QlikView Mapping

In QlikView, mapping is a way to create relationships between different data sets by linking fields that have common values or attributes. Mapping can be used to merge data from different sources, perform data transformations, and create new fields based on existing data.

There are several different ways to map data in QlikView, including using the ApplyMap function, the Map statement, and the Mapping Load statement.

The ApplyMap function allows you to apply a mapping table to a field in your data set, replacing the values in the field with corresponding values from the mapping table.ApplyMap, for instance, can be used to replace a field with numerical values with descriptive names. A mapping table that may be utilised with the ApplyMap function is built using the Map statement. You can provide the values you want to map as well as the replacement values by using this tool.

The Mapping Load statement is similar to the Map statement, but it allows you to specify a mapping table that is stored in a separate file, rather than defining the mapping table directly in the script.

A example of how to use the ApplyMap function, Map statement, and Mapping Load statement to map data in QlikView:

Map Value1 => Label1, Value2 => Label2, Value3 => Label3
Mapping:
LOAD 
    Value1 as MappingValue, 
    Label1 as MappingLabel,
    Value2 as MappingValue, 
    Label2 as MappingLabel,
    Value3 as MappingValue, 
    Label3 as MappingLabel
FROM [lib://MappingTable.qvd] (qvd);

// Load the data table and apply the mapping
Data:
LOAD 
    *, 
    ApplyMap('Mapping', FieldToMap) as MappedField 
FROM [lib://Data.qvd] (qvd);

This script will first define a mapping table using the Map statement, which maps the values Value1, Value2, and Value3 to the labels Label1, Label2, and Label3, respectively. The Mapping Load statement is then used to load the mapping table from the file MappingTable.qvd. Finally, the ApplyMap function is used to apply the mapping table to the field FieldToMap in the Data table, replacing the values in the field with the corresponding labels from the mapping table.

Mapping is a powerful tool for manipulating and transforming data in QlikView, and can be used to create new insights and relationships in your data.

In QlikView, mapping is the process of creating visual representations of geographical data on a map. This can include points, lines, and polygons, and can be used to show the location of specific data points or to aggregate data by geographical region.

QlikView provides several built-in map visualizations, such as the Map object and the Geo Chart object, which can be used to create maps and display data on them. Additionally, QlikView allows users to create custom maps using the GeoQlik add-on, which provides advanced mapping capabilities, such as the ability to create custom shapes and add layers of data to the map.

To create a map in QlikView, you will need to have data with geographical information, such as latitude and longitude coordinates or address information. This data can be used to plot points on the map and display data associated with those points. You can also create a map using a shapefile with the map information, it can be used as a background of the map, and the data points can be plotted on top of it.

Once the data is plotted on the map, you can use QlikView’s data visualization features to create interactive maps that allow users to explore and understand the data. For example, you can create filters, selections and interact with the data points.

Mapping in QlikView can be a powerful tool for visualizing and understanding geographical data, helping to identify patterns and trends, and making it easier to communicate data insights.