uk.ac.starlink.ttools.plot2.geom

Class AngScale2

java.lang.Object

skyview.data.AngScale

uk.ac.starlink.ttools.plot2.geom.AngScale2

public class AngScale2
extends skyview.data.AngScale

Find an appropriate delta to use for getting grid intervals.

This subclasses the SkyView AngScale class in order to modify its behaviour slightly. The original implementation is copied from the original skyview source.

The changes consist of addding some larger values to the *Bigs[] arrays, so that lower crowding values actually yield more sparse grids. That includes values that correspond to no grid lines at all (180/360 degrees for lat/lon).

Author:

Tom McGlynn, Mark Taylor

Constructor Summary

Constructors

Constructor and Description
AngScale2()

Method Summary

Modifier and Type	Method and Description
double	scale(double delta) Get an appropriate scaling for this coordinate.
double[]	scaling(double min, double max) Get the desired starting values and scaling interval.
void	setSexagesimal(boolean flag) Do we want sexagesimal coordinates?
void	setTime(boolean flag) Do we want coordinates in time?

Methods inherited from class skyview.data.AngScale

main

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AngScale2

public AngScale2()

Method Detail

scale

public double scale(double delta)

Get an appropriate scaling for this coordinate.

Overrides:

scale in class skyview.data.AngScale

Parameters:

delta - The range of the coordinate.

scaling

public double[] scaling(double min,
                        double max)

Get the desired starting values and scaling interval.

Overrides:

scaling in class skyview.data.AngScale

Parameters:

min - The minimum coordinate value.

max - The maximum coordinate value

Returns:

a two element vector giving the starting value and delta to be used. .

setSexagesimal

public void setSexagesimal(boolean flag)

Do we want sexagesimal coordinates?

Overrides:

setSexagesimal in class skyview.data.AngScale

setTime

public void setTime(boolean flag)

Do we want coordinates in time?

Overrides:

setTime in class skyview.data.AngScale