Manage symbology items

The Manage user defined symbology page, in the Symbology pane, is used for many management tasks of the symbology items:

• Add—Add another symbology item for this layer.
• Validate—Validate symbology items. This is important if you imported a layer file.
• Move selected values up—Move the symbology item up in the list.
• Move selected values down—Move the symbology item down in the list.
• Copy—Make a duplicate of the symbology item. Once you have created a duplicate, you can use Edit Item and Edit Symbol to customize it.
• Remove—Delete the symbology item. This is important when there is a symbology item that fails validation.
• Apply—Use the symbology item to draw the raster layer in the map and set the proper variable or template.
• Edit item—Edit the properties of the symbology item, such as Symbology Name, Symbology Type, Processing Type, and Name of the processing type.
• Edit Symbol—Edit the symbology parameters of the symbology item. When you have updated the symbology properties, click the Back button to return to the Manage user defined symbology page. Any updates to the symbology item will not update the map drawing unless you apply the symbology item.

Import from layer file

To use a layer file that has multiple symbology items stored, you first must import the layer file into the raster layer. If you are working with a layer file that already has multiple symbology items registered, you can skip this section.

1. In the Contents pane, select the raster layer that you are working with.
2. Open the Symbology pane.
3. In the Symbology pane, click the Options button .
4. Click Import from layer file.

Now the raster layer has the registered symbology items.

Validate

Validation is used to make sure that the symbology items are valid for the source layer. After you import a layer file, it is recommended that you run validation on the symbology items.

1. In the Contents pane, select the raster layer that you are working with.
2. Open the Symbology pane.
3. Click Manage Symbology.

   The Manage user defined symbology page appears in the Symbology pane.

4. Click the Validate button.

Any symbology items that fail validation either must be deleted or must be edited to be valid.

Remove

When a symbology item is no longer needed or is not valid, you can remove it from the Manage Symbology page.

1. On the Manage user defined symbology page, identify which symbology items need to be deleted.
2. Click Remove for that symbology item.

Any edits made to the symbology items are not automatically saved. Once you are finished managing the symbology items save the layer file.

Add

The Manage Symbology page can also be used to add a symbology item.

1. In the Contents pane, select the raster layer that you are working with.
2. Open the Symbology pane, and set up the symbology parameters.
3. In the Symbology pane, click the Options button .
4. Click Manage Symbology.

   The Manage user defined symbology page appears in the Symbology pane.

5. On the Manage user defined symbology page, click the Add button.

   This opens the Symbology items properties page in the Symbology pane.

6. Type a name for the Symbology Name item.
7. Click OK.

Any edits made to the symbology items are not automatically saved. Once you are finished managing the symbology items save the layer file.

Copy

To update a symbology item, you can duplicate a symbology item and then edit it.

1. In the Contents pane, select the raster layer that you are working with.
2. In the Symbology pane, click the Options button .
3. Click Manage Symbology.

   The Manage user defined symbology page appears in the Symbology pane.

4. On the Manage user defined symbology page, click Copy on the item that you want to duplicate.
5. Optionally, click Edit item to rename the symbology item or to adjust the properties.
6. Optionally, click Edit symbol to adjust the symbology parameters.

Any edits made to the symbology items are not automatically saved. Once you are finished managing the symbology items save the layer file.

Edit item

You can change the properties of a symbology item, such as Symbology Name, Processing Type, or Name of the variable or template.

1. In the Contents pane, select the raster layer that you are working with.
2. In the Symbology pane, click the Options button .
3. Click Manage Symbology.

   The Manage user defined symbology page appears in the Symbology pane.

4. On the Manage user defined symbology page, click Edit item.
5. Adjust properties on the Symbology items properties page.
6. Click OK to return to the Manage user defined symbology page.

Any edits made to the symbology items are not automatically saved. Once you are finished managing the symbology items save the layer file.

Edit symbol

You can change the parameters of a symbology item, such as band combination, stretch type, and so on.

1. In the Contents pane, select the raster layer that you are working with.
2. Open the Symbology pane.
3. Click the Primary Symbology drop-down list and choose a user-defined symbology item.
4. In the Symbology pane, click the Options button .
5. Click Manage Symbology.

   The Manage user defined symbology page appears in the Symbology pane.

6. On the Manage user defined symbology page, click Edit symbol to adjust the parameters of the symbology item.

   The Edit symbol option is only available for the current symbology item that you are working with.

7. Adjust any symbology parameters on the Symbology page.
8. In the Symbology pane, click the Options button .
9. Click Register Symbology.

   The Symbology item properties page appears in the pane.

10. Click OK to register the symbology item.

    This symbology item now shows in the drop-down list for Primary Symbology, in the Symbology pane.

11. Click Yes to overwrite the existing symbology item.

Any edits made to the symbology items are not automatically saved. Once you are finished managing the symbology items save the layer file.

Apply

Once you finish editing and adjusting the symbology items, you can use them to display the raster layer.

1. In the Contents pane, select the raster layer that you are working with.
2. In the Symbology pane, click the Options button .
3. Click Manage Symbology.

   The Manage user defined symbology page appears in the Symbology pane.

4. On the Manage user defined symbology page, identify which symbology items you want to use to draw the raster layer.
5. Click Apply for that symbology item.
6. Click the Back button to return to the Symbology pane.