import java.awt.*;
import javax.swing.*;
-import org.altusmetrum.altoslib_1.*;
+import org.altusmetrum.altoslib_3.*;
import org.jfree.ui.*;
import org.jfree.chart.*;
boolean enabled;
int fetch;
Color color;
-
+
private void remove_markers() {
for (ValueMarker marker : markers)
plot.removeDomainMarker(marker);