Retrieve chart pattern studies example missing #220

mac2000 · 2023-10-26T07:08:22Z

By chart patterns I mean this ones:

Restriction:

they are available only for paid plans
TradingView.searchIndicator somehow does not find them
from ws messages on trading view it seems that identifiers are something like BearishFlagCP@tv-chart_patterns-26 but attempt to retrieve it fails with error that indicator is undefined
also from indicator search in inspector I see that its data id attribute is BearishFlagCP@tv-chart_patterns

How I tried to retrieve it:

import TradingView from '@mathieuc/tradingview';

var username = 'hello'
var password = 'world'

var user = await TradingView.loginUser(username, password, false)

var client = new TradingView.Client({
  signature: user.signature,
  token: user.token,
});
var chart = new client.Session.Chart();
chart.setMarket('NYSE:VOO');

var indicator = await TradingView.getIndicator('BearishFlagCP@tv-chart_patterns')

var study = new chart.Study(indicator)
console.log(`Retrieving ${indicator.description}`)
study.onUpdate(() => {
  console.log(`Retrieved ${indicator.description}`)
  console.log(study.periods)
})

Notes:

chart patterns are not usual pine scripts, not sure if thats relates at all because after end it is still study that is just being rendered

indicator is searchable even in anonymous session from web site, it just not works for non paid accounts

Wondering if I am missing something, willing to create one more example while have paid subscription, because I bed I am not a first one and not last one who is struggling with this

The text was updated successfully, but these errors were encountered:

mac2000 · 2023-10-26T08:05:34Z

Here is a dump of ws messages with single study

create_study

raw

~m~689~m~{"m":"create_study","p":["cs_J9dHOapfH83N","st11","st1","sds_1","HeadAndShouldersCP@tv-chart_patterns-26",{"Source":"ohlc4","Patterns":"All","Price Targets":"All","Trend Height":50,"Minimum required difference":20,"Maximum slope of the neck line":15,"Shoulders height maximum difference":30,"Shoulders width maximum difference":60,"In Progress":true,"Color Graph":"rgba(156, 39, 176, 1)","Line Style":"Solid","Width Graph":2,"Color Extend Line":"rgba(156, 39, 176, 1)","Neck Line Style":"Dotted","Width Neck Line":2,"Background":true,"Background color":"rgba(156, 39, 176, 0.15)","Labels":true,"Label Background color":"rgba(156, 39, 176, 1)","Label Text color":"rgba(255, 255, 255, 1)"}]}

json

{
  "m": "create_study",
  "p": [
    "cs_J9dHOapfH83N",
    "st11",
    "st1",
    "sds_1",
    "HeadAndShouldersCP@tv-chart_patterns-26",
    {
      "Source": "ohlc4",
      "Patterns": "All",
      "Price Targets": "All",
      "Trend Height": 50,
      "Minimum required difference": 20,
      "Maximum slope of the neck line": 15,
      "Shoulders height maximum difference": 30,
      "Shoulders width maximum difference": 60,
      "In Progress": true,
      "Color Graph": "rgba(156, 39, 176, 1)",
      "Line Style": "Solid",
      "Width Graph": 2,
      "Color Extend Line": "rgba(156, 39, 176, 1)",
      "Neck Line Style": "Dotted",
      "Width Neck Line": 2,
      "Background": true,
      "Background color": "rgba(156, 39, 176, 0.15)",
      "Labels": true,
      "Label Background color": "rgba(156, 39, 176, 1)",
      "Label Text color": "rgba(255, 255, 255, 1)"
    }
  ]
}

study_loading

raw

~m~97~m~{"m":"study_loading","p":["cs_J9dHOapfH83N","st11","s5_st1"],"t":1698306758,"t_ms":1698306758285}

json

{
  "m": "study_loading",
  "p": ["cs_J9dHOapfH83N", "st11", "s5_st1"],
  "t": 1698306758,
  "t_ms": 1698306758285
}

du, study_completed

raw

~m~3065~m~{"m":"du","p":["cs_J9dHOapfH83N",{"st11":{"node":"ams1-32-studies-charts-pro-2-runner-2","st":[{"i":299,"v":[1698240600.0,0.0,0.0]}],"ns":{"d":"{\"graphicsCmds\":{\"create\":{\"dwglabels\":[{\"data\":[{\"id\":8,\"x\":2,\"y\":221.42,\"yl\":\"ab\",\"t\":\"Left Shoulder\",\"st\":\"lcn\",\"ci\":4.289734556E9,\"tci\":4.294967295E9,\"sz\":\"normal\",\"ta\":\"center\",\"tt\":\"\"},{\"id\":9,\"x\":4,\"y\":228.965,\"yl\":\"ab\",\"t\":\"Head\",\"st\":\"lcn\",\"ci\":4.289734556E9,\"tci\":4.294967295E9,\"sz\":\"normal\",\"ta\":\"center\",\"tt\":\"\"},{\"id\":10,\"x\":6,\"y\":225.78,\"yl\":\"ab\",\"t\":\"Right Shoulder\",\"st\":\"lcn\",\"ci\":4.289734556E9,\"tci\":4.294967295E9,\"sz\":\"normal\",\"ta\":\"center\",\"tt\":\"\"},{\"id\":22,\"x\":8,\"y\":201.26,\"yl\":\"pr\",\"t\":\"Target\",\"st\":\"luprg\",\"ci\":4.289734556E9,\"tci\":4.294967295E9,\"sz\":\"normal\",\"ta\":\"center\",\"tt\":\"Head And Shoulders\\nPrice: 201.26\\nStatus: Awaiting\"}],\"styleId\":\"labels\"}],\"dwglinefills\":[{\"data\":[{\"id\":13,\"line1\":11,\"line2\":12,\"ci\":6.49078684E8},{\"id\":16,\"line1\":14,\"line2\":15,\"ci\":6.49078684E8},{\"id\":19,\"line1\":17,\"line2\":18,\"ci\":6.49078684E8}],\"styleId\":\"lineFills\"}],\"dwglines\":[{\"data\":[{\"id\":1,\"x1\":0,\"y1\":200.2,\"x2\":2,\"y2\":221.42,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":2,\"x1\":2,\"y1\":221.42,\"x2\":3,\"y2\":214.14,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":3,\"x1\":3,\"y1\":214.14,\"x2\":4,\"y2\":228.965,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":4,\"x1\":4,\"y1\":228.965,\"x2\":5,\"y2\":215.03,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":5,\"x1\":5,\"y1\":215.03,\"x2\":6,\"y2\":225.78,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":6,\"x1\":6,\"y1\":225.78,\"x2\":7,\"y2\":215.57,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":7,\"x1\":7,\"y1\":215.56872231260166,\"x2\":1,\"y2\":213.7695757124901,\"ex\":\"n\",\"st\":\"dot\",\"ci\":4.289734556E9,\"w\":2},{\"id\":11,\"x1\":1,\"y1\":213.7695757124901,\"x2\":2,\"y2\":221.42,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":12,\"x1\":3,\"y1\":214.14,\"x2\":2,\"y2\":221.42,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":14,\"x1\":3,\"y1\":214.14,\"x2\":4,\"y2\":228.965,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":15,\"x1\":5,\"y1\":215.03,\"x2\":4,\"y2\":228.965,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":17,\"x1\":5,\"y1\":215.03,\"x2\":6,\"y2\":225.78,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":18,\"x1\":7,\"y1\":215.56872231260166,\"x2\":6,\"y2\":225.78,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":20,\"x1\":7,\"y1\":215.57,\"x2\":7,\"y2\":201.26,\"ex\":\"n\",\"st\":\"dot\",\"ci\":4.289734556E9,\"w\":2},{\"id\":21,\"x1\":7,\"y1\":201.26,\"x2\":8,\"y2\":201.26,\"ex\":\"n\",\"st\":\"dot\",\"ci\":4.289734556E9,\"w\":2}],\"styleId\":\"lines\"}]},\"erase\":[{\"action\":\"all\"}]}}","indexes":[179,199,209,214,236,252,262,275,300]},"t":"s5_st1"}}]}~m~99~m~{"m":"study_completed","p":["cs_J9dHOapfH83N","st11","s5_st1"],"t":1698306758,"t_ms":1698306758379}

json

[
  {
    "m": "du",
    "p": [
      "cs_J9dHOapfH83N",
      {
        "st11": {
          "node": "ams1-32-studies-charts-pro-2-runner-2",
          "st": [{ "i": 299, "v": [1698240600.0, 0.0, 0.0] }],
          "ns": {
            "d": "{\"graphicsCmds\":{\"create\":{\"dwglabels\":[{\"data\":[{\"id\":8,\"x\":2,\"y\":221.42,\"yl\":\"ab\",\"t\":\"Left Shoulder\",\"st\":\"lcn\",\"ci\":4.289734556E9,\"tci\":4.294967295E9,\"sz\":\"normal\",\"ta\":\"center\",\"tt\":\"\"},{\"id\":9,\"x\":4,\"y\":228.965,\"yl\":\"ab\",\"t\":\"Head\",\"st\":\"lcn\",\"ci\":4.289734556E9,\"tci\":4.294967295E9,\"sz\":\"normal\",\"ta\":\"center\",\"tt\":\"\"},{\"id\":10,\"x\":6,\"y\":225.78,\"yl\":\"ab\",\"t\":\"Right Shoulder\",\"st\":\"lcn\",\"ci\":4.289734556E9,\"tci\":4.294967295E9,\"sz\":\"normal\",\"ta\":\"center\",\"tt\":\"\"},{\"id\":22,\"x\":8,\"y\":201.26,\"yl\":\"pr\",\"t\":\"Target\",\"st\":\"luprg\",\"ci\":4.289734556E9,\"tci\":4.294967295E9,\"sz\":\"normal\",\"ta\":\"center\",\"tt\":\"Head And Shoulders\\nPrice: 201.26\\nStatus: Awaiting\"}],\"styleId\":\"labels\"}],\"dwglinefills\":[{\"data\":[{\"id\":13,\"line1\":11,\"line2\":12,\"ci\":6.49078684E8},{\"id\":16,\"line1\":14,\"line2\":15,\"ci\":6.49078684E8},{\"id\":19,\"line1\":17,\"line2\":18,\"ci\":6.49078684E8}],\"styleId\":\"lineFills\"}],\"dwglines\":[{\"data\":[{\"id\":1,\"x1\":0,\"y1\":200.2,\"x2\":2,\"y2\":221.42,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":2,\"x1\":2,\"y1\":221.42,\"x2\":3,\"y2\":214.14,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":3,\"x1\":3,\"y1\":214.14,\"x2\":4,\"y2\":228.965,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":4,\"x1\":4,\"y1\":228.965,\"x2\":5,\"y2\":215.03,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":5,\"x1\":5,\"y1\":215.03,\"x2\":6,\"y2\":225.78,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":6,\"x1\":6,\"y1\":225.78,\"x2\":7,\"y2\":215.57,\"ex\":\"n\",\"st\":\"sol\",\"ci\":4.289734556E9,\"w\":2},{\"id\":7,\"x1\":7,\"y1\":215.56872231260166,\"x2\":1,\"y2\":213.7695757124901,\"ex\":\"n\",\"st\":\"dot\",\"ci\":4.289734556E9,\"w\":2},{\"id\":11,\"x1\":1,\"y1\":213.7695757124901,\"x2\":2,\"y2\":221.42,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":12,\"x1\":3,\"y1\":214.14,\"x2\":2,\"y2\":221.42,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":14,\"x1\":3,\"y1\":214.14,\"x2\":4,\"y2\":228.965,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":15,\"x1\":5,\"y1\":215.03,\"x2\":4,\"y2\":228.965,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":17,\"x1\":5,\"y1\":215.03,\"x2\":6,\"y2\":225.78,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":18,\"x1\":7,\"y1\":215.56872231260166,\"x2\":6,\"y2\":225.78,\"ex\":\"n\",\"st\":\"sol\",\"ci\":0.0,\"w\":2},{\"id\":20,\"x1\":7,\"y1\":215.57,\"x2\":7,\"y2\":201.26,\"ex\":\"n\",\"st\":\"dot\",\"ci\":4.289734556E9,\"w\":2},{\"id\":21,\"x1\":7,\"y1\":201.26,\"x2\":8,\"y2\":201.26,\"ex\":\"n\",\"st\":\"dot\",\"ci\":4.289734556E9,\"w\":2}],\"styleId\":\"lines\"}]},\"erase\":[{\"action\":\"all\"}]}}",
            "indexes": [179, 199, 209, 214, 236, 252, 262, 275, 300]
          },
          "t": "s5_st1"
        }
      }
    ]
  },
  {
    "m": "study_completed",
    "p": ["cs_J9dHOapfH83N", "st11", "s5_st1"],
    "t": 1698306758,
    "t_ms": 1698306758379
  }
]

mac2000 · 2023-10-26T08:29:12Z

Tried to debug whats being called on tv

I see that whenever we are adding some well known indicator _createStudyOnServer is being called

and from its properties we can retrieve indicator id like so: this._inputs.pineId so for macd we have STD;MACD

but for this patterns there is no such property 🤷‍♂️

just for future reference here are identifiers of head and shoulders I have catched

_id: "c390ZF"
_instanceId: "9FU3Bh"
_studyId: "st13"
_studyName: "HeadAndShouldersCP@tv-chart_patterns-26"

From what I understand to get this we need low level call passing this identifiers rather than pineId

mac2000 · 2023-10-26T08:45:30Z

Further check agains volume indicator, from what I understand from sources we should use built in indicator rahter than pine indicator. There are some predefined default for well know indicators here

While in debug did tried to add indicator and check what I have in object

_studyName: "Volume@tv-basicstudies-226"

almost same as in defaults, so I do believe thats a starting point

inputs are

{
    "length": 20,
    "col_prev_close": false
}

and here is what we have in defaults for build in indicators

const defaultValues = {
  'Volume@tv-basicstudies-144': {
    length: 20,
    col_prev_close: false,
  },

constructor of indicator takes name so in case of volume it will be Volume@tv-basicstudies-144

in case of head and shoulders

name: HeadAndShouldersCP@tv-chart_patterns-26
inputs:

{
    "Source": "ohlc4",
    "Patterns": "All",
    "Price Targets": "All",
    "Trend Height": 50,
    "Minimum required difference": 20,
    "Maximum slope of the neck line": 15,
    "Shoulders height maximum difference": 30,
    "Shoulders width maximum difference": 60,
    "In Progress": true,
    "Color Graph": "rgba(156, 39, 176, 1)",
    "Line Style": "Solid",
    "Width Graph": 2,
    "Color Extend Line": "rgba(156, 39, 176, 1)",
    "Neck Line Style": "Dotted",
    "Width Neck Line": 2,
    "Background": true,
    "Background color": "rgba(156, 39, 176, 0.15)",
    "Labels": true,
    "Label Background color": "rgba(156, 39, 176, 1)",
    "Label Text color": "rgba(255, 255, 255, 1)"
}

so now the question is how to instantiate it and pass to the chart

mac2000 · 2023-10-26T10:23:55Z

heh, so i have ended up facing #202 so far the attempt is:

import TradingView from '@mathieuc/tradingview';

var indicator = new TradingView.BuiltInIndicator('HeadAndShouldersCP@tv-chart_patterns-26');

var client = new TradingView.Client({
  token: '*********' // "sessionId" cookie,
});
var chart = new client.Session.Chart();
chart.setMarket('AMEX:VTI', { timeframe: 'D', range: 252 });

// indicator.setOption('first_bar_time', Date.now() - 10 ** 8); // aka example of how to set options

var study = new chart.Study(indicator)
console.log(`Retrieving ${indicator.description}`)
study.onUpdate(() => {
  console.log(`Retrieved ${indicator.description}`)
  console.log(study.periods)
  console.log(study.graphic)
})

going to check:

if we can login via pupeteer like tools
if we can listen for socket events

technically issue may be closed, because it seems that I was mistaken and technically example of how to use buildin indicators is present

mac2000 added the enhancement New feature or request label Oct 26, 2023

mac2000 assigned Mathieu2301 Oct 26, 2023

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Retrieve chart pattern studies example missing #220

Retrieve chart pattern studies example missing #220

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mac2000 commented Oct 26, 2023

Retrieve chart pattern studies example missing #220

Retrieve chart pattern studies example missing #220

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