LandsatETMSlcOffSensor.java

// LandsatETMSlcOffSensor.java defines the Landsat ETM data set for 
// Scan Line Corrector (SLC) off data.
//-----------------------------------------------------------------
import java.awt.Color;
import java.util.Vector;

public class LandsatETMSlcOffSensor extends LandsatSensor
{
    private static int[] resolutions = {1000,240};
    private static final int[] borderX = {-4,4,4,-4};
            // 4 corner highlight X border offsets
    private static final int[] borderY = {-4,-4,4,4};
            // 4 corner highlight Y border offsets

    // Constructor
    LandsatETMSlcOffSensor(imgViewer applet)
    {
        super(applet, "L7 SLC-off (2003->)", "l7slc_off",
              "LANDSAT_ETM_SLC_OFF", "showbrowse.cgi", "showmetadata.cgi",
              "USGS_logo.gif", "http://www.usgs.gov",
              "https://lta.cr.usgs.gov/LETMP",
              "http://landsat.usgs.gov/technical_details/data_acquisition/"+
              "l7_acquisition_calendar.php",
              resolutions,borderX,borderY,Color.YELLOW);

        numQualityValues = 2;
        qualityLimit = 9;
        dataHasGaps = true;

        // the Landsat L1T scenes are downloadable
        isDownloadable = true;
        mightBeDownloadable = true;
        maxScenesPerOrder = 100;

        // set the navigation model to the WRS-2 descending model
        navModel = new WRS2Model();
    }

    // method to return the starting year for the sensor
    //--------------------------------------------------
    public int getStartingYear()
    {
        return 2003;
    }

    // method to return the ending year for the sensor (or -1 if collections
    // continue)
    //----------------------------------------------------------------------
    public int getEndingYear()
    {
        return -1;
    }

    // method to return the estimated size (in bytes) of an image file at the
    // indicated resolution
    //-----------------------------------------------------------------------
    public int getImageFileSize(int resolution)
    {
        if (resolution == 1000)
            return 35000;
        else
            return 120000;
    }

    // method to build the URL for downloading a scene
    //------------------------------------------------
    public String buildDownloadURL(Metadata scene)
    {
        if (isDownloadable)
        {
            Vector id = new Vector();
            id.add(scene.entityID);
            String url = EarthExplorer.buildShoppingCartUrl(
                         "LANDSAT_ETM_SLC_OFF_L1T", id);

            return url;
        }

        // return null if not downloadable
        return null;
    }
}