[Chartjs]-Combining charting with the map

No need for javascript. Just use this .css styles for the three entities and adjust them as you see fit:

#menu {
    position: absolute;
    top: 0px;
    height: 32px;
    width: 100vw;
}
#map {
    position: absolute;
    float: left;
    top: 32px;
    bottom: 0px;
    width: 60vw;
}
#graph {
    position: absolute;
    width: 40vw;
    left: 60vw;
    top: 32px;
    bottom: 0px;
}