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VAST Challenge 2018:Mini-Challenge 2: Like a Duck to Water
Tools
Data preparation
- From the chemical units of measure file, we see some chemical units have unrecognizable value, after we check it should be replace in µg/l.
- In order to show geographical visualization, we can use the X-coordinate and Y-coordinate get from the given waterway picture, use the annotate point function from Tableau to get the data of these 10 locations.
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Value
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Measured value for the chemical or property in this record
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We see that values are represented on different scales according to the 'Unit' so it Range from 0 to 37959.28 with a mean of 24.02. it is not easy to do normalization or transformation, but it would be a problem when doing analysis.
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Location
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Name of the location sample was taken from.
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10 different locations - Achara, Boonsri, Busarakhan, Chai, Decha, Kannika, Kohsoom, Sakda, Somchair, Tansanee. from the picture below, we can see the total number of readings collected at each location, it indicates a lack of consistency in collection of the chemical samples of different locations.
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