Class LongCoord

java.lang.Object
uk.ac.starlink.ttools.plot2.data.SingleCoord
uk.ac.starlink.ttools.plot2.data.LongCoord
All Implemented Interfaces:
Coord

public class LongCoord extends SingleCoord
Coord implementation for long values.
Since:
30 Nov 2017
Author:
Mark Taylor
  • Constructor Details

    • LongCoord

      public LongCoord(InputMeta meta, boolean isRequired)
      Constructor.
      Parameters:
      meta - input value metadata
      isRequired - true if this coordinate is required for plotting
  • Method Details

    • inputStorage

      public Function<Object[],Number> inputStorage(uk.ac.starlink.table.ValueInfo[] infos, uk.ac.starlink.table.DomainMapper[] dms)
      Description copied from interface: Coord
      Provides a function to turn a quantity in the user view to a plotting view object.

      The supplied infos and domainMappers arrays correspond to (have the same length as) this object's Inputs array, and may influence the return values. However, Coord instances that always behave the same way (for instance whose Input Domains have fixed DomainMappers) are free to ignore these arguments.

      The returned function converts an array of per-input user values to a storable object of the type corresponding to the result of Coord.getStorageType(); the return value of the returned function is never null.

      Parameters:
      infos - per-input array of column input metadata
      dms - per-input array of input value->domain value mappers
      Returns:
      input values to storage object conversion function, or null if such conversions will never be possible
    • readLongCoord

      public long readLongCoord(Tuple tuple, int icol)
      Reads a long value from an appropriate field in a given Tuple.
      Parameters:
      tuple - tuple
      icol - index of field in tuple corresponding to this Coord
      Returns:
      value of long field