Should be capable of changing parameters, establishing connection, and emitting events.

Will update simulation and heatmap:

• Sun moves according to selected date
• Tweets stream given the selected date

Provide search and filter for captured tweets, play back matching tweets on the map.

Provide a field to set the search term for custom streaming API

After over 1 million tweets, the steam will sometimes return:

{
   disconnect:{
      code:7,
      stream_name:'tevgende-statuses228512',
      reason:'admin logout'
   }
}

The server should reconnect and continue streaming when this happens.

This seems to happen when running locally.

The API should return a stream from the start date until real time.

• Start streaming tweets after startDate that match filter
• Streams in simulated real-time
• Streams tweets as they would have came in
• Can be fast-forwarded up to real-time and rewound to start of history

Configuration Parameters

startDate

UTC time in milliseconds. Must be in the past. Defaults to real time.

locations

A comma-separated list of longitude,latitude pairs specifying a set of bounding boxes to filter Tweets by as defined by the Twitter streaming API.

track

A comma-separated list of phrases which will be used to determine what Tweets will be delivered on the stream as defined by the Twitter streaming API.

Return a stream from the start date until real time.

Respond to socket events

setStartDate

Set the date to stream from in milliseconds. Send -1 for real-time streaming.

setTrack

Set the track option with the provided track string.

setLocations

Set the locations option with the provided locations string.

setSpeed

Set the playback speed multiplier to speed up or slow down the stream

Show a marker on the earth indicating the user's GPS coordinates

A texture of global city lights should be shown on the dark side of the earth.

A city lights texture is provided by James Hastins-Trew here. We also have access to the 4k versions of it.

Frontend

A stock market like graph should trace the timeline indicating tweets per minute since the start time and updated in real time.

Backend

Calculate tweets per minute for minutes since start date using Mongo aggregator

Technology

Consider Smoothie Charts

Exposes the following UI controls

• date - Text input of type date to specify stream date
• time - Input of type range to specify stream time. Moves according to playback
• speed - Select menu for playback speed

When any parameters change

• Update stream to reflect changed parameters

The rotation of the camera should be smooth.