Examples of gov.fnal.eag.healpix.PixTools.next_in_line_nest()

gov.fnal.eag.healpix.PixTools.next_in_line_nest()
calculates the pixel that lies on the East side (and the same latitude) as the given NESTED pixel number - ipix @param nside long resolution @param ipix long pixel number @return long next pixel in line @throws IllegalArgumentException


  public void testNext_In_Line_Nest() throws Exception {
    PixTools pt = new PixTools();
    int ipix = 0;
    int nside = 2;
    int ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 23, ipnext, 1e-10);
    ipix = 1;
    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 6, ipnext, 1e-10);

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    int nside = 2;
    int ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 23, ipnext, 1e-10);
    ipix = 1;
    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 6, ipnext, 1e-10);
    ipix = 4;
    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 27, ipnext, 1e-10);

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    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 6, ipnext, 1e-10);
    ipix = 4;
    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 27, ipnext, 1e-10);
    ipix = 27;
    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 8, ipnext, 1e-10);

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    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 27, ipnext, 1e-10);
    ipix = 27;
    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 8, ipnext, 1e-10);
    ipix = 12;
    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 19, ipnext, 1e-10);

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    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 8, ipnext, 1e-10);
    ipix = 12;
    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 19, ipnext, 1e-10);
    ipix = 118;
    nside = 4;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext = " + ipnext, 117, ipnext, 1e-10);

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    nside = 2;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext=" + ipnext, 19, ipnext, 1e-10);
    ipix = 118;
    nside = 4;
    ipnext = (int) pt.next_in_line_nest(nside, ipix);
    assertEquals("ipnext = " + ipnext, 117, ipnext, 1e-10);
    System.out.println(" test next_in_line_nest is done");
  }


  public void testInRing() throws Exception {

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