2014/10/15 下午 10:11:10

iphone Programming Glossary: lon

http://stackoverflow.com/questions/1305127/free-weather-api

iPhone: NSDate convert GMT to local time

http://stackoverflow.com/questions/3901474/iphone-nsdate-convert-gmt-to-local-time

MKMapView moving Annotations Automatically - animate them?

http://stackoverflow.com/questions/4113085/mkmapview-moving-annotations-automatically-animate-them

poll is below. CLLocationCoordinate2D coordinate CLLocationCoordinate2D coord coord.latitude lat doubleValue coord.longitude lon doubleValue double differencetime exampleTime double speedmoving double distanceTravelled speedmoving differencetime.. below. CLLocationCoordinate2D coordinate CLLocationCoordinate2D coord coord.latitude lat doubleValue coord.longitude lon doubleValue double differencetime exampleTime double speedmoving double distanceTravelled speedmoving differencetime CLLocationDistance.. double radiansHeaded DEG2RAD self.heading doubleValue CLLocation newLocation passedLocation newLoc movedDistance along radiansHeaded coord newLocation.coordinate return coord As requested the .h file of the Object I do not have a SetCoordinate..

Figure out time by latitude/longitude?

http://stackoverflow.com/questions/4632100/figure-out-time-by-latitude-longitude

out time by latitude longitude Here's the deal. I have a latitude longitude set of a location. I need to figure out what the current time is in.. out time by latitude longitude Here's the deal. I have a latitude longitude set of a location. I need to figure out what the current time is in that location. Here's how I was getting it before.. give the time for the user's current location. Is there an API somewhere that gives me the time based off of a lat lon pair Thanks in advance. iphone objective c cocoa touch time share improve this question Unfortunately timezones and..

How to solve Xcode 4.1 (LION) GPS error?

http://stackoverflow.com/questions/6792061/how-to-solve-xcode-4-1-lion-gps-error

adding custom gps position The file is an XML like this xml version 1.0 gpx version 1.1 creator Xcode wpt lat 45 49939 lon 9 12114 name Milano name wpt gpx you can add this file in your project or New File GPX. While you're running your app activate..

Help calculating X and Y from Latitude and Longitude in iPhone

http://stackoverflow.com/questions/6852195/help-calculating-x-and-y-from-latitude-and-longitude-in-iphone

to locate the person inside that map. The problem begins when I try to get the pixel location of a given latitude and longitude. I have several ground control points as reference and even managed to calculate the an angle between my reference.. will give my projections of X and Y but I can't find a scale to multiply correctly. I guess is because latitude and longitude are given in degrees and are non linear but I have such a small spot that I can aproximate it as linear spot. I can't.. same place is rotate several degrees to the left. UPDATE Following this site http www.movable type.co.uk scripts latlong.html i could calculate the distance using the Haversine formula but as orientation bellow i found out that I was calculating..

Simulating location changes for `startMonitoringSignificantLocationChanges`

http://stackoverflow.com/questions/8541973/simulating-location-changes-for-startmonitoringsignificantlocationchanges

to make a track you can create a GPX file with waypoints like this xml version 1.0 encoding UTF 8 gpx wpt lat 52.373 lon 4.871 wpt wpt lat 52.374 lon 4.872 wpt wpt lat 52.375 lon 4.871 wpt gpx Save it as track.gpx. Be careful of having no whitespace.. a GPX file with waypoints like this xml version 1.0 encoding UTF 8 gpx wpt lat 52.373 lon 4.871 wpt wpt lat 52.374 lon 4.872 wpt wpt lat 52.375 lon 4.871 wpt gpx Save it as track.gpx. Be careful of having no whitespace at the start. When you.. like this xml version 1.0 encoding UTF 8 gpx wpt lat 52.373 lon 4.871 wpt wpt lat 52.374 lon 4.872 wpt wpt lat 52.375 lon 4.871 wpt gpx Save it as track.gpx. Be careful of having no whitespace at the start. When you Build and Run there's a toolbar..

Finding the closest point to a given point

http://stackoverflow.com/questions/913576/finding-the-closest-point-to-a-given-point

point I have searched all over for this but I can't seem to find the best approach to this. I have about 22000 lat lon points and I want to find the closest one's to the current location of the iPhone. I've seen people ask about Quad Trees.. probably build an octree in Euler geocentric XYZ space because that allows me to get true distance not warped lat lon distance. However in practice a quad tree in lat lon space will probably work well enough. Once you have a hit you hold.. space because that allows me to get true distance not warped lat lon distance. However in practice a quad tree in lat lon space will probably work well enough. Once you have a hit you hold on to that tree node assuming the tree isn't re built..