Displaying and Editing Data Source Information

Displaying Data Source Information

To view the information for a data source (DS), open the menu associated with the desired DS and select View Information. The interface consists of two tabs: Information and Attributes.

Information Tab

This tab displays general details about the data source:

• Name and description

• References: projects, layers, and/or tables using this data source

• Associated tags

For spatial DS, an interactive map is displayed:

• A dotted outline indicates the geographic extent of the DS

• The base map is provided by OpenStreetMap

• Features are loaded progressively, up to a maximum of 50,000 elements. Any elements beyond this limit are not displayed

• Digital Elevation Models (DEM) from GeoTIFF files are shown in grayscale

Additional technical information is also displayed:

• DS identifier (click to copy to clipboard)

• Unique identifier within JMap Cloud

• Coordinate Reference System (CRS)

• Total number of elements in the DS

For tabular DS, a navigable data table is shown, along with:

• The number of loaded rows

• The total number of records in the table

Attributes Tab

This tab lists all attributes (or fields) of the DS. For each attribute, three sections are available:

• Settings: title, data type, and indexing status

• Statistics: value statistics (depending on the attribute type)

• Value Domain: displays the current domain (if any), or allows you to create one

Value Domain

A value domain defines the valid set (finite or infinite) of values that an attribute can take—typically for text or numeric fields.

To create a value domain:

1. Click Create Value Domain

2. The Value and Label columns appear

3. Click + to add a row

4. Enter the value and its label

5. Click to save or to cancel

6. Repeat to add additional values

You can:

• Remove individual values by clicking the icon

• Delete the entire domain by clicking Delete Value Domain

Editing Parameter Values

You can modify some parameters:

1. If you have edit permissions for the DS, when you hover over the Description, Labels, and Unique identifier (SDS) parameters, the icon appears, allowing you to edit the parameter.

2. Also, if you have edit permissions, you can edit attribute/field titles, index them (by checking the box Indexed), and create, modify, or delete a value domain for text or quantitative attributes.

3. Press or to save or discard changes.

Only indexed attributes can be used in simple searches (searching for elements in a project's layers based on attribute values) in the NG application.

Editing Parameters

If you have editing permissions on the DS, you can modify certain parameters directly in the interface:

• Hovering over the Description, Tags, or Unique Identifier (for spatial DS) displays the icon, allowing you to make edits

• You can also:

  • Edit attribute titles

  • Toggle indexing

  • Create, modify, or delete value domains (for text or numeric attributes)

Click to save or to cancel your changes.

Only indexed attributes can be used in simple searches within the JMap NG mapping application (i.e., searching for features in layers based on attribute values).