on 20|12|2014
Filled under: Uncategorized

For this week’s assignment I chose to show the amount of passengers that enter certain stations in the London Underground. This would highlight which stations are busiest at different times. The dataset shows the number of people entering that particular station for a 15 minute period. I have shown the magnitude of the data by the size of the circle but also the colour, so that the data can be easily interpreted by the reader. As you can see from the two images below, there are two different times that have been visualised, which can be toggled between. I did intend to use a slider that would display the entire data set, not just two times. However I was unable to implement this in the code and I feel this does restrict my visualisation. As a compromise, the two values have been clearly highlighted in the code so that they can be interchanged for any time the user chooses. This will then be highlighted at the base of the key.

Still 1Still 2Still 5

 

To highlight each datapoint I wanted to use, a rollover function was used to call up both the value and the station name. This was adapted from a different assignment by Reema Kadri. There are issues when zoomed out too far and overlapping occurs, however the label becomes clearer at smaller scales.

Still 3

I chose to use the map called ‘ThunderforestProvider.Transport’ to represent my data. The map shows train lines (transparent black lines) which can traced between data points which could highlight the type of line the stations are on. This can seen more clearly below at a higher level of detail. The map also shows station names, which complements the rollover function to make the dataset more readable.

Still 4

 

The dataset was found from the London Datastore, which can be found at : https://www.tfl.gov.uk/info-for/open-data-users/our-feeds (An account has to set up)

My processing file and datasets used can be found at: https://drive.google.com/folderview?id=0B166y1rWX0hbNFN1VjJVY1hEQVU&usp=sharing

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