Currently there is no dedicated connector option in Spotfire Analyst to connect to Elasticsearch. 
There is an existing enhancement request on the Spotfire Ideas Portal: https://ideas.spotfire.com/ideas/TS-I-5650

How to connect Elasticsearch with Spotfire Analyst

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Below are some workarounds which can be used to connect Spotfire Analyst to Elasticsearch:

1) We can connect to Elasticsearch with Dremio connector. 
    NOTE: Dremio connector is only available in TIBCO Spotfire 10.0 and higher.

2) Another way to connect to Elasticsearch is by using the JDBC/Connector connection of TIBCO Data Virtualization(TDV). There is a dedicated adapter for Elasticsearch in the latest release of TDV (version 8.x and higher). You can publish the table(s) as a view inside TIBCO Data Virtualization and then connect to that data source using JDBC/ODBC Connector connection from Spotfire Analyst.

For more information refer the links below:
https://docs.tibco.com/pub/tdv/8.8.0/doc/pdf/TIB_tdv_8.8.0_AdapterGuide_Elasticsearch.pdf?id=82

3) If you wish to connect through the ODBC connection then you can download the Elasticsearch ODBC driver and use the generic ODBC connection in Spotfire Analyst.
    Link to download ODBC driver: https://www.elastic.co/downloads/odbc-client

4) Check the blog below for importing Elasticsearch data into Spotfire using R and a Data Function 
    Reference Link: https://capiot.com/blog/importing-elasticsearch-data-into-tibco-spotfire-using-r/