Opens an existing Lookup Table enabling it to be viewed and edited.
The Tables/Lookup Table/Open command is selected from the Utilities task.
Open Lookup Table dialog box
| Item | Used to |
| Lookup Tables: | Select an existing lookup table to be viewed or edited. The selected lookup table is shown with its background highlighted. Existing lookup tables are stored as files with LUT extensions in the user folder |
| OK | Open the selected lookup table and display the Lookup Table dialog box. Use the Lookup Table dialog box to view or edit the lookup table codes. Refer to the Lookup Table dialog box topic. |
| Cancel | Close the dialog box without opening a lookup table. |
A lookup table consists of pairs of alpha numeric codes. For each pair, the first code must be a feature code defined in the selected code table, and the second code is a feature code in an incoming data set.
A lookup table is used to match the feature codes of the incoming data set to the feature codes in the selected code table, thereby quickly determining the attributes of data imported into the system from some other source.
Use of a lookup table is optional. If a lookup table is not used, then each code in the incoming data set should be defined in the selected code table. If it is not present in the code table, then the object will be assigned to the DEFAULT code and attributes.
Two lookup tables are supplied with the system:
ALPHA.LUT is a lookup table for converting from alpha feature codes in an incoming data set to the numeric feature codes used in the NUMERIC.CTB code table.
NUMERIC.LUT is a lookup table for converting from numeric feature codes in an incoming data set to the alpha feature codes used in the ALPHA.CTB code table.