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Showing posts with the label Mapreduce
Dc.js: Stacked Area Chart Using Reducecount Method

Dc.js: Stacked Area Chart Using Reducecount Method

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I'm fairly new to the dc.js/crossfilter/d3 trifecta, and have a question about grouping variabl… Read more Dc.js: Stacked Area Chart Using Reducecount Method
Get Document's Placement In Collection Based On Sort Order

Get Document's Placement In Collection Based On Sort Order

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I'm new to MongoDB (+Mongoose). I have a collection of highscores with documents that looks lik… Read more Get Document's Placement In Collection Based On Sort Order
Mongodb Query To Remove Duplicate Documents From A Collection

Mongodb Query To Remove Duplicate Documents From A Collection

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I take data from a search box and then insert into MongoDB as a document using the regular insert q… Read more Mongodb Query To Remove Duplicate Documents From A Collection
How Can Get Newest Document Just Using The Map

How Can Get Newest Document Just Using The Map

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I have document like the following, I want to use map function to get the latest status with given … Read more How Can Get Newest Document Just Using The Map
Mongodb Mapreduce Scope - Referenceerror

Mongodb Mapreduce Scope - Referenceerror

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I'm trying to use an external object inside mongodb map/reduce functions. If the object has a v… Read more Mongodb Mapreduce Scope - Referenceerror
Merging Object's Attribute In Rereduce Function Resulted In Wrong Value Each Time The View Is Created

Merging Object's Attribute In Rereduce Function Resulted In Wrong Value Each Time The View Is Created

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This is follow up from this question How to merge objects attributes from reduce to rereduce functi… Read more Merging Object's Attribute In Rereduce Function Resulted In Wrong Value Each Time The View Is Created
Accessing Mongodb's Object From Mapper (MapReduce)

Accessing Mongodb's Object From Mapper (MapReduce)

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I have an extra question based on the one I asked before: calculate frequency using mongodb aggrega… Read more Accessing Mongodb's Object From Mapper (MapReduce)