Clean data chart

There is a function by which a chart is built for a certain pair of currencies, and when switching this pair, in theory I need to clear the chart and load new data into it. If I add the line chart.removeSeries (lineSeries); then the chart is always empty, what’s the problem?

function cd(){
    const lineSeries = chart.addLineSeries();
    let data_chart = [];
  //  chart.removeSeries(lineSeries);
    if (typeof(Data_for_chart[CoinVal]) != "undefined"){
        if (typeof(Data_for_chart[CoinVal][CoinProd]) != "undefined"){
            if ((typeof(Data_for_chart[CoinVal][CoinProd]['Price']) != "undefined")&&(typeof(Data_for_chart[CoinVal][CoinProd]['Time']) != "undefined")){
                console.log(Data_for_chart[CoinVal][CoinProd]['Price'])
                for(var i = 0; i < Data_for_chart[CoinVal][CoinProd]['Price'].length; i++){
                    data_chart.push({time:Data_for_chart[CoinVal][CoinProd]['Time'][i], value:Data_for_chart[CoinVal][CoinProd]['Price'][i]});
                }
                lineSeries.setData(data_chart);
            }
        }
    }
}

[PandaSobao]

Believe @johnworthley is looking for update()

[nikitamarcius]

@timocov sure. While I have such a solution. When a trading pair changes, the OHLC data is rebuilt, while the chart remains in the same coordinates along X and Y. It is possible to align the graph only horizontally chart.timeScale().resetTimeScale(), but not vertically, I do not know this possibility.