The tag has no wiki summary.

learn more… | top users | synonyms

1
vote
1answer
47 views

storing map template in database

I am working on an application that displays choropleth maps. These maps are of all different types, some display state by county, country by state/province, or world by country. How should I ...
2
votes
1answer
107 views

How to find out if a tile is being covered by a polygon?

Given a (intersecting) polygon, I'd like find out which tiles are being covered by the polygon. Example: Details: Tiles are square, 1 unit wide/high The grid begins in (0,0) The corners of the ...
-1
votes
1answer
56 views

What would be some ways to make a map app with a sidebar for sampling live music? [closed]

I'm a beginner developer with an idea but unsure the best technology to use to build it. [IF THIS IS THE WRONG PLACE, PLEASE KINDLY COMMENT AND I'LL PULL IT!] I'd like to make a simple app that has a ...
1
vote
2answers
101 views

Mapping a list of optional values to an optional list of values

I have encountered the following pattern while programming in Haskell (but the pattern could occur in any language supporting lists, option types, and mapping of a function over a list). I have types ...
-2
votes
1answer
4k views

Why does HashMap allow only one null key? [closed]

A HashMap allows only one null key. Is it because it allows only unique keys? Or is there another reason?
-2
votes
1answer
77 views

Mapping software [closed]

Okay, this might sound lame, but it is actually a difficult question (for me at-least)... Now there are many mapping software like Google Maps, Apple maps and others whose existence is outside my ...
1
vote
1answer
134 views

Is there an API I can use to get access to map data? [closed]

A customer would like me to build them an intranet web site with mapping information. For example, maps such as the ones on Google Maps. I looked at the Google Maps API, but their "free use" license ...
0
votes
2answers
697 views

How do I initialize a Scala map with more than 4 initial elements in Java?

For 4 or fewer elements, something like this works (or at least compiles): import scala.collection.immutable.Map; Map<String,String> HAI_MAP = new Map4<>("Hello", "World", ...
1
vote
3answers
4k views

How does the new google maps make buildings and cityscapes 3D?

Anyone who's seen the new Google maps has no doubt taken note of the incredible amount of three-dimensional detail in select American cities such as Boston, New York, Chicago, and San Francisco. ...
1
vote
1answer
69 views

how to map controllers , models, and views as a todo list

Before starting on a current project I was wondering if there is a terminology for what I am planning on doing? Basically what I want to do is map out every object in layers such as all the ...
1
vote
2answers
1k views

Dataset with coordinates of borders of countries [closed]

I am creating an application that visually displays world regions, e.g. to place markers within an administrative region. Does a dataset exist with geometrical or geographical (long/lat) descriptions ...
16
votes
6answers
887 views

Map of functions vs switch statement

I'm working on a project that processes requests, and there are two components to the request: the command and the parameters. The handler for each command is very simple (< 10 lines, often < ...
3
votes
2answers
707 views

How can “hash functions” be used to implement hash maps at all?

My understandment is that hash maps allow us to link, say, a string, to certain memory location. But if every string were to be linked to a unique place in memory it would need a huge block of empty ...
-3
votes
1answer
611 views

map data structure in pacman [closed]

I am trying to make a pacman game in c#. I have done some basic work and have previously replicated games like copter-it and minesweeper. I am confused about how to implement the map in pacman. Which ...
2
votes
2answers
133 views

What can I do in order to inform users of potential errors in my software in order to minimize liability?

I'm an independent software developer that's spent the last few months creating software for viewing and searching map data. The software has some navigation functionality as well (mapping, ...
2
votes
2answers
162 views

Best approach for saving highlighted areas on geographical map

I am designing an application that allow users to highlight areas of a geographical map using a tool that is like brush or a pen. The tool basically draw a circle with a single click and continue ...
5
votes
1answer
145 views

Multi-platform Map Application

I'm working on a web project (PHP, jQuery) which currently using Google Maps powering up the map functionality of the application, however we need to make it multi-platform like you can go to the ...
3
votes
1answer
136 views

For csv database extracts, how do map keys not create a dependency?

A lot of my work is done with .csv extracts (reports) from databases. As I have been programming in Clojure, I've received comments that relying on vector indexes creates dependencies. I understand ...
1
vote
1answer
381 views

Countour Mapping API

I have done some searching on Google, but haven't come up with much as of yet. I am wanting to take a set of point data, which I had previously been using to create weighted points for a heat map ...
1
vote
1answer
539 views

Custom map solution using openstreetmap [closed]

I want to work in real estate portal and I need to filter the result and list the properties in map view using openstreetmap (Client requirement). They gave this reference site . I started on ...
1
vote
2answers
759 views

Google Maps-based desktop application [closed]

I want to build a desktop application which has google maps embedded to it. This app should have a thread to read coordinate data online a usb microphone to use. This application will move the google ...
1
vote
1answer
741 views

sorting using a custom definition of “>” and “< ” in python

suppose I have a custom function such as def greater(a, b): if (a % b) % 2 == 0: return 1 return 0 It defines how to compare two numbers and determine which is greater. In this ...
4
votes
1answer
1k views

(How can I / Am I allowed to) Use Google Maps as a Texture on an OpenGL object?

Note: I asked a very similar question on StackOverflow but did not get much attention, so was directed to http://programmers.stackexchange.com as licensing issues seem to have more interest here... I ...
5
votes
2answers
373 views

GIS-based data visualization and maintenance tool

Background Looking to leverage an existing GIS system for exploring organizational data. Architecture The following figure represents a high-level overview of the system's desired features: The ...
1
vote
2answers
1k views

Equivalent of #map in ruby in golang

I'm playing with Go and run into something I'm unable to find in Google, although there is certainly something that exists: I'm using the following struct: type Syntax struct { name string ...
6
votes
1answer
341 views

How do I efficiently store all OpenStreetMap data in an indexed way?

I have a PBF file that contains the following information about a country: Nodes, each with their own longitude, latitude and properties; used to store points in a 2D space. Ways, each with their ...
3
votes
2answers
2k views

What is the advantage of using map datastructure?

I am a member of some online coding website and today when I submitted a solution in C++, I saw there were much better answers in C++ itself which took considerably less time. The solutions were open ...
3
votes
1answer
337 views

Find the average speed for roads

I am working on a mobile application and I would like to ask you a question. Is there an API or a method to get/calculate the average speed that a car should have in a road. I am working on a GPS like ...
1
vote
3answers
343 views

Is an assocative array ordered?

An associative array has many common similar names, hash, keymap, map, table, index. It's a map of keys and values but I cannot find a reputable definition of the phrase which tells me whether a map ...