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I would like to show country boundaries for only one country inside Google Map, just like it's done here:
Does anybody have an idea if it's possible to get such map using Google Maps and how to achieve it?
The country polygons are available in FusionTables (specifically in the Natural Earth Data set).
Here is an example showing South Africa, it includes the individual states, if you don't want them, you should be able to find the country borders. See this similar question or this one
Here is an example showing just the country of South Africa from this FusionTable
This looks like the closest it can be styled to the image.
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Hey I want to create a chemical structure editor like chem draw, I am using QT software with C++ programming to create one, so can you guide me how to create a structure and if we can attach different bond with it chem draw link: chemdraw
Well I create chemical structure using QPainter API but we can't attach bonds to it, I want something so that I can attack two structures to make a one
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I was looking at the Here Documentation to convert the IP to Geo data but all the links Correspond to having Geo data from Lat and Long is anything am i missing.
HERE doesn't have a product like IP Geolocation API (get geo-coordinate by only IP-address).
You need to use a third party API for that.(E.g.: commercial http://www.ip2location.com/ or Free http://search.cpan.org/dist/GeoIP2/)
HERE has the product Positioning API
The HERE Positioning API enables developers to build applications that require location estimates based on radio network measurement data. The supported measurement data includes 2G, 3G, 4G, and WLAN measurements.
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I'm trying to write a program using R to pull polling places location from the Google Maps API. Then I'd like to display said information in a map using R. Any kind of help would be useful. So far I've tried using the libraries ggmaps, maps and mapsdata. But essentially I want to use R to query google maps for polling places, google maps return that information then I want to redisplay it using R.
Thank you for your help
It is pretty straightforward using the packages you mentioned. The geocode function may well do what you need. For example
library(ggmap)
library(maps)
map("usa")
points(geocode(c("boston", "washington DC", "new york")), cex=3, col=rainbow(3))
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Here is the thing.
I have a bunch of vehicles GPS data points, which consist of "timestamp, longitude, latitude, fuel consumption and distance" and the data is OSM(open street map) based. I want to match the data points to OSM, divide it by road type, so that I could get road type specific data in groups (e.g, highway group, local roadway group). Then I'll could calculate the fuel efficiency corresponding to different road type.
This is a project I'm currently doing. I'm wondering if R has any packages could handle this type of task?
Any help would be greatly appreciated!
I have recently commented a similar question here on stackoverflow.
R: How to identify a road type using GPS?
You need a package that wraps an API enabling "reverse geocoding" service. In detail you need a function that extracts extra information other than the the address. See package ggmap as suggested in the other thread for example. Not sure you can extract the detail you need.. Anyway it is worth a try.
Take a look at the package Nominatim (https://github.com/hrbrmstr/nominatim) or geocodeHERE(https://github.com/corynissen/geocodeHERE) as well. And please inform us all about successes or failures :) Good luck
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Why does Google restrict the use of the JavaScript Distance Matrix API so that it can only be used if you display the data on a Google Map?
From the Distance Matrix API documentation
Use of the Distance Matrix API must relate to the display of information on a Google Map; for example, to determine origin-destination pairs that fall within a specific driving time from one another, before requesting and displaying those destinations on a map. Use of the service in an application that doesn't display a Google map is prohibited.
I've written a simple bookmark scriptlet for personal use that allows me to select an address and click it and it then displays the driving distance and time to several points of interest. In order to comply with this seemingly arbitrary restriction, I will now have to use more of Google's resources displaying a map that I don't want to see!
Anybody know why they would have this restriction?
It is due to licensing restrictions between Google and the data providers.