In the OBI URL, http://<server>:<port>/analytics, replace analytics with /dv/ui.
The URL to access Data Visualization user interface is:
http://<host>:<port>/dv/ui
where:
<server> is the server name or IP address of the server where OBI is installed and running
<port> is the listening port number for Data Visualization
/analytics is the default context for Data Visualization.
To learn more, watch this short video on Using Data Visualization.