To create a graphic layer based on coordinates from messages, use the command render/create_messages_layer:

svc=render/create_messages_layer&params={"layerName":<text>,
					 "itemId":<long>,
					 "timeFrom":<uint>,
					 "timeTo":<uint>,
					 "tripDetector":<bool>,
					 "trackColor":<text>,
					 "trackWidth":<int>,
					 "arrows":<bool>,
					 "points":<bool>,
					 "pointColor":<text>,
					 "annotations":<bool>,
					 "flags":<uint>}

Current request can't be executed simultaneously with following requests:

• report/exec_report,
• report/export_result,
• report/get_result_chart,
• report/get_result_map,
• messages/load_interval,
• unit/get_trips,
• resource/get_driver_bindings,
• resource/get_trailer_bindings,
• all requests from chapter Export and import,
• account/get_account_history.

You can find an example of this request in the sample Messages.

Markers flags:

{
	"name":<text>,	/* layer name */
	"bounds":[	/* layer bounds */
		<double>,	/* minimal latitude */
		<double>,	/* minimal longitude */
		<double>,	/* maximal latitude */
		<double>	/* maximal longitude */
	],
	"units":[	/* array of units */
		{
			"id":<long>,		/* unit ID */
			"msgs":{		/* information about messages */
				"count":<uint>,		/* messages count */
				"first":{		/* first message */
					"time":<uint>,		/* time */
					"lat":<double>,		/* latitude */
					"lon":<double>		/* longitude */
				},
				"last":{		/* last message */
					"time":<uint>,		/* time */
					"lat":<double>,		/* latitude */
					"lon":<double>		/* longitude */
				}
			},
			"mileage":<double>,	/* mileage for interval (metres) */
			"max_speed":<unit>	/* maximal speed for interval */
		}
	]
}

See also Get tiles of graphic layers.