plot_views = new plotView[mappers.length];
zone_views = new zoneView[mappers.length];
for (int i=0;i<mappers.length;i++){
SpeedManagerPingMapper mapper = mappers[i];
TabItem plot_item = new TabItem(folder, SWT.NULL);
plot_item.setText( "Plot " + mapper.getName());
Canvas plotCanvas = new Canvas(folder,SWT.NO_BACKGROUND);
gridData = new GridData(GridData.FILL_BOTH);
plotCanvas.setLayoutData(gridData);
plot_views[i] = new plotView( mapper, plotCanvas, labels, formatters );
plot_item.setControl( plotCanvas );
TabItem zones_item = new TabItem(folder, SWT.NULL);
zones_item.setText( "Zones " + mapper.getName() );
Canvas zoneCanvas = new Canvas(folder,SWT.NO_BACKGROUND);
gridData = new GridData(GridData.FILL_BOTH);
zoneCanvas.setLayoutData(gridData);