Gating-ML is an open standard developed and maintained via a collaborative and consensus driven process under the auspice of the International Society for Advancement of Cytometry (ISAC). Details on Gating-ML may be found at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4874733/.

 

FCS Express allows the export and import of gates into any layout using GatingML - a standard file format to formally describe gates and facilitate the exchange of gating information between experiments and collaborators. Developed by the International Society for the Advancement of Cytometry (ISAC), the GatingML format stores a textual representation of any gate or gating hierarchy within an experiment as an XML file.

 

The GatingML format can be imported into FCS Express to add new gates or replace existing gates. Gates can also be saved and exported from FCS Express in the GatingML format for later use - such as archiving gate information or sharing gating strategies between collaborators.

 

 

Exporting Gates with GatingML

 

1.In the Gate View (or in the Gate Navigator) select one or multiple gates (to select gates hold down Ctrl then left-click the gates).

2.Right-click on the selection.

3.Select GatingML → Export (Figure 7.41).

 

 

4.Chose to export either Selected or All gates.

5.The Save As window will appear. Name the file and select the desired export location.

6.Click OK to export. All Gates on the layout will be exported as a single file in the *.GatingML format.

 

Note: Gates can also be exported in the GatingML format with Batch Processing. This option should be utilized when multiple files on the layout contain Iteration Snapshots with iteration specific gate coordinates and these iteration specific gate coordinates need to be archived or shared for collaboration purposes. When using Iteration Snapshots, the Re-Run mode should be utilized to preserve the active snapshots on the layout. NB: If Data Specific Gates are defined for one or multiple gates in an Iteration, only the Master Gate of those gates will be included in the Gating ML export.

 

 

Importing Gates with GatingML

 

Note: A layout must be set to Remember Parameter by Name to be able to import gates with the GatingML format.  After a layout has been created the Remember Parameter option cannot be changed.  A layout needs to have this option set before any kind of FCS Express template is created.

 

1.Right-click on the Gate View or Gate Navigator window.

2.Select GatingML → Import and choose the appropriate selection (Figure 7.42 and table below).

The imported gates will appear in the Gate View and Gate Navigator. To display the imported gates on a plot, right-click on the plot and select Show gates.