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nasirgul · #11 (**permalink**) 05-14-2008

Well its more like a dummy simulator which keeps on updating new location of latitude & longitude from the previous inserted lat & lon by the user(as I already told you in this case i am not using any hardware or any txt file). Its just looking like data comes from original GPS and it act as dummy simulator.I tried for it but cant able to get how I can do it.

**Eric Frost** · #12 (**permalink**) 05-14-2008

How far have you gotten or do you need help to start the code?

Where are you stuck?

Eric

nasirgul · #13 (**permalink**) 05-14-2008

I need some idea how I can start to do it.
Thanks.

**Eric Frost** · #14 (**permalink**) 05-14-2008

I think the easiest way to get started with MapPoint programming is automating it through Excel VBA... there are some tutorials here:

Working With Excel and MapPoint - MP2K Magazine

Eric

nasirgul · #15 (**permalink**) 05-14-2008

I am working on my project from the last month using C# and interfacing with mappoint. I know basics. Just want to know any idea as I don't know how to get new lat, lon from calculation by inserting lat,lon & speed. Please give me hint.

**Eric Frost** · #16 (**permalink**) 05-14-2008

OK given roughly:
one degree of longitude is 50 miles or 80 km
one degree of latitude is 65 miles or 105 km

Starting position Lat: +40.00 Lon: -90.00
Say you are going 30 miles per hour due north
You want the new lat/lon after a five second interval

Five seconds is 0.00139 of an hour, so in five seconds you would have traveled 0.0417 miles.

This is equivalent to 0.0642 degrees latitude, so the new position is Lat: +40.0642 Lon: -90.00

If you're going at an angle you have to use a little trig (Pythagorean theorem), but it's still simple math.

Where it could be tricky is if you need the point to stay on the road network.. then I think you may be able to leverage routing functionality in MapPoint and interpolate to get a five second interval.

Eric

nasirgul · #17 (**permalink**) 05-14-2008

Thank you very much Eric. Now i got how i can code by looping which keep on locating new position after 5 sec. Just one thing more about the direction how can I continuously update direction on map after some seconds, suppose input from user be Lat:N & Lon:S.
Thanks once again.

nasirgul · #18 (**permalink**) 05-16-2008

Hello,
Any body help me to get out of this problem. I need to have an infinite loop that executes every X seconds and show me next position. In other words, a timed / delayed loop. When I use timer it keeps on showing me present position of Lat & Lon which I inserted, not showing me the calculated next values. I tired alot but my application got stuck when i use

Code:

for(;;)
while(true)
while(0==0)

Mine code is

Code:


public double Speed()
        {
            if (speed.Text == null || speed.Text.Length <= 0)
                return 0;
            double knots = Convert.ToDouble(speed.Text);

            //Return KMPH
            return knots * 1.852;
        } 
        
        public double Distance()
        {
            ////speed=distance/time.....so distance=speed*time
            double time = 0.001388;               /////(5 sec time interval)5/3600=0.001388hr
            double distance = time * Speed();   //////////////////km/hr           
            return distance;
        }
        
      
        public double DoLatitude()
        {
            ////1 Degree of Latitude    =   110.6Km,68.703miles
            double onedegreelat = Distance() * 110.6;
            return onedegreelat;
        }
        public double DoLongitude()
        {
            ////1 Degree of Longitude   =  111.3Km*cos(Latitude),69.172miles*cos(Latitude) 
            double onedegreelon = Distance() * 111.3 * Math.Cos(Convert.ToDouble(latitude.Text));
            return onedegreelon;
        } 
       
        public double Lat()
        {
            double remlat = 0;
            remlat = remlat + DoLatitude();
            //remlat = "";
            return remlat;
        }
        public double Lon()
        {
            double remlon = 0;
            remlon = remlon + DoLongitude();
            return remlon;

        }
 while (0 == 0)
            {
               
      textbox1.text= Lat().ToString();

      textbox2.text= Lon().ToString();
            }

I want my fn of Lat() & Lon() should be act as new calculated values so that my pushpin will move continuously.
Hope to hear from u guys.
thanks in advance.

**Wilfried** · #19 (**permalink**) 05-17-2008

Hi,

you always return the same value. You have to place remLat and remLong as private members of the class instead of declaring them on the stack with always the same value (0).

nasirgul · #20 (**permalink**) 05-18-2008

Hello Wilfried,
thank you for yours reply. Actually I am designing dummy simulator which will get data from one application and send to another application. For application one I am giving lat & lon and want to get map in second application. For doing as you said it works fine. It is updating new position on application second but my first application still getting hang up. I don't know about it. I tried on Google for this problem and found treads can solve this problem as it works fine in GUI for unlimited looping. But I don't know how I can use it in my application.

Code:

 private void timer1_Tick(object sender, EventArgs e)
        {
            double remlat = 0;
            double remlon = 0;
            while (true)
            {
                remlat = remlat + DoLatitude();
                remlon = remlon + DoLongitude();

                double retValLat = remlat + Convert.ToDouble(latitude.Text);
                double retValLon = remlon + Convert.ToDouble(longitude.Text);

                string NMEA = "$GPGGA" + "," + "UTCTime" + "," + (retValLat.ToString()) + "," + Pole1.Text + "," + (retValLon.ToString()) + "," + Pole2.Text;
                byte[] nmea = System.Text.Encoding.ASCII.GetBytes(NMEA);
                if (clientSocket != null)
                { clientSocket.Send(nmea); }
                //timer1.Interval=(9000);
                Thread.Sleep(10000);
                //return remlat;

                Console.WriteLine(nmea);
            }

Regards.

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Posted By	For	Type	Date
Formatting Coordinates with DmsFormat - MapPoint Articles - MP2K Magazine	This thread	Refback	05-14-2008 09:29 AM

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