操作方法：在 ArcGIS Pro 中使用 Arcade 保留标注中小数点后的零

摘要

When editing labels with numeric data to two decimal places using the Round() function in an Arcade expression, the trailing zeros after the decimal point are not retained. It is sometimes necessary to retain the zeros after the decimal point in a label to ensure data accuracy and consistency.

In this article, the length of the highways must be rounded to two decimal places; however, the zeros after the decimal point are not displayed. For example, 0.50 is displayed as 0.5, and 1.00 is displayed as 1, as shown in the following image. 

The workflow to retain the trailing zeros after a decimal point in labels using the Text() function in an Arcade expression in ArcGIS Pro is provided below.

过程

To retain trailing zeros after a decimal point, use the Text() function.

Note: 
Refer to ArcGIS Arcade: Text for more information.

1. Launch ArcGIS Pro, and open the desired project.
2. In the Contents pane, click the feature layer.
3. On the ribbon, click the Labeling tab on the Feature Layer contextual tab set.

4. In the Label Class group, click the Field drop-down arrow, and select the field for labeling. Click the Expression icon to display the Label Class – <layer_name> pane.

5. In the Label Class – <layer_name> pane, on the Label expression tab, click the Language drop-down arrow, and select Arcade.

6. In the Expression text box, type the following expression to round off the numeric data to two decimal places, and retain the trailing zeros after the decimal point. Click Verify.

Text($feature.fieldname, '#,###.00')

7. When the message, 'Expression is valid' is returned, click Apply.

The image below shows the trailing zeros are retained in the labels.