* Display the plot coordinates for this point
* @param x X coordinate location wrt diagram frame
* @param y Y coordinate location wrt diagram frame
*/
protected void displayCrossLocation(int x, int y){
DiagramParameters param = selection.getElementContainer().getComponent().getParameters();
double selX=(x/param.scale)-param.xmargin;
double selY=(y/param.scale)-param.ymargin;
Plot p=plot1;
if(p==null){
p=getSelectedPlot(selX,selY);