فشر اشارے اور FMZ پر ڈرائنگ کا جاوا اسکرپٹ زبان کا نفاذ

تجارت کے تکنیکی تجزیے کے دوران ، تاجروں نے اسٹاک کی قیمت کے اعداد و شمار کا تجزیہ اور مطالعہ کیا ہے۔ تاہم ، اسٹاک کی قیمت کے اعداد و شمار کی تقسیم معیاری عام تقسیم کے مطابق نہیں ہے۔Fisher Transformationایک ایسا طریقہ ہے جو قیمت کے اعداد و شمار کو عام تقسیم میں تبدیل کرسکتا ہے۔Fisher Transformationمارکیٹ کے اعداد و شمار کو ہموار کریں اور کچھ تیز چھوٹے دورانیہ اتار چڑھاؤ کو ختم کریں۔ موجودہ دن اور پچھلے دن کے اشارے کا استعمال کرتے ہوئے تجارتی سگنل بھیجے جاسکتے ہیں۔

کے بارے میں بہت سے مواد ہیںFisher TransformBaidu، Zhihu، یہاں ہم دوبارہ نہیں کریں گے.

اشارے کا الگورتھم:

• آج کے وسط قیمت:

  
- Judge the calculation period, which can be 10 days. Calculate the highest and lowest price in the period:

  ```lowestLow = lowest price in the period```，```highestHigh = highest price in the period```.
  
- Define the price change parameter (the ```ratio``` is a constant between 0-1, for example, 0.5 or 0.33):
  
  ![JavaScript language implementation of Fisher indicators and drawing on FMZ](/upload/asset/28d651ee2fee1aec1bd73.jpg) 

- Using the ```Fisher``` transformation on the price change parameter ```x```, the ```Fisher``` indicator is obtained:
  
  ![JavaScript language implementation of Fisher indicators and drawing on FMZ](/upload/asset/28d87a37d48661f503b10.png) 

### Implement the algorithm by using the JavaScript language

It is implemented step by step according to the indicator algorithm. It should be noted that the algorithm is an iterative algorithm. For ```preX``` and ```preFish```, they were set to 0 at the beginning. For ```Math Log``` is to find the logarithm based on the natural constant e. In addition, the above algorithm did not mention the correction of x, which I almost ignored when writing:

Correct the value of x, force it to be 0.999 if it is greater than 0.99. Same for that of less than -0.99.

    if (x > 0.99) {
        x = 0.999
    } else if (x < -0.99) {
        x = -0.999
    }

The first time I saw the algorithm and indicators, I transplanted them according to the algorithm. I have not verified this implementation, and some who are interested in research can verify whether there are any errors. Thank you very much for pointing out the mistakes.

```Fisher Transform``` indicator algorithm source code:
```js
function getHighest(arr, period) {
    if (arr.length == 0 || arr.length - period < 0) {
        return null 
    }
    var beginIndex = arr.length - period
    var ret = arr[beginIndex].High
    for (var i = 0 ; i < arr.length - 1 ; i++) {
        if (arr[i + 1].High > ret) {
            ret = arr[i + 1].High
        }
    }
    return ret
}

function getLowest(arr, period) {
    if (arr.length == 0 || arr.length - period < 0) {
        return null 
    }
    var beginIndex = arr.length - period
    var ret = arr[beginIndex].Low
    for (var i = 0 ; i < arr.length - 1 ; i++) {
        if (arr[i + 1].Low < ret) {
            ret = arr[i + 1].Low
        }
    }
    return ret
}

function calcFisher(records, ratio, period) {
    var preFish = 0 
    var preX = 0
    var arrFish = []
    // When the length of K-line is not enough to meet the period
    if (records.length < period) {
        for (var i = 0 ; i < records.length ; i++) {
            arrFish.push(0)
        }
        return arrFish
    }

    // traverse the K-line
    for (var i = 0 ; i < records.length ; i++) {
        var fish = 0
        var x = 0
        var bar = records[i]
        var mid = (bar.High + bar.Low) / 2
        // When the current BAR is insufficient in period calculation
        if (i < period - 1) {
            fish = 0
            preFish = 0
            arrFish.push(fish)
            continue
        }

        // Calculate the highest and lowest price in the period
        var bars = []
        for (var j = 0 ; j <= i ; j++) {
            bars.push(records[j])
        }
        var lowestLow = getLowest(bars, period)
        var highestHigh = getHighest(bars, period)               
        
        // price change parameters
        x = ratio * 2 * ((mid - lowestLow) / (highestHigh - lowestLow) - 0.5) + (1 - ratio) * preX
        if (x > 0.99) {
            x = 0.999
        } else if (x < -0.99) {
            x = -0.999
        }
        preX = x 
        fish = 0.5 * Math.log((1 + x) / (1 - x)) + 0.5 * preFish
        preFish = fish
        arrFish.push(fish)
    }
    return arrFish
}

ڈرائنگ چارٹ

یہ FMZ، حکمت عملی چوک پر ڈرائنگ کرنے کے لئے آسان ہے:https://www.fmz.com/squareاس پر حوالہ کے لیے بہت سی مثالیں ہیں، آپ انہیں تلاش کر سکتے ہیں۔

var cfg = {    // The object used to initialize chart settings (i.e. chart settings)
    plotOptions: {
        candlestick: {
            color: '#d75442',  // color value
            upColor: '#6ba583' // color value
        }
    },
    title: { text: 'Fisher Transform'},     //title
    subtitle: {text: ''},     //sub-title
    plotOptions: {
        candlestick: {
        tooltip: {
            pointFormat: 
            '<span style="color:{point.color}">\u25CF</span> <b> {series.name}</b><br/>' +
            'opening quotation: {point.open}<br/>' +
            'the highest: {point.high}<br/>' +
            'the lowest: {point.low}<br/>' +
            'closing quotation: {point.close}<br/>'
            }
        }
    },
    yAxis: [{
        title: {
            text: 'K-line market'
        },
        height: '70%',
        lineWidth: 1
    }, {
        title: {
            text: 'Fisher Transform'
        },
        top: '75%',
        height: '30%',
        offset: 0,
        lineWidth: 1
    }],
    series: [//series
        {
            type: 'candlestick',
            yAxis: 0,
            name: 'K-line',
            id: 'KLine',
            // Control the candle color with downward trend
            color: 'green',
            lineColor: 'green',
            // Control the candle color with upward trend
            upColor: 'red',
            upLineColor: 'red',
            data: []
        },{
            type: 'line',         // Set the current data series type as line
            yAxis: 1,             // The y-axis used as the y-axis with the index of 0 (a highcharts chart can have multiple y-axes, and the y-axis with the index of 0 is specified here)
            showInLegend: true,   // 
            name: 'fish',          // Set it according to the parameter label passed in by the function
            lineWidth: 1,
            data: [],             // Data items of data series
            tooltip: {            // Tooltip
                valueDecimals: 2  // The decimal point of the value is reserved for 5 digits
            }
        },{
            type: 'line',         // Set the current data series type as line
            yAxis: 1,             // The y-axis used as the y-axis with the index of 0 (a highcharts chart can have multiple y-axes, and the y-axis with the index of 0 is specified here)
            showInLegend: true,   // 
            name: 'preFish',      // Set it according to the parameter label passed in by the function
            lineWidth: 1,
            data: [],             // Data items of data series
            tooltip: {            // Tooltip
                valueDecimals: 2  // The decimal point of the value is reserved for 5 digits
            }
        }
    ]
}

var chart = Chart(cfg)
function main() {
    var ts = 0
    chart.reset()
    while (true) {
        var r = exchange.GetRecords()
        var fisher = calcFisher(r, 0.33, 10)                
        if (!r || !fisher) {
            Sleep(500)
            continue
        }
        
        for (var i = 0; i < r.length; i++){
            if (ts == r[i].Time) {
                chart.add([0,[r[i].Time, r[i].Open, r[i].High, r[i].Low, r[i].Close], -1])
                chart.add([1,[r[i].Time, fisher[i]], -1])
                if (i - 1 >= 0) {
                    chart.add([2,[r[i].Time, fisher[i - 1]], -1])
                }
            }else if (ts < r[i].Time) {
                chart.add([0,[r[i].Time, r[i].Open, r[i].High, r[i].Low, r[i].Close]])
                chart.add([1,[r[i].Time, fisher[i]]])
                if (i - 1 >= 0) {
                    chart.add([2,[r[i].Time, fisher[i - 1]]])
                }
                ts = r[i].Time
            }
        }
    }
}

تو یہ FMZ پر ڈیٹا، ڈسپلے چارٹ اور ڈیزائن کی حکمت عملی کا مطالعہ کرنے کے لئے بہت آسان ہے. یہاں ہم نے صرف ایک مثال دکھائی ہے، آپ سب کو ایک پیغام چھوڑنے کے لئے خوش آمدید ہیں.