D3 word cloud service module
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The D3 word cloud module uses the [http://www.jasondavies.com/wordcloud D3 cloud layout] to visualize topic structures in Wandora. It uses the open source JavaScript visualization library [http://d3js.org/ D3.js]. The service module's alias in Wandora is '''d3cloud''' and the URL of the visualization is | The D3 word cloud module uses the [http://www.jasondavies.com/wordcloud D3 cloud layout] to visualize topic structures in Wandora. It uses the open source JavaScript visualization library [http://d3js.org/ D3.js]. The service module's alias in Wandora is '''d3cloud''' and the URL of the visualization is | ||
| − | http://127.0.0.1:8898/ | + | http://127.0.0.1:8898/d3/cloud |
The visualization uses the currently open topic as a starting point and let's the user navigate through the topicmap by clicking on the cloud's words that map to associations of the current topic. | The visualization uses the currently open topic as a starting point and let's the user navigate through the topicmap by clicking on the cloud's words that map to associations of the current topic. | ||
Revision as of 11:51, 16 May 2014
The D3 word cloud module uses the D3 cloud layout to visualize topic structures in Wandora. It uses the open source JavaScript visualization library D3.js. The service module's alias in Wandora is d3cloud and the URL of the visualization is
http://127.0.0.1:8898/d3/cloud
The visualization uses the currently open topic as a starting point and let's the user navigate through the topicmap by clicking on the cloud's words that map to associations of the current topic.
The visualization's layout can be modified with the following URL query string parameters:
| font | Specifies the font used to render the words in the cloud |
| spiral | Specifies the spiral along witch the words are placed |
| scale | Specifies the function according to which the font sizes are calculated from the amount of associations that particular topic has. |
| from, to and or | the parameters for random rotation. "from" and "to" specify the range in degrees in relation to the vertical axis and "or" specifies the amount of steps within the range. For example from=-90&to=90&or=5 would result in each text's rotation to be randomly -90, -45, 0, 45 or 90 degrees |
Also the parameter n can be used to limit the amount of topics retrieved from Wandora and thus the words rendered at a time.
A complete description of the parameters is provided on the visualization page and an example of their use follows below.
Note that as with D3 the browser support of D3 visualizations in Wandora is limited to IE9+ and up to date versions of Firefox, Chrome (+Chromium), Safari and Opera.
Example
The WordNet is used to demonstrate the visualization
Selecting a topic in Wandora shows it and it's associatated topics in the browser.
font=times%20new%20roman is used to change the font of the cloud
from=-90&to=90&or=5 is further used to rotate the words randomly either -90, -45, 0 ,45 or 90 degrees
the cloud is navigated by clicking on the words as if they were links
A sense of completely random rotation is achieved by increasing the or-parameter
