Method Detail

• getChannelCount

  int getChannelCount()

  Returns the number of channels if known.

  Returns:

  number of channels in this grid, or -1 if not known

• getChannelRange

  int[] getChannelRange(double ylo,
                        double yhi)

  Returns the range of channel indices which are completely or partially covered in a given range of Y (spectral) values.

  Parameters:

  ylo - lower bound of Y value

  yhi - upper bound of Y value

  Returns:

  2-element array giving (lower, upper+1) index of channels visible in the given Y range

• getChannelBounds

  void getChannelBounds(int ichan,
                        double[] ybounds)

  Reports the upper and lower Y (spectral) bounds for a given channel.

  Parameters:

  ichan - channel index

  ybounds - 2-element array, on return contains (lower,upper) bounds of channel on the Y (spectral) axis