Table function#
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Add field#
Add a field to the attribute table.
Attention
Depending on the information to be entered in the attribute field, the correct data type must be selected.
Example: Add a field for population density, data type: Float or Double or Real (floating point numbers)
Delete field#
Delete a field from the attribute table.
Example: Delete all unused/unnecessary fields from the layer.
Calculate Field#
Calculate the attribute values for a field, e.g. based on the values of other fields.
In QGIS you can create a new field or update an existing field.
Attention
Check if the data type of the field and your calculation match. For example, if you are calculating a ratio (e.g. density), the field should not be of type integer.
Example: Calculate the population density using the already existing fields Population and Area.
Basic Statistics for Fields#
Generates a statistic for a specific field in the attribute table.
Example: Statistics for the field population density for all countries, what is the maximum value, average, etc.?
Statistics by Categories#
Create aggregated statistics for categories.
For which fields in the attribute table should statistics be calculated?
Which field in the attribute table contains the category?