Tableau - Dimension and Measure
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This post covers Dimensions and Measures.
Dimensions and Measures
- Tableau assigns each field in the data source as dimension or measure
- Each field (column from data source) is assigned:
- Data Type
- integer
- string
- date
- …
- Role
- Dimension:
- Qualitative data e.g. name, date, geographical data.
- Dimension can be used to categorise/segment the data
- Discrete [more common] - Blue
- e.g. Product Name
- Continuous [less common] - Green
- e.g. Order Year
- Discrete [more common] - Blue
- Measure
- Quantitate/numeric vales that can be measured
- Can be aggregated
- Discrete [less common] - Blue
- Profit
- Continuous [more common] - Green
- Profit
- Discrete [less common] - Blue
- Measure field is always aggregated with a function - Visual Cue
- Dimension:
- Data Type