This topic describes how to edit a data source. After you add a data source, you can edit the content of the data source based on your display requirements.
We recommend that you edit a data source on the canvas editor page. You can also configure data mapping, add a filter, and set the automatic data update time on this page. For more information, see Data mapping, Add a filter, and Automatic update.
Procedure
- Log on to the DataV console.
- Create a visual application project by referring to the Use a template to create a PC-side visual application.
- Click a widget in the canvas.
- In the right-side configuration panel, click Configure Data Source on the Data tab.
- In the Set Data Source dialog box, modify the Data Source Type.
- Edit the data source content as shown in the example. Note When editing and modifying the data source content, you can use the Ctrl+Z key to undo this operation and return to the data frame content in the previous step.
Data mapping
In most cases, the system can automatically match categories with values of a data source. For complex data types, you must manually enter the fields to complete data mapping.
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Add a filter
You can add a filter for a data source to display data clearly. For more information, see Use the data filter.
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Automatic update
You can use the automatic update feature to automatically update data. You can also manually enter the time interval for data update.
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