Cannot remove the legend even after removing the graph

[debsush]

Hi,

Suppose I have a data on 5 stocks in amStockChart. The first stock data is in dataSets[0] and the remaining 4 stocks to be compared are in dataSets[1]
I want to allow the users to remove any of the 4 comparing stocks. Based on users choice of stock to be removed, a script re-runs the data and removes a particular stock of user's choice from the 4-stock data and then passes this new data of 3 stocks (called NewData) and the graph ID of the graph to be removed to a JavaScript function.

JavaScript Function does the following:

  chart.dataSets[1].dataProvider= NewData;
  chart.validateData();

    for (i = 0; i < chart.panels[0].graphs.length; i++) {
        if (chart.panels[0].graphs[i].id == GraphID) {
           chart.panels[0].graphs.splice(i, 1);
           chart.panels[0].graphs.splice(i+1, 1);
        }
    }

          //var graph = chart.panels[0].getGraphById(GraphID);
          //chart.panels[0].removeGraph(graph);
          //graph1 = chart.panels[0].getGraphById('comparedGraph_'+GraphID+'_ds2');
          //chart.panels[0].removeGraph(graph1);

The problem with the above is that the graph gets removed but the legend remains. Please see screenshot below:

Please let me know where am I going wrong

[martynasma]

Wouldn't it be more efficient to define several data sets instead and switch between them instead of updating the actual data?

[debsush]

Hi,

In general yes, your suggestion is apt and very useful. In my particular case, the project requires the different approach. I am using the below now and it is working fine

var graphcnt = chart.panels[0].graphs.length;
for (i = 0; i < graphcnt; i++) {
if (chart.panels[0].graphs[i].id == params[3]) {
var graph = chart.panels[0].graphs[i];
chart.panels[0].removeStockGraph(graph);
var graph = chart.panels[0].graphs[i+1]; //this is to remove the compare graph
chart.panels[0].removeStockGraph(graph);
}
chart.dataSets[1].dataProvider= NewData;
chart.validateData();

Please let me know in case I am not following the best practices.

Regards,
SD