If your reference map doesnt come with a scale and that the track you want to do can be found in Google Map, then i invite you to do the following:
1) go on google map
2) find two points of reference that you think you can easily locate once in the Track Path App.
The two points of reference should be resonably far enough to give you a good scale. I tend to pick as accurately to 1000 meter as possible.
3) zoom in to that area to get a full screen.
4) draw a straight line between the two chosen points of reference.
5) find out what is the distance (if it isnt 1000 meter)
6) make a mental note of that information
7) Zoom out to obtain the map area where you want to have your whole race track circuit layout path visible, making sure to see your two points of reference.
8) Screen grab and save it where your tablet can retrieve it and import into the app.
9) once in the app, [EDIT: PRIOR to adding your map (screen shot of the google map) you can zoom the empty screen to the scale and resolution you desire. It is defaulted at 4000 feet if you use Imperial units, but it is recommanded that you zoom it to a lower scale! Preferably to the scale you previously made a mental note of. I highly recommend you taking the largest length of your desired scale. For example, if you choose 100 feet or another scale at 200 meters, (the smaller number, the more accurate you will be able to make your track) , make it so that the scale length on your app is the longest for that scale number.
REMEMBER: this is still BEFORE you even load your map. This step has to be performed PRIOR to incorporating the map. Once done to your satisfaction ( this process might take you a couple tries,but it will become second nature )]
Now overlay your screen grab. If could happen that you dont see it, but it is there. You just have to pinch and zoom And rotate it until you see it on your screen ( remember this is due to the fact that you went on a smaller scale than 4000ft).
10) zoom in or zoom out until the scale shown on the App is about as close to the scale you found step 6) above.
11) each grid - square that you see is now the same distance as the scale.
12) reposition your map and zoom in/out as necessary to have and to make sure your two point of reference are EXACTLY at the two ends of a grid line.
Dont worry about the home straight yet... We are still trying to get the scale perfect.
13) Adjust the map until you are satisfied with Step 12), then confirm
14) move to the next screen to position your home straight without fear of losing your scale ( if you did it correctly uo to step 13).
Good luck guys and i hope my instruction was easy to follow.
Please make accurate tracks for us to enjoy!!!
[EDITED: see the edited parts above]
except for the 45 feet of elevation change. But its a 2.9 mile tracl. The only part where my elevation matters is t1.
