# World Map - Lines

**URL:** <https://discourse.nodered.org/t/world-map-lines/52376>\
**Category:** Dashboard\
**Created:** [18 October 2021 19:59 UTC](https://discourse.nodered.org/t/world-map-lines/52376 "2021-10-18T19:59:25Z")\
**Posts on this page:** 10\
**Page:** 1

<div class="post-metadata">

**Author:** ![ScheepersJohan](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/scheepersjohan/32/39556_2.png) [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Post date:** [18 October 2021 19:59 UTC](https://discourse.nodered.org/t/world-map-lines/52376/1 "2021-10-18T19:59:26Z")

</div>

Hi All,

I am trying to draw lines representing a link between two points, dependent on the rssi, the color of the line changes.

The "Link" function node is -

```auto
if (msg.payload.rssi > -100)(
    colour = "red")
    else if (msg.payload.rssi > -105)(
        colour = "orange")
        else if (msg.payload.rssi > -110)(
        colour = "yellow")
        else if (msg.payload.rssi > -115)(
        colour = "lightgreen")
        else if (msg.payload.rssi > -115)(
        colour = "teal")
        else (
        colour = "blue")
                //"layer": "Lines",
msg.payload = {"name": msg._msgid,
                "color": colour,
                "layer": "Link",
                "line": [[msg.payload.location.latitude, msg.payload.location.longitude], [msg.decoded_payload.latitude, msg.decoded_payload.longitude]]}
delete msg.parts
delete msg.decoded_payload

return msg;

```

This is the function node that draws the line, the data is called from a DB processed and then sent to this function node that sends it to the WorldMap node.

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/0/f/0fdb5b3483dc75eb37d5ff7f6b9aa4b9ab9c0ddc.png)

The issue is that the all the lines are drawn on the layer in red.

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/7/7/77da08d5e8103970519e9e3e32c5876a9fc24500.jpeg)

If I turn the "layer": "Link" off and on then lines become the correct color.  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/f/b/fb129824de86bca8f35343872b1afb3731ba96dc.jpeg)

```auto
[
    {
        "id": "cbd42246da9ac917",
        "type": "mysql",
        "z": "c95be8d7138e80c7",
        "mydb": "e15aca1763c788ca",
        "name": "",
        "x": 250,
        "y": 1320,
        "wires": [
            [
                "d40697cb3ac3d87f",
                "f8551766e828b8ae"
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        ]
    },
    {
        "id": "d40697cb3ac3d87f",
        "type": "ui_table",
        "z": "c95be8d7138e80c7",
        "group": "5aff7d5d8f1ac07b",
        "name": "json",
        "order": 2,
        "width": "30",
        "height": "20",
        "columns": [],
        "outputs": 0,
        "cts": false,
        "x": 410,
        "y": 1320,
        "wires": []
    },
    {
        "id": "99c45552cfdf596b",
        "type": "comment",
        "z": "c95be8d7138e80c7",
        "name": "json",
        "info": "",
        "x": 110,
        "y": 1280,
        "wires": []
    },
    {
        "id": "cbe845ed11062e41",
        "type": "debug",
        "z": "c95be8d7138e80c7",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": true,
        "complete": "true",
        "targetType": "full",
        "statusVal": "payload",
        "statusType": "auto",
        "x": 1090,
        "y": 1340,
        "wires": []
    },
    {
        "id": "f8551766e828b8ae",
        "type": "split",
        "z": "c95be8d7138e80c7",
        "name": "",
        "splt": "\\n",
        "spltType": "str",
        "arraySplt": 1,
        "arraySpltType": "len",
        "stream": false,
        "addname": "",
        "x": 130,
        "y": 1420,
        "wires": [
            [
                "569806dbca0761ea"
            ]
        ]
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    {
        "id": "569806dbca0761ea",
        "type": "function",
        "z": "c95be8d7138e80c7",
        "name": "JSON.parse",
        "func": "\nconst array = JSON.parse(msg.payload.json);\nmsg.payload = array\n\ndelete msg.payload.json\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 290,
        "y": 1420,
        "wires": [
            [
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    {
        "id": "ab14ce39fbd3bad3",
        "type": "function",
        "z": "c95be8d7138e80c7",
        "name": "Prep array",
        "func": "\nmsg.end_device_ids = msg.payload.end_device_ids\nmsg.received_at = msg.payload.received_at\nmsg.payload = msg.payload.uplink_message.rx_metadata\ndelete msg.topic\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 850,
        "y": 1440,
        "wires": [
            [
                "38532bb7329a9874"
            ]
        ]
    },
    {
        "id": "38532bb7329a9874",
        "type": "split",
        "z": "c95be8d7138e80c7",
        "name": "",
        "splt": "\\n",
        "spltType": "str",
        "arraySplt": 1,
        "arraySpltType": "len",
        "stream": false,
        "addname": "",
        "x": 990,
        "y": 1440,
        "wires": [
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                "2162519740094497",
                "a194aa10011a4491",
                "86b9edfe427adff1",
                "cbe845ed11062e41"
            ]
        ]
    },
    {
        "id": "d34c5f85537f6309",
        "type": "function",
        "z": "c95be8d7138e80c7",
        "name": "Decoder - Micro Tracker",
        "func": "let data = msg.payload.uplink_message.frm_payload;\n bytes = new Buffer(data,'Base64');\n\nlet decoded = context.Decoder(bytes, msg.payload.uplink_message.f_port);\nmsg.decoded_payload = decoded;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "context.Decoder = function(bytes, port) {\n function step_size(lo, hi, nbits, nresv) {\n return 1.0 / ((((1<<nbits) - 1) - nresv) / (hi - lo));\n }\n\n function mt_value_decode(value, lo, hi, nbits, nresv) {\n return (value - nresv / 2) * step_size(lo, hi, nbits, nresv) + lo;\n }\n\n // Gets the zero-based unsigned numeric value of the given bit(s)\n function bits(value, lsb, msb) {\n var len = msb - lsb + 1;\n var mask = (1<<len) - 1;\n return value>>lsb & mask;\n }\n\n // Gets the boolean value of the given bit\n function bit(value, bit) {\n return (value & (1<<bit)) > 0;\n }\n\n // Gets a hexadecimal representation ensuring a leading zero for each byte\n function hex(bytes, separator) {\n return bytes.map(function (b) {\n return (\"0\" + b.toString(16)).substr(-2);\n }).join(separator || \"\");\n }\n\n // Decodes 4 bytes into a signed integer, MSB\n function int32(bytes) {\n // JavaScript bitwise operators always work with 32 bits signed integers\n return bytes[0]<<24 | bytes[1]<<16 | bytes[2]<<8 | bytes[3];\n }\n\n // Decodes 4 bytes into an unsigned integer, MSB\n function uint32(bytes) {\n \n return (bytes[0]<<24 | bytes[1]<<16 | bytes[2]<<8 | bytes[3])>>>0; \n }\n\n // Decodes 1 to 4 MAC addresses and their RSSI\n function mac_rssi(bytes) {\n var items = [];\n for (var offset = 0; offset < bytes.length; offset += 7) {\n items.push({\n mac_address: hex(bytes.slice(offset, offset + 6), \":\"),\n // Sign-extend to 32 bits to support negative values; dBm\n rssi: bytes[offset + 6]<<24>>24,\n });\n }\n return items;\n }\n\n function message(code, descriptions) {\n return {\n code: code,\n description: code < 0 || code >= descriptions.length ? \"UNKNOWN\" : descriptions[code]\n };\n }\n\n var decoded = {};\n var i;\n\n var type = bytes[0];\n\n // All message types, except for Frame pending messages, share the same header\n if (type !== 0x00) {\n // Note: the Data Storage Integration stores nested objects as text\n decoded.status = {\n mode: message(bits(bytes[1], 5, 7), [\"Standby\", \"Motion tracking\", \"Permanent tracking\",\n \"Motion start/end tracking\", \"Activity tracking\", \"OFF\"]),\n sos: bit(bytes[1], 4),\n tracking: bit(bytes[1], 3),\n moving: bit(bytes[1], 2),\n periodic: bit(bytes[1], 1),\n on_demand: bit(bytes[1], 0)\n };\n\n // Trackers with a rechargeable battery:the percentage reflects the actual value\n decoded.battery = bytes[2]/100;\n decoded.battery = bytes[2];\n //Temperature\n decoded.temperature = Math.round(100 * mt_value_decode(bytes[3], -44, 85, 8, 0)) / 100;\n \n decoded.ack = bits(bytes[4], 4, 7);\n \n decoded.data = bits(bytes[4], 0, 3);\n //MCU and BLE fwVersion\n decoded.lastResetCause = \"lastResetCause: \" + bytes[5];\n decoded.mcuFirmware = \"fwVersion: \" + bytes[6] + \".\" + bytes[7] + \".\" + bytes[8];\n decoded.bleFirmware = \"bleFwVersion\" + bytes[9] + \".\" + bytes[10] + \".\" + bytes[11];\n\n }\n\n switch (type) {\n case 0x00:\n decoded.type = \"FRAME PENDING\";\n decoded.token = bytes[1];\n break;\n\n case 0x03:\n decoded.type = \"POSITION\";\n switch (decoded.data) {\n case 0:\n decoded.position_type = \"GPS fix\";\n decoded.age = mt_value_decode(bytes[5], 0, 2040, 8, 0);\n // Signed 32 bits integers; LSB is always zero\n decoded.latitude = (bytes[6]<<24 | bytes[7]<<16 | bytes[8]<<8) / 1e7;\n decoded.longitude = (bytes[9]<<24 | bytes[10]<<16 | bytes[11]<<8) / 1e7;\n // Estimated Horizontal Position Error\n decoded.ehpe = mt_value_decode(bytes[12], 0, 1000, 8, 0);\n break;\n\n case 1:\n decoded.position_type = \"GPS timeout\";\n decoded.timeout_cause = message(bytes[5], [\"User timeout cause\"]);\n for (i = 0; i < 4; i++) {\n // Carrier over noise (dBm) for the i-th satellite seen\n decoded[\"cn\" + i] = mt_value_decode(bytes[6 + i], 0, 2040, 8, 0);\n }\n break;\n\n case 2:\n // Documented as obsolete\n decoded.error = message(0, [\"UNSUPPORTED POSITION TYPE \" + decoded.data]);\n break;\n\n case 3:\n decoded.position_type = \"WIFI timeout\";\n for (i = 0; i < 6; i++) {\n decoded[\"v_bat\" + (i + 1)] = mt_value_decode(bytes[5 + i], 2.8, 4.2, 8, 2);\n }\n break;\n\n case 4:\n decoded.position_type = \"WIFI failure\";\n for (i = 0; i < 6; i++) {\n // Most of time a WIFI timeout occurs due to a low battery condition\n decoded[\"v_bat\" + (i + 1)] = mt_value_decode(bytes[5 + i], 2.8, 4.2, 8, 2);\n }\n decoded.error = message(bytes[11], [\"WIFI connection failure\", \"Scan failure\",\n \"Antenna unavailable\", \"WIFI not supported on this device\"]);\n break;\n\n case 5:\n case 6:\n decoded.position_type = \"LP-GPS data\";\n // Encrypted; not described in the documentation\n decoded.error = message(0, [\"UNSUPPORTED POSITION TYPE \" + decoded.data]);\n break;\n\n case 7:\n decoded.position_type = \"BLE beacon scan\";\n decoded.age = mt_value_decode(bytes[5], 0, 2040, 8, 0);\n // Remaining data: up to 4 beacons\n decoded.beacons = mac_rssi(bytes.slice(6));\n break;\n\n case 8:\n decoded.position_type = \"BLE beacon failure\";\n decoded.error = message(bytes[5], [\"BLE is not responding\", \"Internal error\", \"Shared antenna not available\",\n \"Scan already on going\", \"No beacon detected\", \"Hardware incompatibility\"]);\n break;\n\n // Test with: 0358D895090EC46E1FF44B9EB76466B3B87454AD500959CA1ED4AD525E67DA14A1AC\n // or 032CD1890900C46E1FF44B9EC5C83A355A3898A6\n case 9:\n decoded.position_type = \"WIFI BSSIDs\";\n decoded.age = mt_value_decode(bytes[5], 0, 2040, 8, 0);\n // Remaining data: up to 4 WiFi BSSIDs\n decoded.stations = mac_rssi(bytes.slice(6));\n break;\n\n default:\n decoded.error = message(0, [\"UNSUPPORTED POSITION TYPE \" + decoded.data]);\n }\n break;\n\n case 0x04:\n decoded.type = \"ENERGY STATUS\";\n break;\n\n case 0x05:\n decoded.type = \"HEARTBEAT\";\n break;\n\n case 0x07:\n // Activity status message and configuration message share the same identifier\n var tag = bytes[5];\n switch (tag) {\n case 1:\n decoded.type = \"ACTIVITY STATUS\";\n decoded.activity_counter = uint32(bytes.slice(6, 10));\n break;\n\n case 2:\n decoded.type = \"CONFIGURATION\";\n for (i = 0; i < 5; i++) {\n var offset = 6 + 5 * i;\n decoded[\"param\" + i] = {\n type: bytes[offset],\n value: uint32(bytes.slice(offset + 1, offset + 5))\n };\n }\n break;\n\n default:\n decoded.error = message(0, [\"UNSUPPORTED POSITION TYPE \" + decoded.data + \"/\" + tag]);\n }\n break;\n\n case 0x09:\n decoded.type = \"SHUTDOWN\";\n break;\n\n case 0xFF:\n decoded.type = \"DEBUG\";\n break;\n\n default:\n decoded.error = message(0, [\"UNSUPPORTED MESSAGE TYPE \" + type]);\n }\n\n // Just some redundant debug info\n decoded.debug = {\n payload: hex(bytes),\n length: bytes.length,\n port: port,\n server_time: new Date().toISOString()\n };\n\n return decoded;\n}\n",
        "finalize": "",
        "libs": [],
        "x": 510,
        "y": 1420,
        "wires": [
            [
                "3b11c0953e60f2fc"
            ]
        ]
    },
    {
        "id": "3b11c0953e60f2fc",
        "type": "switch",
        "z": "c95be8d7138e80c7",
        "name": "",
        "property": "decoded_payload.latitude",
        "propertyType": "msg",
        "rules": [
            {
                "t": "nnull"
            }
        ],
        "checkall": "true",
        "repair": false,
        "outputs": 1,
        "x": 690,
        "y": 1440,
        "wires": [
            [
                "ab14ce39fbd3bad3",
                "e10ea59d357c0371"
            ]
        ]
    },
    {
        "id": "ebf062319e90978f",
        "type": "ui_worldmap",
        "z": "c95be8d7138e80c7",
        "group": "ee8b70d64868c9f1",
        "order": 0,
        "width": 0,
        "height": 0,
        "name": "",
        "lat": "-29.7",
        "lon": "30.2",
        "zoom": "",
        "layer": "OSM",
        "cluster": "",
        "maxage": "",
        "usermenu": "hide",
        "layers": "hide",
        "panit": "false",
        "panlock": "false",
        "zoomlock": "false",
        "hiderightclick": "true",
        "coords": "none",
        "showgrid": "false",
        "allowFileDrop": "false",
        "path": "/worldmap",
        "mapname": "",
        "mapurl": "",
        "mapopt": "",
        "mapwms": false,
        "x": 1300,
        "y": 1380,
        "wires": []
    },
    {
        "id": "3ab507f600e582c1",
        "type": "worldmap",
        "z": "c95be8d7138e80c7",
        "name": "",
        "lat": "",
        "lon": "",
        "zoom": "",
        "layer": "",
        "cluster": "",
        "maxage": "",
        "usermenu": "show",
        "layers": "show",
        "panit": "false",
        "panlock": "false",
        "zoomlock": "false",
        "hiderightclick": "false",
        "coords": "false",
        "showgrid": "false",
        "allowFileDrop": "false",
        "path": "/worldmap",
        "mapname": "",
        "mapurl": "",
        "mapopt": "",
        "mapwms": false,
        "x": 1320,
        "y": 1440,
        "wires": []
    },
    {
        "id": "2162519740094497",
        "type": "function",
        "z": "c95be8d7138e80c7",
        "name": "Links",
        "func": "\nif (msg.payload.rssi > -100)(\n colour = \"red\")\n else if (msg.payload.rssi > -105)(\n colour = \"orange\")\n else if (msg.payload.rssi > -110)(\n colour = \"yellow\")\n else if (msg.payload.rssi > -115)(\n colour = \"lightgreen\")\n else if (msg.payload.rssi > -115)(\n colour = \"teal\")\n else (\n colour = \"blue\")\n //\"layer\": \"Lines\",\nmsg.payload = {\"name\": msg._msgid,\n \"color\": colour,\n \"layer\": \"Link\",\n \"line\": [[msg.payload.location.latitude, msg.payload.location.longitude], [msg.decoded_payload.latitude, msg.decoded_payload.longitude]]}\ndelete msg.parts\ndelete msg.decoded_payload\n\n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 1130,
        "y": 1400,
        "wires": [
            [
                "3ab507f600e582c1"
            ]
        ]
    },
    {
        "id": "c69411934537a7cb",
        "type": "ui_button",
        "z": "c95be8d7138e80c7",
        "name": "",
        "group": "ee8b70d64868c9f1",
        "order": 3,
        "width": 0,
        "height": 0,
        "passthru": false,
        "label": "button",
        "tooltip": "",
        "color": "",
        "bgcolor": "",
        "className": "",
        "icon": "",
        "payload": "",
        "payloadType": "str",
        "topic": "SELECT * FROM soiot.json order by timestamp desc;",
        "topicType": "str",
        "x": 110,
        "y": 1320,
        "wires": [
            [
                "cbd42246da9ac917"
            ]
        ]
    },
    {
        "id": "a194aa10011a4491",
        "type": "function",
        "z": "c95be8d7138e80c7",
        "name": "Gateways",
        "func": "\nmsg.payload = { \"name\": msg.payload.gateway_ids.gateway_id, \"lat\":msg.payload.location.latitude, \"lon\":msg.payload.location.longitude, \"icon\": \"cloud\", \"iconColor\": 'blue'}\n\ndelete msg.parts\ndelete msg.decoded_payload\n\n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 1140,
        "y": 1440,
        "wires": [
            [
                "3ab507f600e582c1"
            ]
        ]
    },
    {
        "id": "86b9edfe427adff1",
        "type": "function",
        "z": "c95be8d7138e80c7",
        "name": "Nodes",
        "func": "\nif (msg.payload.rssi > -100)(\n colour = \"red\")\n else if (msg.payload.rssi > -105)(\n colour = \"orange\")\n else if (msg.payload.rssi > -110)(\n colour = \"yellow\")\n else if (msg.payload.rssi > -115)(\n colour = \"lightgreen\")\n else if (msg.payload.rssi > -115)(\n colour = \"teal\")\n else (\n colour = \"blue\")\n\n\n\n\nmsg.payload = { \"name\": msg._msgid, \"lat\":msg.decoded_payload.latitude, \"lon\":msg.decoded_payload.longitude, \"icon\":\"fa-circle\", \"iconColor\": colour, \"dev_eui\":msg.end_device_ids.dev_eui, \"time\":msg.received_at, \"rssi\":msg.payload.rssi}\n\ndelete msg.parts\ndelete msg.decoded_payload\n\n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 1130,
        "y": 1480,
        "wires": [
            [
                "3ab507f600e582c1"
            ]
        ]
    },
    {
        "id": "e10ea59d357c0371",
        "type": "debug",
        "z": "c95be8d7138e80c7",
        "name": "",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": true,
        "complete": "true",
        "targetType": "full",
        "statusVal": "payload",
        "statusType": "auto",
        "x": 790,
        "y": 1360,
        "wires": []
    },
    {
        "id": "4959bd61ad1704ba",
        "type": "function",
        "z": "c95be8d7138e80c7",
        "name": "Decoder - Micro Tracker",
        "func": "let data = msg.payload.uplink_message.frm_payload;\n bytes = new Buffer(data,'Base64');\n\nlet decoded = context.Decoder(bytes, msg.payload.uplink_message.f_port);\nmsg.decoded_payload = decoded;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "// Decode an uplink message from an array of bytes to an object of fields\ncontext.Decoder = function Decoder(bytes, port)\n{\n var decoded = {};\n if (port === 1)\n {\n decoded.type = \"position\";\n\n decoded.latitude = bytes[0] + bytes[1] * 256 +\n bytes[2] * 65536 + bytes[3] * 16777216;\n if (decoded.latitude >= 0x80000000)\n decoded.latitude -= 0x100000000;\n decoded.latitude /= 1e7;\n\n decoded.longitude = bytes[4] + bytes[5] * 256 +\n bytes[6] * 65536 + bytes[7] * 16777216;\n if (decoded.longitude >= 0x80000000)\n decoded.longitude -= 0x100000000;\n decoded.longitude /= 1e7;\n\n decoded.inTrip = ((bytes[8] & 0x1) !== 0) ? true : false;\n decoded.fixFailed = ((bytes[8] & 0x2) !== 0) ? true : false;\n decoded.manDown = ((bytes[8] & 0x4) !== 0) ? true : false;\n decoded.headingDeg = (bytes[9] & 0x7) * 45;\n\n decoded.speedKmph = (bytes[9] >> 3) * 5;\n decoded.batV = bytes[10] * 0.025;\n }\n else if (port === 2)\n {\n decoded.type = \"downlink ack\";\n\n decoded.sequence = (bytes[0] & 0x7F);\n decoded.accepted = ((bytes[0] & 0x80) !== 0) ? true : false;\n decoded.fwMaj = bytes[1];\n decoded.fwMin = bytes[2];\n }\n else if (port === 3)\n {\n decoded.type = \"stats\";\n\n decoded.initialBatV = 4.0 + 0.100 * (bytes[0] & 0xF);\n decoded.txCount = 32 * ((bytes[0] >> 4) + (bytes[1] & 0x7F) * 16);\n decoded.tripCount = 32 * ((bytes[1] >> 7) + (bytes[2] & 0xFF) * 2\n + (bytes[3] & 0x0F) * 512);\n decoded.gpsSuccesses = 32 * ((bytes[3] >> 4) + (bytes[4] & 0x3F) * 16);\n decoded.gpsFails = 32 * ((bytes[4] >> 6) + (bytes[5] & 0x3F) * 4);\n decoded.aveGpsFixS = 1 * ((bytes[5] >> 6) + (bytes[6] & 0x7F) * 4);\n decoded.aveGpsFailS = 1 * ((bytes[6] >> 7) + (bytes[7] & 0xFF) * 2);\n decoded.aveGpsFreshenS = 1 * ((bytes[7] >> 8) + (bytes[8] & 0xFF) * 1);\n decoded.wakeupsPerTrip = 1 * ((bytes[8] >> 8) + (bytes[9] & 0x7F) * 1);\n decoded.uptimeWeeks = 1 * ((bytes[9] >> 7) + (bytes[10] & 0xFF) * 2);\n }\n return decoded;\n}\n",
        "finalize": "",
        "libs": [],
        "x": 510,
        "y": 1460,
        "wires": [
            [
                "3b11c0953e60f2fc"
            ]
        ]
    },
    {
        "id": "e15aca1763c788ca",
        "type": "MySQLdatabase",
        "name": "",
        "host": "dbsoiot.civilwbkm1wy.eu-west-1.rds.amazonaws.com",
        "port": "3306",
        "db": "soiot",
        "tz": "",
        "charset": "UTF8"
    },
    {
        "id": "5aff7d5d8f1ac07b",
        "type": "ui_group",
        "name": "json",
        "tab": "fb6f9c9fea96c38c",
        "order": 5,
        "disp": true,
        "width": "36",
        "collapse": false,
        "className": ""
    },
    {
        "id": "ee8b70d64868c9f1",
        "type": "ui_group",
        "name": "map",
        "tab": "fb6f9c9fea96c38c",
        "order": 6,
        "disp": true,
        "width": "36",
        "collapse": false,
        "className": ""
    },
    {
        "id": "fb6f9c9fea96c38c",
        "type": "ui_tab",
        "name": "DB Managment",
        "icon": "dashboard",
        "order": 1,
        "disabled": false,
        "hidden": fals
    }
]

```

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<div class="post-metadata">

**Author:** ![ScheepersJohan](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/scheepersjohan/32/39556_2.png) [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Post date:** [26 October 2021 15:07 UTC](https://discourse.nodered.org/t/world-map-lines/52376/2 "2021-10-26T15:07:41Z")

</div>

Initially the line color appears red , if I turn the Line layer off and back on the lines appear the correct color. Have anyone experienced this? Fix?

Lines are drawn as a specific color and not red.

![1ge7EBlD74](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/2/6/2610f69d88d51977139644a402e9c06a58614531.gif)

---

<div class="post-metadata">

**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [26 October 2021 15:26 UTC](https://discourse.nodered.org/t/world-map-lines/52376/3 "2021-10-26T15:26:56Z")

</div>

Do you have a simple example that shows this that doesn't use a database we don't have access to ?

Off top of head... shouldn't it be `options : {color: colour},` ?

> **[node-red-contrib-web-worldmap](https://flows.nodered.org/node/node-red-contrib-web-worldmap#options)**
>
> A Node-RED node to provide a web page of a world map for plotting things on.

---

<div class="post-metadata">

**Author:** ![ScheepersJohan](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/scheepersjohan/32/39556_2.png) [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Post date:** [27 October 2021 07:30 UTC](https://discourse.nodered.org/t/world-map-lines/52376/4 "2021-10-27T07:30:57Z")

</div>

If I have it correct it is msg.payload.color = colour tried msg.payload.options.color = colour does not work.  
[map.json](https://discourse.nodered.org/uploads/short-url/xofJvv7UiyUZO2NrjHx4ql9qw0H.json) (34.8 KB)

---

<div class="post-metadata">

**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [27 October 2021 08:36 UTC](https://discourse.nodered.org/t/world-map-lines/52376/5 "2021-10-27T08:36:02Z")

</div>

Ah right - each item needs a unique name - you are using the same name for the nodes and links - so the link is picking up the node colour (not set so defaults to dark red) - maybe use `msg.payload.name = "L"+msg._msgid;` or something to make them different from the node names.

---

<div class="post-metadata">

**Author:** ![ScheepersJohan](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/scheepersjohan/32/39556_2.png) [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Post date:** [27 October 2021 08:45 UTC](https://discourse.nodered.org/t/world-map-lines/52376/6 "2021-10-27T08:45:17Z")

</div>

Thanks, Forgot each point, line, icon or what ever drawn on the Worldmap needs a unique name

---

<div class="post-metadata">

**Author:** ![ScheepersJohan](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/scheepersjohan/32/39556_2.png) [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Post date:** [27 October 2021 09:57 UTC](https://discourse.nodered.org/t/world-map-lines/52376/7 "2021-10-27T09:57:49Z")

</div>

And if you want to delete a layer?

Is this the payload? msg1 = {payload : {map: {delete: "link"}}}

---

<div class="post-metadata">

**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [27 October 2021 10:15 UTC](https://discourse.nodered.org/t/world-map-lines/52376/8 "2021-10-27T10:15:04Z")

</div>

no I think `msg.payload = { "command": { "clear": "link" } }`  
map delete just removes the menu item I think... clear empties the layer and removes it.

---

<div class="post-metadata">

**Author:** ![ScheepersJohan](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/scheepersjohan/32/39556_2.png) [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Post date:** [27 October 2021 11:54 UTC](https://discourse.nodered.org/t/world-map-lines/52376/9 "2021-10-27T11:54:48Z")

</div>

Thank you, appreciate your help

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [10 November 2021 11:54 UTC](https://discourse.nodered.org/t/world-map-lines/52376/10 "2021-11-10T11:54:49Z")

</div>

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