Telling a story through dots
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README.md

Dotplot - Telling a story through dots

DotPlot is a data visualisation tool built on top of D3.js to help non-programmers create interactive data visualisations using easy to use drag and drop interface.

Create View (Create or Edit DotPlot Projects)

DotPlot App Screenshot

Presentation View (Share or Present DotPlot Projects)

DotPlot Presentation Screenshot

Prerequisites

To contribute to this project, you will need the following things properly installed on your computer.

Installation (Frontend)

  • git clone https://github.com/berkmancenter/dotplot.git this repository
  • change into the new directory
  • npm install
  • bower install

Running / Development (Frontend)

Installation (API Server)

  • Change into the API directory cd api/
  • npm install

Running / Development (API Server)

  • node index.js
  • Make HTTP requests at http://locahost:3000/api/<API Endpoint>

Code Generators

Make use of the many generators for code, try ember help generate for more details

Running Tests

  • ember test
  • ember test --server

Building

  • ember build (development)
  • ember build --environment production (production)

DotPlot Guide

DotPlot Guide 1
DotPlot Guide 2
DotPlot Guide 3
DotPlot Guide 4
DotPlot Guide 5
DotPlot Guide 6

Further Reading / Useful Links

Ember Actions Help

loadProject (Function, Observer)

Accepts: None
Use: Calls importJSONData if a valid Project ID is provided.

labelToggle (Function, Observer)

Accepts: None
Use: Observes showLabel property and calls showLabels or removeLabels.

getNodes (Function, Promise)

Accepts: Type of frame (String)
Returns: An array of node objects.

getFoci (Function)

Accepts: Number of choices (Array)
Returns: An array of foci coordinates.

createFrame (Ember Action)

Accepts: None
Action: Calls another action based on the type of frame.

createSingleChoice (Ember Action)

Accepts: None
Action: Creates a new record for a single choice frame and calls d3Init (Run force layout).

createMultipleChoice (Ember Action)

Accepts: None
Action: Creates a new record for a multiple choice frame and calls d3Init (Run force layout).

createDialog (Ember Action)

Accepts: None
Action: Displays createFrame model if CSV file is loaded.

deleteFrame (Ember Action)

Accepts: Frame (Object)
Action: Deletes the frame record based on the provided frame object.

showModel (Ember Action)

Accepts: Element Id (String)
Action: Displays dialog based on the provided id.

hideModel (Ember Action)

Accepts: Element Id (String)
Action: Hides dialog based on the provided id.

fileUpload (Ember Action)

Accepts: File (Object)
Action: Calls importJSONData or importCSVData based on the file type.

importJSONData (Ember Action)

Accepts: File (Object)
Action: Creates new frame records using the data in the provided JSON file.

importCSVData (Ember Action)

Accepts: File (Object)
Action: Extracts different columns from the CSV file and creates node objects. Allows to create frames from scratch.

selectColumn (Ember Action)

Accepts: Column (Object)
Action: Updates the selectedColumn (Question) and highlights the selection.

d3Init (Ember Action)

Accepts: Frame (Object)
Action: Updated nodes data, removes the nodes that are not in the data exit() creates nodes that are not on the SVG enter() and calls force layout action d3Plot.

nodeClick (Ember Action)

Accepts: Node Selection (Object) and Frame (Object)
Action: Finds all the nodes using nodeId (Including Duplicate Nodes), increases the node radius and calls the nodeInfo action.

nodeInfo (Ember Action)

Accepts: Node Selection (Object)
Action: Displays node information DOM Element (Question Answer Sets).

hideNodeInfo (Ember Action)

Accepts: None
Action: Hides the node info DOM Element.

d3Plot (Ember Action)

Accepts: Frame (Object)
Action: Updates nodes data and runs force layout force.start().

removeLabels (Ember Action)

Accepts: None
Action: Selects all the labels on the SVG and removes them.

showLabels (Ember Action)

Accepts: Frame (Object) and updatePosition (Boolean)
Action: Updated label data and creates labels 'enter()'.

updateLabels (Ember Action)

Accepts: None
Action: Hides editLabel dialog, calls showLabels action after removeLabels.

saveNodePositions (Ember Action)

Accepts: Frame (Object)
Action: Iterates over nodes on the SVG and updates the X and Y coordinates of the nodes in the frame object.

changeGravity (Ember Action)

Accepts: Change Event (Object)
Action: Sets new gravity value and calls d3Plot action after removeLabels action.

changeCharge (Ember Action)

Accepts: Change Event (Object)
Action: Sets new charge value and calls d3Plot action after removeLabels action.

changeRadius (Ember Action)

Accepts: Change Event (Object)
Action: Transitions into new radius value transition().

selectFrame (Ember Action)

Accepts: Frame (Object)
Action: Updates the nodes data, removes nodes that are not in the data exit() creates nodes that are not on the SVG enter() and transitions into the specified node positions.

showNotification (Ember Action)

Accepts: Type of notification [Error, Warning, Info, Success] (String) and Notification Message (String)
Action: Displays a notification at the bottom of the view which automatically disappears after 2200ms.

sendToServer (Ember Action)

Accepts: File (Blob) and File Name (String)
Action: Posts the data to /api/project and displays a notification with Project ID Hash.

exportData (Ember Action)

Accepts: Type (String)
Action: Iterates over all the frame records and creates a Blob, calls sendToServer if the type is Publish or else downloads a json file DotPlot.json.

License

Dotplot is licensed under the GPL

Copyright

2017 President and Fellows of Harvard College