public class CartesianPointStore extends Object implements PointStore
ValueStore
is used to back the storage.
The error points returned by getErrors(int)
are an array with
two elements (N-d coordinate arrays) for each non-blank element
of the ErrorMode array. Each pair is a lower bound followed by an
upper bound along that dimension.
Constructor and Description |
---|
CartesianPointStore(int ndim,
uk.ac.starlink.ttools.plot.ErrorMode[] errorModes,
int npoint)
Constructor.
|
Modifier and Type | Method and Description |
---|---|
static double |
doubleValue(Object value)
Utility method to convert an object into a numeric (double) value
where possible.
|
int |
getCount()
Returns the number of points in this dataset.
|
double[][] |
getErrors(int ipoint)
Reads the errors for one of the stored points.
|
String |
getLabel(int ipoint)
Returns a string associated with a given point.
|
int |
getNdim()
Returns the length of the coordinate array for each point.
|
int |
getNerror()
Returns the number of error points returned for each point.
|
double[] |
getPoint(int ipoint)
Reads the coordinates of one of the stored points.
|
boolean |
hasLabels()
Indicates whether a string label is associated with some points.
|
void |
storePoint(Object[] coordRow,
Object[] errorRow,
String label)
Stores the next point in sequence to this object.
|
public CartesianPointStore(int ndim, uk.ac.starlink.ttools.plot.ErrorMode[] errorModes, int npoint)
ndim
- coordinate dimensionalityerrorModes
- error mode arraynpoint
- number of times storePoint(java.lang.Object[], java.lang.Object[], java.lang.String)
will be called.public void storePoint(Object[] coordRow, Object[] errorRow, String label)
PointStore
Points.getNdim()
and Points.getNerror()
methods, since there may be some translation between the arrays.
The PointSelection
submits rows here as retrieved
directly from the AxesSelector AxesSelector.getData()
and
AxesSelector.getErrorData()
tables.
storePoint
in interface PointStore
coordRow
- array of objects representing coordinate valueserrorRow
- array of objects representing error valueslabel
- string labelling the pointpublic int getCount()
Points
public int getNdim()
Points
public double[] getPoint(int ipoint)
Points
public int getNerror()
Points
public double[][] getErrors(int ipoint)
Points
nerror
double[] arrays,
each of which has ndim
elements and represents the
coordinates of the end of an error bar. If any of these
coordinate arrays is null
, it represents an error
bar of zero size, that is one whose end sits right on the data point.
The ordering of these points is up to the user of this object,
but typically they will be in pairs, e.g. (xlo,xhi, ylo,hi, ...).
The content of the returned double[][] array and of its elements
may be modified by subsequent calls to this method. The caller is
also permitted to modify these.public boolean hasLabels()
Points
hasLabels
in interface Points
Points.getLabel(int)
may return a non-null value for
any pointpublic String getLabel(int ipoint)
Points
Points.hasLabels()
returns true.public static double doubleValue(Object value)
value
- value to decodeCopyright © 2003-2025 CCLRC: Council for the Central Laboratory of the Research Councils. All Rights Reserved.