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java.lang.Objectucar.unidata.geoloc.ProjectionImpl
ucar.unidata.geoloc.projection.AlbersEqualArea
public class AlbersEqualArea
Albers Equal Area Conic Projection, one or two standard parallels, spherical earth. See John Snyder, Map Projections used by the USGS, Bulletin 1532, 2nd edition (1983), p 98
Projection
,
ProjectionImpl
,
Serialized FormField Summary |
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Fields inherited from class ucar.unidata.geoloc.ProjectionImpl |
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ATTR_NAME, EARTH_RADIUS, INDEX_LAT, INDEX_LON, INDEX_X, INDEX_Y, PI, PI_OVER_2, PI_OVER_4 |
Constructor Summary | |
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AlbersEqualArea()
Constructor with default parameters |
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AlbersEqualArea(double lat0,
double lon0,
double par1,
double par2)
Construct a AlbersEqualArea Projection, two standard parellels. |
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AlbersEqualArea(double lat0,
double lon0,
double par1,
double par2,
double falseEasting,
double falseNorthing)
Construct a AlbersEqualArea Projection, two standard parellels. |
Method Summary | |
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java.lang.Object |
clone()
Clone this projection. |
ProjectionImpl |
constructCopy()
copy constructor - avoid clone !! |
boolean |
crossSeam(ProjectionPoint pt1,
ProjectionPoint pt2)
This returns true when the line between pt1 and pt2 crosses the seam. |
boolean |
equals(java.lang.Object proj)
Check for equality with the Object in question |
double |
getFalseEasting()
Get the false easting, in km. |
double |
getFalseNorthing()
Get the false northing, in km. |
double |
getOriginLat()
Get the origin latitude. |
double |
getOriginLon()
Get the origin longitude. |
double |
getParallelOne()
Get the first standard parallel |
double |
getParallelTwo()
Get the second standard parallel |
java.lang.String |
getProjectionTypeLabel()
Get the label to be used in the gui for this type of projection |
double |
getScale(double lat)
Get the scale for the lat. |
double[][] |
latLonToProj(double[][] from,
double[][] to,
int latIndex,
int lonIndex)
Convert lat/lon coordinates to projection coordinates. |
float[][] |
latLonToProj(float[][] from,
float[][] to,
int latIndex,
int lonIndex)
Convert lat/lon coordinates to projection coordinates. |
ProjectionPoint |
latLonToProj(LatLonPoint latLon,
ProjectionPointImpl result)
Convert a LatLonPoint to projection coordinates |
static void |
main(java.lang.String[] args)
Test |
java.lang.String |
paramsToString()
Create a String of the parameters. |
double[][] |
projToLatLon(double[][] from,
double[][] to)
Convert lat/lon coordinates to projection coordinates. |
float[][] |
projToLatLon(float[][] from,
float[][] to)
Convert lat/lon coordinates to projection coordinates. |
LatLonPoint |
projToLatLon(ProjectionPoint world,
LatLonPointImpl result)
Convert projection coordinates to a LatLonPoint Note: a new object is not created on each call for the return value. |
void |
setFalseEasting(double falseEasting)
Set the false_easting, in km. |
void |
setFalseNorthing(double falseNorthing)
Set the false northing, in km. |
void |
setOriginLat(double lat)
Set the origin latitude. |
void |
setOriginLon(double lon)
Set the origin longitude. |
void |
setParallelOne(double par)
Set the first standard parallel |
void |
setParallelTwo(double par)
Set the second standard parallel |
Methods inherited from class ucar.unidata.geoloc.ProjectionImpl |
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getClassName, getDefaultMapArea, getDefaultMapAreaLL, getHeader, getLatLonBoundingBox, getName, getProjectionParameters, isLatLon, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProjBB, projToLatLon, projToLatLon, projToLatLon, projToLatLon, projToLatLonBB, setDefaultMapArea, setName, toString |
Methods inherited from class java.lang.Object |
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getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public AlbersEqualArea()
public AlbersEqualArea(double lat0, double lon0, double par1, double par2)
lat0
- lat origin of the coord. system on the projection planelon0
- lon origin of the coord. system on the projection planepar1
- standard parallel 1par2
- standard parallel 2
java.lang.IllegalArgumentException
- if lat0, par1, par2 = +/-90 degpublic AlbersEqualArea(double lat0, double lon0, double par1, double par2, double falseEasting, double falseNorthing)
lat0
- lat origin of the coord. system on the projection planelon0
- lon origin of the coord. system on the projection planepar1
- standard parallel 1par2
- standard parallel 2falseEasting
- false easting in kmfalseNorthing
- false easting in km
java.lang.IllegalArgumentException
- if lat0, par1, par2 = +/-90 degMethod Detail |
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public ProjectionImpl constructCopy()
constructCopy
in class ProjectionImpl
public java.lang.Object clone()
clone
in class ProjectionImpl
public boolean equals(java.lang.Object proj)
equals
in interface Projection
equals
in class ProjectionImpl
proj
- object to check
public double getParallelTwo()
public void setParallelTwo(double par)
par
- the second standard parallelpublic double getParallelOne()
public void setParallelOne(double par)
par
- the first standard parallelpublic double getOriginLon()
public void setOriginLon(double lon)
lon
- the origin longitude.public double getOriginLat()
public void setOriginLat(double lat)
lat
- the origin latitude.public double getFalseEasting()
public void setFalseEasting(double falseEasting)
falseEasting
- x offsetpublic double getFalseNorthing()
public void setFalseNorthing(double falseNorthing)
falseNorthing
- y offsetpublic java.lang.String getProjectionTypeLabel()
getProjectionTypeLabel
in class ProjectionImpl
public java.lang.String paramsToString()
paramsToString
in interface Projection
paramsToString
in class ProjectionImpl
public double getScale(double lat)
lat
- lat to use
public boolean crossSeam(ProjectionPoint pt1, ProjectionPoint pt2)
crossSeam
in interface Projection
crossSeam
in class ProjectionImpl
pt1
- point 1pt2
- point 2
public ProjectionPoint latLonToProj(LatLonPoint latLon, ProjectionPointImpl result)
latLonToProj
in interface Projection
latLonToProj
in class ProjectionImpl
latLon
- convert from these lat, lon coordinatesresult
- the object to write to
public LatLonPoint projToLatLon(ProjectionPoint world, LatLonPointImpl result)
projToLatLon
in interface Projection
projToLatLon
in class ProjectionImpl
world
- convert from these projection coordinatesresult
- the object to write to
public float[][] latLonToProj(float[][] from, float[][] to, int latIndex, int lonIndex)
latLonToProj
in class ProjectionImpl
from
- array of lat/lon coordinates: from[2][n],
where from[0][i], from[1][i] is the (lat,lon)
coordinate of the ith pointto
- resulting array of projection coordinates,
where to[0][i], to[1][i] is the (x,y) coordinate
of the ith pointlatIndex
- index of latitude in "from"lonIndex
- index of longitude in "from"
public float[][] projToLatLon(float[][] from, float[][] to)
projToLatLon
in class ProjectionImpl
from
- array of lat/lon coordinates: from[2][n], where
(from[0][i], from[1][i]) is the (lat,lon) coordinate
of the ith pointto
- resulting array of projection coordinates: to[2][n]
where (to[0][i], to[1][i]) is the (x,y) coordinate
of the ith point
public double[][] latLonToProj(double[][] from, double[][] to, int latIndex, int lonIndex)
latLonToProj
in class ProjectionImpl
from
- array of lat/lon coordinates: from[2][n],
where from[0][i], from[1][i] is the (lat,lon)
coordinate of the ith pointto
- resulting array of projection coordinates,
where to[0][i], to[1][i] is the (x,y) coordinate
of the ith pointlatIndex
- index of latitude in "from"lonIndex
- index of longitude in "from"
public double[][] projToLatLon(double[][] from, double[][] to)
projToLatLon
in class ProjectionImpl
from
- array of lat/lon coordinates: from[2][n], where
(from[0][i], from[1][i]) is the (lat,lon) coordinate
of the ith pointto
- resulting array of projection coordinates: to[2][n]
where (to[0][i], to[1][i]) is the (x,y) coordinate
of the ith point
public static void main(java.lang.String[] args)
args
- not used
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