factexplorer.py 文件源码

def update(attr, old, new):
    new_data = get_ts_data()
    new_columns = new_data.columns.tolist()
    new_data.columns = [str(r) for r in list(range(0,len(new_columns)))]
    empty_nr = 8 - len(new_columns)

    new_legends = []
    for j, new_col in enumerate(new_data.columns):
        new_source = ColumnDataSource(dict(x=new_data[new_col].index,
                                           y=new_data[new_col].values))
        rend = fig.renderers[4:-1][j]
        rend.data_source.data=new_source.data
        new_legends.append((str(new_columns[j]), [rend]))
    fig.legend[0].update(legends=new_legends)
    for j in range(empty_nr-1, 8):
        new_source = ColumnDataSource(dict(x=[],
                                           y=[]))
        rend = fig.renderers[4:-1][j]
        rend.data_source.data=new_source.data