Class JxnUVGrid

java.lang.Object

JxnUVGrid

public class JxnUVGrid
extends Object

Defines methods to visualize functions x(u,v) and y(u,v) by mapping a grid in the u/v-plain into the x/y-plain.

Usage:

   uv = @JxnUVGrid( uStart, uStep, nuStep, vStart, vStep, nvStep, ni )
   u = uv.u()
   v = uv.v()
   x = fx( u, v )  ! replace this line with expression calculating x from u and v 
   y = fy( u, v )  ! replace this line with expression calculating y from u and v 
   plot( x, y )
 

with
- uStep: mesh width in u-direction, nuSteps: number of meshes
- vStep: mesh width in v-direction, nvSteps: number of meshes
- ni: number of data points per mesh:
ni=1 data point only in the mesh nodes
for ni < 0 the starting point (uStart, vStart) and the u-direction is marked by additional lines

Example: nuSteps = 3, nvSteps = 2, ni = -2 ( + : data point )

                 +---+---+---+---+---+---+
                 |       |       |       |
                 +       +       +       +
                 |       |       |       |
 vStart+vStep -> +---+---+---+---+---+---+
                 |  >    |       |       |
                 +     > +       +       +
                 |  >    |       |       |
          vStart +---+---+---+---+---+---+
              uStart     |            u ->
                   uStart+uStep
 

Field Summary

Fields

Modifier and Type	Field	Description
double[]	uValue	Internal storage.
double[]	vValue	Internal storage.

Constructor Summary

Constructors

Constructor	Description
JxnUVGrid(double uStart, double uEnd, double uStep, double vStart, double vEnd, double vStep)	Creates a grid defined by starting point, end point and mesh width.
JxnUVGrid(double uStart, double uEnd, double uStep, double vStart, double vEnd, double vStep, int ni)	See JxnUVGrid.
JxnUVGrid(double uStart, double uStep, int nuStep, double vStart, double vStep, int nvStep)	Creates a grid defined by starting point, mesh width and number of meshes.
JxnUVGrid(double uStart, double uStep, int nuStep, double vStart, double vStep, int nvStep, int ni)	See JxnUVGrid.

Method Summary

Modifier and Type	Method	Description
JxnRealArrayAlgebra	u()	Returns the u-values of the grid.
JxnRealArrayAlgebra	v()	Returns the v-values of the grid.

Methods inherited from class java.lang.Object

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

Field Detail

uValue

public double[] uValue

Internal storage.

vValue

public double[] vValue

Internal storage.

Constructor Detail

JxnUVGrid

public JxnUVGrid(double uStart,
                 double uStep,
                 int nuStep,
                 double vStart,
                 double vStep,
                 int nvStep)

Creates a grid defined by starting point, mesh width and number of meshes.

JxnUVGrid

public JxnUVGrid(double uStart,
                 double uStep,
                 int nuStep,
                 double vStart,
                 double vStep,
                 int nvStep,
                 int ni)

See JxnUVGrid.

Parameters:

ni - number of data points per mesh

JxnUVGrid

public JxnUVGrid(double uStart,
                 double uEnd,
                 double uStep,
                 double vStart,
                 double vEnd,
                 double vStep)

Creates a grid defined by starting point, end point and mesh width.

JxnUVGrid

public JxnUVGrid(double uStart,
                 double uEnd,
                 double uStep,
                 double vStart,
                 double vEnd,
                 double vStep,
                 int ni)

See JxnUVGrid.

Parameters:

ni - number of data points per mesh

Method Detail

u

public JxnRealArrayAlgebra u()

Returns the u-values of the grid.

v

public JxnRealArrayAlgebra v()

Returns the v-values of the grid.