Questions tagged [map]

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6
votes
3answers
21k 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 case,...
4
votes
1answer
2k 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
677 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 ...
8
votes
1answer
740 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 ...
5
votes
2answers
14k 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
993 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
382 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 ...