Grafana panel - about conversion

About conversion

About transformations

The transformation processes the query result set before passing it for visualization . Use transformation , You can ：

• Rename field
• Add time series data
• Perform mathematical operations across queries
• Use the output of one transformation as the input of another

For users who rely on multiple views of the same dataset , Transformation provides an effective way to create and maintain a large number of dashboards .

You can also use the output of one transformation as the input of another , To improve performance .

Sometimes the system cannot draw the converted data . When this happens , single click ​​Table view​​ Visualize the toggle switch above to switch to the tabular view of the data . This can help you understand the final result of the transformation .

Conversion type

Grafana Provides a variety of methods to convert data . A complete list of transformations , see also ​ ​ Conversion function ​​.

Conversion order

When there are multiple conversions ,Grafana They will be applied in the order they are listed . Each transformation creates a result set , Then it is passed to the next transformation in the processing pipeline .

Grafana The order in which the transformation is applied directly affects the result . for example , If you use Reduce The transformation compresses all the results of a column into a single value , Then you can only apply the transformation to this single value .

Add a conversion function to the data

The following steps will guide you through adding transformations to your data . This document does not include steps for each conversion type . A complete list of transformations , See conversion function .

To apply the conversion function to the data ：

1. Navigate to the panel where you want to add one or more transformations .
2. Click panel title , And then click edit Edit.
3. single click transformation Transform tab .
4. Click on a transformation .
   A conversion line will appear , You can configure conversion options . More information about how to configure transformations , See conversion function .
   Information about available calculations , See calculation type .
6. To apply another transformation , Please click on the Add transformation Add transform.
   This transformation works on the result set returned by the previous transformation .

Debug conversion

To view the input and output result sets of the transformation , Please click the error icon on the right side of the conversion line .

Input and output result sets can help you debug the transformation .

Delete transformation

We recommend that you delete unwanted transformations . When deleting transformation , Data will be deleted from the visualization .

To delete the transformation ：

1. Open a panel for editing .
2. single click transformation tab .
3. Click the trash can icon next to the transformation you want to delete .

Conversion function

grafana Common conversion functions

​ ​https://blog.51cto.com/u_12227788/5471570​​