How to de-encapsulate data in an elegant manner
rfman78
Posts: 12
Hi folks,
I'm sort of unfamiliar with the java String Class and the methods available to it,
But my first question. Does the Javelin support the Sqrt function? I need to utilize Pythagorean theorem to calculuate distances between GPS coordinates..
Anyhow, here's what I want to do.· I want to xmit a series Unit IDs and their associated GPS coordinates.
So for example, say we have:
ID··········· GPS COORD
1············· (2,4)
2············· (6,7)
3············· (5,2)
4············· (2,5)
I have encapsulated this in a string that looks like:
L!I1X2Y4I2X6Y7I3X5Y2I4X2Y2E
where the format is I,Unit ID,X,X Coord,Y,Y coord, E for End
This data is transmitted and received as a string on the other end.
What I'm confused on doing is coming up with an elegant way to unpack this data into a format that can be stored in an array.
Is there a way to search for Characters (I, !, etc)
Please help!
·
I'm sort of unfamiliar with the java String Class and the methods available to it,
But my first question. Does the Javelin support the Sqrt function? I need to utilize Pythagorean theorem to calculuate distances between GPS coordinates..
Anyhow, here's what I want to do.· I want to xmit a series Unit IDs and their associated GPS coordinates.
So for example, say we have:
ID··········· GPS COORD
1············· (2,4)
2············· (6,7)
3············· (5,2)
4············· (2,5)
I have encapsulated this in a string that looks like:
L!I1X2Y4I2X6Y7I3X5Y2I4X2Y2E
where the format is I,Unit ID,X,X Coord,Y,Y coord, E for End
This data is transmitted and received as a string on the other end.
What I'm confused on doing is coming up with an elegant way to unpack this data into a format that can be stored in an array.
Is there a way to search for Characters (I, !, etc)
Please help!
·
Comments
the root of an unsigned 16bits root in I.F format (I=highbyte, F=lowbyte representing F/256 fraction).
http://tech.groups.yahoo.com/group/JavelinCode/files/Javelin%20Stamp%20IDE/lib/stamp/math/
You can extract characters from strings using s.charAt(i)
and then use those characters in comparisons. That way you can
write your own search methods.
regards peter