RAS Tiles

Using the RAS Tiles option allows the user to view the RAS Tiles data through a web browser hosted on a web server.  The RAS Tiles server software was developed using open source tools. Hapi (hapijs.com) is used for the server framework and Leaflet (leafletjs.com) is used for the interactive mapping capability.  The RAS Tiles server software is available from the HEC-RAS software downloads web page.

Once the web server is running, launch a web browser pointing to the server. A web page with the “RAS Tiles” title at the top of the web page provides access to RAS Results data.  Individual RAS Project datasets in the ”.db” files are available for display as indicated by the RAS project name with sub headings listing the available Plans.

Local Viewing Instructions:

	1.	Download and unzip the “RASTiles_server.zip” file from the HEC-RAS software download web page (64-bit OS).

	2.	Copy the “rasplanshortid.db” files to the “tilesets” folder in the RAS Tiles directory.

	3.	Start the tile server by running the “RASTiles.bat” script.
	a.	This can also be accomplished by starting the tile server using the command line by navigating to the install directory and typing “node server” and hitting Enter.

	4.	Open the “RASTiles.html” file in a web browser.
	a.	This can be accomplished by opening a web browser and typing 
	“http://localhost:3000/”   

	5.	If additional tile datasets (.db files) are to be viewed, the server will need to be restarted, after copying the .db files into the “tilesets” folder.
	a.	To stop the web server, close the CMD prompt.
	b.	Start the server as discussed in Step 3.
	
Web Server Hosting Instructions:

	1.	The server must be started as described for local viewing.
	
	2.	An Information Technology specialist will need to set up server security/policy so that the web server may be accessible via the web to mobile clients.
	
	3.	Provide the web client with the URL to the web server.  Note, the server address will be shown in the CMD prompt window.