have to compare later.but now i want to find all the stops and find specifically point out trafic stops and other stops.

Do you have lat/lon of the customer addresses? You could do a proximity search to see of a stop is say within 0.1 of a mile of a customer address.

How else are you going to identify which stops are scheduled stops?

Eric

__________________

Hi Eric,
Now iam not worried about scheduled stops.we have the details about that in our database and the it is separate application.main thing is i want to find the traffic stops form the sample data i have mentioned above

Thanks,
Rajesh