latitude-longitude | 易学教程

How to perform Ajax call first to get lat/lng and then load Google maps with markers?

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问题 I am doing an ajax call to retrieve the lat and lng of stores locations stored in sql database. This is my ajax call and returns the json object of all lats and lngs. $.ajax({ type:"GET", dataType:"json", url:"<?php echo site_url("sandbox_faizan/get_coordinates") ?>", success: function(result) { my_arr = result; for(var i=0;i<result.length;i++) { store_points(result[i].lat,result[i].lng) } }); Now I have stored this json object in my own array object that will be used to add markers on map.

identify zip codes that fall within latitude and longitudinal coordinates

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I have several data frames in R. The first data frame contains the computed convex hull of a set of lat and long coordinates by market (courtesy of chull in R). It looks like this: MyGeo<- "Part of Chicago & Wisconsin" Longitude <- c(-90.31914, -90.61911, -89.37842, -88.0988, -87.44875) Latitude <- c(38.45781, 38.80097, 43.07961, 43.0624,41.49182) dat <- data.frame(Longitude, Latitude, MyGeo) The second has zip codes by their latitude and longitudinal coordinates (courtesy of the US census website). It looks like this: CensuseZip <- c("SomeZipCode1","SomeZipCode2","SomeZipCode3","SomeZipCode4"

How do I convert Exif long/lat to real values?

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I am trying to get the Exif data from some of my pictures and these are the latitude and longitude values that I am receiving. Can someone help me out and tell me what these numbers mean? DEBUG/lat = 30/1,12/1,34/1 (7588) : lattitude DEBUG/long = 81/1,22/1,41/1 (7588) : longitude thanks in advance. Reno I was going to write a converter for this and stuff, but it turns out the answer is already in this blog Just in case if the link goes dead: public class geoDegree { private boolean valid = false; Double Latitude, Longitude; geoDegree(ExifInterface exif) { String attrLATITUDE = exif

Intersection of two Moving Objects with Latitude/Longitude Coordinates

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问题 This issue I can't really solve till now although I read through several articles already - hope somebody can help here. Facts (know variables): Two moving objects on earth surface, both with current know latitude/longitude coordinates. The speed of both objects is know as well (in m/s). The direction (angle) of one object is know. Now I want to calculate the direction (angle) of the second moving object needed to intersect with (hit) the other moving object. As the distance between the

How to retrieve the GPS location via SMS

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问题 I made an Application that gives me the location of my Android phone. Now I want to make a method that helps me to retrieve the GPS location of my phone (latitude longitude or the address if possible) with an SMS. Exemple: phone number 558899. I send an Sms with "get location" to 558899 an get a message back with the coordinates. 回答1: this may help: "Capture" incoming SMS: http://www.codemobiles.com/forum/viewtopic.php?p=95 Send SMS: http://www.anddev.org/how_to_send_sms-t552.html Edit: Dead

get Lat Lang from a place_id returned by autocomplete place api

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问题 I am searching the place in my apps using the google autocomplete place api and now I want to get latitude and longitude of the place that i have searched. How to get latitude and longitude from the result returned by autocomplete place api by google in android? 回答1: The following code snippet which uses Google Places API for android worked for me Places.GeoDataApi.getPlaceById(mGoogleApiClient, placeId) .setResultCallback(new ResultCallback<PlaceBuffer>() { @Override public void onResult

Can PostGIS be used to create a grid map of a country?

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I'm trying to divide the map of an area into 1 km x 1 km square grids and ultimately, count and retrieve how many points (given their latitude and longitude values) fall into each square grid of this map. Can this operation be done in the PostGIS, if so, how can I do that? UPDATE: Mike Toews has a detailed answer here: https://gis.stackexchange.com/questions/16374/how-to-create-a-regular-polygon-grid-in-postgis Mike T As mentioned in my comment make a regular grid . To make a 1 km grid for a whole country, this could be challenging, since the earth is not flat and cannot be divided into

How to get Latitude and Longitude information from picture

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问题 How to get latitude and longitude information from picture store in device or SD Card? 回答1: I found very simple solution for this question....So I posted it here to help my friends who have problem like me to get Geo location from Picture. Bundle bundle = getIntent().getExtras(); if(null != bundle) { String filepath = bundle.getString(FILE_PATH_KEY); try { ExifInterface exif = new ExifInterface(filepath); StringBuilder builder = new StringBuilder(); builder.append("Date & Time: " + getExifTag

Drag & drop an object into Google Maps from outside the map : marker not put at correct latitude / longitude

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I'd like to drag an object into my Google Map (API V3) from outside the map. After some research, I found this very helpful post and I tried to adapt it to my project. The main idea is to drag a .png image on the map and when the mouse button is down, get the actual coordinates and place a marker at that lat / lng. But I noticed there is a difference between the point you drag your image and the point where your marker is placed. The difference is around 10 / 15 pixels on the sample linked above, regardless the zoom level. At max zoom, it's not very important, but the more you unzoom, the more

Is there a way to divide a map into square grids and retrieve latitude/longitude information from there? [closed]

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Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. I have a map of a specific area and I need to determine whether a given location -with lat-lon coordinates- falls into any grid that covers this map. I decided to divide the map of the area I was given into 1 km x 1 km square grids using Google Earth -enabling the square grids using CTRL+L and zooming to the appropriate scale so that the grid lines are 1000 meters away from each other- and extract the entire data as KML,