Table to point map

Dialog box

The Table to Point Map operation creates a point map out of a table.

For the coordinates of the points, you can use from the table:

Depending on the domain of the input table, you can furthermore choose between the following possibilities:

Dialog box options:

Input table:

Select an input table. Open the list box and select the desired input map, or drag a raster map directly from the Catalog into this box.

Use single column with XY-coordinates:

Select this check box when your input table contains a certain column which contains the XY-coordinates of your points as (X,Y); the domain of such a column is a coordinate system. Any point map created or edited in ILWIS version 3 has such a column; it is called Coordinate.

If you select this check box, you will be asked for a single column containing the XY-coordinates.

If you clear this check box, you will be asked for a column containing the X-coordinates, for a column with the Y-coordinates and for a coordinate system.

 

Check box 'Use single column with XY-coordinates' is selected:

XY column:

Select a column from the table which contains the XY-coordinates of the points as (X,Y). The domain of the column should be a coordinate system.

Check box 'Use single column with XY-coordinates' is cleared:

X column:

Select a column from the table which contains the X-coordinates of the points. The column should have a value domain.

Y column:

Select a column from the table which contains the Y-coordinates of the points. The column should have a value domain.

Coordinate system:

Select an existing coordinate system for the output point map or create a new coordinate system (create button) in which the coordinates of the selected X-coordinate column and Y-coordinate column fit.

 

Domain of output map:

In case your input table uses an ID domain, choose whether the points in the output point map:

  • should obtain the same IDs as found in the domain of the input table, or
  • should obtain the class names, IDs, or values as found in an attribute column of the table.

In case your input table uses a class domain, the points in the output point map:

  • will obtain the class names, IDs, or values as found in an attribute column of the table.

In case your input table is a table with domain None, choose whether the points in the output point map:

  • should obtain new IDs, based on the record numbers of the table, or
  • should obtain the class names, IDs, or values as found in an attribute column of the table.

 

Input table uses an ID domain:

Use table domain:

Select this option when the points in the output point map should obtain the same IDs as found in the domain of the input table. Your input table will be linked as an attribute table to the output point map.

Use attribute column:

Select this option when the points in the output point map should obtain the class names, IDs, or values as found in an attribute column of the table. Subsequently, select the attribute column.

Column:

From the input table, select an attribute column which contains the class names, IDs, or values that should be assigned to the output points.

Input table uses domain None:

Use record numbers as IDs:

Select this option when the points in the output point map should obtain new IDs that are based on the record numbers of the table. The following will happen:

  • a new ID domain will be created (with the same name as output point map),
  • the IDs in the new domain will start with the Domain Prefix as specified below, followed by the record numbers as found in the input table,
  • the output point map will use the new ID domain,
  • the domain of the input table will be changed from domain None to the new ID domain,
  • the table will be linked as attribute table to the output point map.

Domain prefix:

Accept the default prefix or type your own prefix.

Use column of table:

Select this option when the points in the output point map should obtain the class names, IDs, or values as found in a column in the input table. Subsequently, select the column.

Column:

From the input table, select a column which contains the class names, IDs, or values that should be assigned to the output points.

Input table uses any other domain:

Column:

From the input table, select an attribute column which contains the class names, IDs, or values that should be assigned to the output points.

 

Output point map:

Type a name for the output point map.

Description:

Optionally, type a description for the output map. The description will appear in the status bar of the Main window when moving the mouse pointer over the map in a Catalog, and in the title bar of a map window when the output map is displayed. If no description is supplied, the output map will use its own definition as description.

When you click the Show button, the dependent output map will be defined, calculated and shown. When you click the Define button, the dependent output map will only be defined; if necessary, the map will be calculated later, for instance when the map is opened to be displayed.

See also: