Comments on post “GPS-A-Sketch”
Ryan Hoover
@rrhoover · Founder, Product Hunt
Awesome find, @bjamut, and if you etch-a-P, please share. 😀
This reminds me of @willydennis' Hopscotch.
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Benjamin Larson
@bjamut · Co-founder, Awesome Geekness
@rrhoover Well, here's the route I took:
And here's what I got:
Bummer. @joro1: Perhaps it isn't tracking when the phone screen sleeps? I'm not sure where it lost the information, but you must not be tracking absolute GPS location, but rather relative location. Are you throwing away data if you don't know how the user got to a specific location?
I still love the idea! I'm looking forward to updates so I can properly "etch-a-P".
And here's what I got:
Bummer. @joro1: Perhaps it isn't tracking when the phone screen sleeps? I'm not sure where it lost the information, but you must not be tracking absolute GPS location, but rather relative location. Are you throwing away data if you don't know how the user got to a specific location?
I still love the idea! I'm looking forward to updates so I can properly "etch-a-P". 2sharetweet・
Ryan Hoover
@rrhoover · Founder, Product Hunt
@bjamut wow! I LOVE that you tried this. Amazing. Too bad it didn't sketch it correctly though. 😔
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Joe Rosen
@joro1 · App Dev, GPSSketch.com Crayovie.com
@bjamut @rrhoover thanks, and thank you @bjamut for giving the app a try, very much appreciate the feedback.
GPS-A-Sketch works in the background as long as you leave it in drawing mode. It is however designed to minimize battery drain and will eventually shut off if it doesn't see any new motion.
Drawing is based on our own custom algorithm (rather than any existing 3rd party map API), i.e.:
DISTANCE between 'Position A -----> Position B' X DIRECTION (angle) between 'Position A -----> Position B'
The coordinates are scaled to the screen and displayed as a new line. New coordinates from the GPS draw another new line, and so on.
I took a shot at the PH Kitten yesterday, and tried a simple letter "P" this afternoon. e.g. The screen caps on the left are from GPS-A-Sketch (generated with the app's own algorithm) and on the right in RunKeeper (via Google maps API?).
With short distances in an outdoor space and with good GPS signal you can pretty much trace a map, but if you travel longer distances or if there are a lot of GPS samples the images do become more abstracted.
The app's collecting and saving all GPS samples during a drawing session, so these could (and probably should) be filtered and processed through the e.g. Google or Apple map APIs to make more precise drawings.
The goal is for the app to feel similar to a real Etch-A-Sketch, walking biking or running the equivalent of turning the toy's knobs. I had thought using our own custom algorithm would produce more interesting drawings. But the feedback I've been receiving definitely correlates with @bjamut 's experience earlier today, i.e. the app would be more fun if there was at least an option for less abstracted mapping and more accurate drawing.
With short distances in an outdoor space and with good GPS signal you can pretty much trace a map, but if you travel longer distances or if there are a lot of GPS samples the images do become more abstracted.
The app's collecting and saving all GPS samples during a drawing session, so these could (and probably should) be filtered and processed through the e.g. Google or Apple map APIs to make more precise drawings.
The goal is for the app to feel similar to a real Etch-A-Sketch, walking biking or running the equivalent of turning the toy's knobs. I had thought using our own custom algorithm would produce more interesting drawings. But the feedback I've been receiving definitely correlates with @bjamut 's experience earlier today, i.e. the app would be more fun if there was at least an option for less abstracted mapping and more accurate drawing. 1sharetweet・