SAP Lumira - Enriching data


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3rd lesson about SAP Lumira

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SAP Lumira - Enriching data

  1. 1. SAP Lumira Enriching Data
  2. 2. Manage measures in a dataset 2 • All columns from the original data source that were formated as numbers are automatically converted to measures. If the column should be treated as attribute, it can be removed from the measures • If the column was not recognized as a measure, the attribute can be promoted to a measure • You can also modify the aggregation method for existing measures. By default measures are aggregated as a sum. In some instances however a different method of aggregation or no aggregation at all may be more appropriate
  3. 3. Create a time hierarchy 3 Attributes, that can be semantically enriched are indicated with the question mark over the icon that identifies the data type o Open the “Retail” dataset created in the first lecture o Create a time hierarchy for the Date attribute o Visualize the data from the hierarchy o Create a Line Chart showing Sales Revenue by Year (use time hierarchy as X-Axis) o Keep only “City Trousers” and “Trousers” Lines o Add Lines attribute to legend o Show Data Labels o Change the level of the hierarchy to display data by quarter o The values are now broken down to a more meaningful level o Save you changes to both the visualization and the document
  4. 4. Create a geographic hierarchy 4 o Create a geographical hierarchy based on location names for the City attribute. You can map the geographic data by correlating an attribute with the appropriate level in the hierarchy o The City attribute has been automatically mapped to the City level. Map the Country attribute to the Country level The results of the mapping are displayed. It could be that not all data has been resolved. SAP Lumira allows to edit the mappings. o Visualize the data from the hierarchy. Create a new visualization to show pie charts for each geographic area o Show Sales Revenue by Lines for each Country o Filter the data to keep only Trousers and City Trousers Lines o Add a Country filter and keep only United States o Change the level of the geographical hierarchy to see the values for each city o Save the new visualization and your changes to the document
  5. 5. Create a geographic hierarchy 5 The result should look like this: Similarly the geographical hierarchy can be created based on latitude and longitude
  6. 6. Other options 6 • It is possible to create a calculated field from the measure or attribute settings • You can define a name and a formula for a new column • You can construct the formula using the combination of existing measures or attributes for a calculated attribute, functions and standard operators Create a calculated measure or attribute in a dataset Sort and filter values in a dataset • In Prepare workspace it is possible to sort data directly in a dataset • It is also possible to filter the column to exclude specific data from the dataset • These changes impact the visualizations