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Is there a way in rails via some mapping API/gem where I can define map areas/map zones (with polygon bounds) and detect if an address falls within a particular zone/area.
This is easily done with geokit.
First construct a polygon from LatLng:
polygon = Geokit::Polygon.new([
Geokit::LatLng.new(0,0),
Geokit::LatLng.new(10,0),
Geokit::LatLng.new(10,10),
Geokit::LatLng.new(20,10),
Geokit::LatLng.new(20,0),
Geokit::LatLng.new(30,0),
Geokit::LatLng.new(30,20),
Geokit::LatLng.new(0,20)
])
Then you can test if the polygon contains a LatLng:
point = Geokit::LatLng.new(5,5)
polygon.contains?(point) # => true
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Basically, I have two points, A and B that are 10 miles apart if you drive. I draw a route using driving directions between them using MapKit.
I want to find point C's latitude and longitude, which is at the point on the route 2 miles from point A. This could also work based on a percentage(ex: 20% of the route is completed between point A and B).
Hopefully, this image can explain better then I can.
Does anyone have any idea on how to do this using Swift and MapKit?
Thanks!
You may want to check out the MKRoute response you receive from the MKDirections.
An MKRoute object defines the geometry for the route—that is, it contains line segments associated with specific map coordinates.
You will find the documentation for MKRoute here:
https://developer.apple.com/documentation/mapkit/mkroute
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one of my filter functions results
2020-03-10 15:00:57
2020-03-10 14:14:42
2020-03-10 12:50:25
second one results
2020-03-10 15:59:39
2020-03-10 14:52:37
2020-03-10 13:57:48
I would like to write a single function that would do something like
=sum(filterTable2.firstArgument-filterTable1.firstArgument, filterTable2.secondArgument-...)
but i can't manage to find a solution
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cat_poop = 12
> 12
if i rebind cat_poop to a new value forexample:
cat_poop = 20
> 20
So how do i get the first value of cat_poop after a rebind
You cannot get the previous value after an Elixir variable is rebound.
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Is there a way to fast forward an audio file by x2, x4 etc by the use of a button? If not, do you have any idea how this would be possible?
NSTimeInterval *timeIntervel = [yourPlayer currentTime];
timeIntervel = timeIntervel + timeToForword;
[yourPlayer setCurrentTime:timeIntervel];
[yourPlayer play];
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Is it possible to limit the size of attachment that can be send or received in qmail. Its to stop mail forwardings with large sizes amoung employees.
The maximum message size for emails in a qmail-installation is normally defined by the following file:
./qmail/control/databytes
The size is defined in bytes. Example:
50000000
Limit would be: 50000000Bytes = 48,828Kb = 47,68MB