Contents
What are the values in an attribute field?
A number that represents monetary values. The values in this field are used to positively distinguish one feature or entity from another; for example, an assessor’s parcel number, a membership ID, or an invoice number. Each value per entity must be unique, but that does not necessarily mean all the values in this field will be unique for the layer.
What can attribute field mapping be used for?
In addition to transferring attribute fields from input to output, field mapping can also be useful for some common tasks, such as field concatenation, and calculating statistics, such as mean or sum.
How can I change the value of an attribute?
To change an attribute value, click a cell on the right side and enter the value for that field. Some fields have special editing behavior. For example, fields with coded attribute domains show drop-down lists of the available values, raster fields prompt you to load a raster dataset or photograph, and date fields open a pop-up calendar.
How to add a field to the field map?
The context menu for an output field has the following options: Add Input Field opens a dialog box that lists all input fields. Select one or many input fields and click OK to add them to the output field. Delete removes the output field from the field map.
How to assign a geographic role to a field in tableau?
When a field is assigned a geographic role, Tableau creates a map view when you add the field to Detail on the Marks card. In other words, Tableau geocodes the information in that field. In the Data pane, click the data type icon next to the field, select Geographic Role, and then select the geographic role you want to assign to the field.
How to display the sum of attribute values?
In Value Fields, specify the field to summarize as the first field and the summarized attribute as the second field. Click Add All Fields. Click OK. The desired feature class is now symbolized according to the Unique values, many fields symbology. In the Layout view of the map, insert a map legend.
Can you assign a geographic role to a field?
Many of the roles are international, but some are limited to the U.S. only. You can assign geographic roles to your fields based on the type of geographic data they contain. For example, you can assign the Airport geographic role to a field that contains International Air Transport Association (IATA) codes.