This is an automated email from the ASF dual-hosted git repository.
desruisseaux pushed a commit to branch geoapi-4.0
in repository https://gitbox.apache.org/repos/asf/sis.git
commit 8b97aed4ccce5db0a1c0338fc093dec94972a1d6
Author: Martin Desruisseaux <martin.desruisse...@geomatys.com>
AuthorDate: Tue May 3 14:41:10 2022 +0200
Fix the unicode character for Greek Beta letter.
---
.../projection/LambertAzimuthalEqualArea.java | 68 +++++++++++-----------
.../referencing/operation/projection/Mercator.java | 2 +-
2 files changed, 35 insertions(+), 35 deletions(-)
diff --git
a/core/sis-referencing/src/main/java/org/apache/sis/referencing/operation/projection/LambertAzimuthalEqualArea.java
b/core/sis-referencing/src/main/java/org/apache/sis/referencing/operation/projection/LambertAzimuthalEqualArea.java
index 4901bfeeb8..8374e24989 100644
---
a/core/sis-referencing/src/main/java/org/apache/sis/referencing/operation/projection/LambertAzimuthalEqualArea.java
+++
b/core/sis-referencing/src/main/java/org/apache/sis/referencing/operation/projection/LambertAzimuthalEqualArea.java
@@ -54,16 +54,16 @@ public class LambertAzimuthalEqualArea extends
AuthalicConversion {
/**
* Sine and cosine of authalic latitude of origin. In the spherical case,
- * the authalic latitude ß and the geodetic latitude φ are the same.
+ * the authalic latitude β and the geodetic latitude φ are the same.
*
* <h4>Possible simplification</h4>
- * In equatorial case, sin(ß₀)=0 and cos(ß₀)=1. We could do special cases
with simplifications in the
+ * In equatorial case, sin(β₀)=0 and cos(β₀)=1. We could do special cases
with simplifications in the
* {@code transform(…)} formulas, but the result does not seem simpler
enough to worth code branching.
*
- * <p>In the polar case, sin(ß₀)=1 and cos(ß₀)=0. But the equations become
indeterminate (we get 0/0)
+ * <p>In the polar case, sin(β₀)=1 and cos(β₀)=0. But the equations become
indeterminate (we get 0/0)
* and a different set of equations must be used.</p>
*/
- private final double sinß0, cosß0;
+ private final double sinβ0, cosβ0;
/**
* {@code true} if the projection is at a pole.
@@ -108,10 +108,10 @@ public class LambertAzimuthalEqualArea extends
AuthalicConversion {
final double sinφ0 = sin(φ0);
final double cosφ0 = cos(φ0);
polar = abs(sinφ0) == 1; // sin(φ) == 1 implies a tolerance
∆φ≈1E-6°.
- sinß0 = sinβ(sinφ0);
- cosß0 = sqrt(1 - sinß0*sinß0);
+ sinβ0 = sinβ(sinφ0);
+ cosβ0 = sqrt(1 - sinβ0*sinβ0);
/*
- * In the polar case we have cos(φ₀) ≈ 0 and cos(ß₀) ≈ 0, which cause
D = 0/0.
+ * In the polar case we have cos(φ₀) ≈ 0 and cos(β₀) ≈ 0, which cause
D = 0/0.
* Trying to evaluate the indeterminate with L'Hôpital's rule produce
infinity.
* Consequently a different set of formulas for the polar form must be
used not
* only here but also in the `transform(…)` and `inverseTransform(…)`
methods.
@@ -127,7 +127,7 @@ public class LambertAzimuthalEqualArea extends
AuthalicConversion {
denormalize.convertBefore(1, -1, null);
}
} else {
- final double D = cosφ0 / (sqrt(1 -
eccentricitySquared*(sinφ0*sinφ0)) * cosß0);
+ final double D = cosφ0 / (sqrt(1 -
eccentricitySquared*(sinφ0*sinφ0)) * cosβ0);
final double Rq2 = (1 - eccentricitySquared) * qmPolar/2;
denormalize.convertBefore(0, D, null);
denormalize.convertBefore(1, Rq2/D, null);
@@ -139,8 +139,8 @@ public class LambertAzimuthalEqualArea extends
AuthalicConversion {
*/
LambertAzimuthalEqualArea(final LambertAzimuthalEqualArea other) {
super(other);
- sinß0 = other.sinß0;
- cosß0 = other.cosß0;
+ sinβ0 = other.sinβ0;
+ cosβ0 = other.cosβ0;
polar = other.polar;
}
@@ -150,7 +150,7 @@ public class LambertAzimuthalEqualArea extends
AuthalicConversion {
*/
@Override
final String[] getInternalParameterNames() {
- return new String[] {"ß₀"};
+ return new String[] {"β₀"};
}
/**
@@ -159,7 +159,7 @@ public class LambertAzimuthalEqualArea extends
AuthalicConversion {
*/
@Override
final double[] getInternalParameterValues() {
- return new double[] {asin(sinß0)};
+ return new double[] {asin(sinβ0)};
}
/**
@@ -182,11 +182,11 @@ public class LambertAzimuthalEqualArea extends
AuthalicConversion {
final double sinφ = sin(φ);
if (!polar) {
/*
- * Note: in the spherical case, ß = φ (ß is the authalic radius).
+ * Note: in the spherical case, β = φ (β is the authalic radius).
*/
- final double sinß = sinβ(sinφ);
- final double cosß = sqrt(1 - sinß*sinß);
- final double c = sinß0*sinß + cosß0*cosß*cosλ + 1;
+ final double sinβ = sinβ(sinφ);
+ final double cosβ = sqrt(1 - sinβ*sinβ);
+ final double c = sinβ0*sinβ + cosβ0*cosβ*cosλ + 1;
/*
* The `c` factor is 0 when projecting the antipodal point of
origin.
* The antipodal point is actually all points on a circle of
radius 2.
@@ -196,8 +196,8 @@ public class LambertAzimuthalEqualArea extends
AuthalicConversion {
if (B == Double.POSITIVE_INFINITY) {
B = Double.NaN;
}
- final double x = cosß*sinλ; // (x,y)×B =
(E,N)
- final double y = cosß0*sinß - sinß0*cosß*cosλ;
+ final double x = cosβ*sinλ; // (x,y)×B =
(E,N)
+ final double y = cosβ0*sinβ - sinβ0*cosβ*cosλ;
if (dstPts != null) {
dstPts[dstOff ] = B * x;
dstPts[dstOff+1] = B * y;
@@ -208,16 +208,16 @@ public class LambertAzimuthalEqualArea extends
AuthalicConversion {
if (!derivate) {
return null;
}
- final double dsinß_dφ = dqm_dφ(sinφ, cos(φ)) / qmPolar;
- final double dcosß_dφ = -dsinß_dφ * (sinß/cosß);
- final double cosλdcosß = dcosß_dφ * cosλ;
- final double dy_dλ = sinß0*x;
- final double db_dλ = cosß0*x / (2*c);
- final double dy_dφ = (cosß0*dsinß_dφ - sinß0*cosλdcosß);
- final double db_dφ = -(sinß0*dsinß_dφ + cosß0*cosλdcosß) /
(2*c);
+ final double dsinβ_dφ = dqm_dφ(sinφ, cos(φ)) / qmPolar;
+ final double dcosβ_dφ = -dsinβ_dφ * (sinβ/cosβ);
+ final double cosλdcosβ = dcosβ_dφ * cosλ;
+ final double dy_dλ = sinβ0*x;
+ final double db_dλ = cosβ0*x / (2*c);
+ final double dy_dφ = (cosβ0*dsinβ_dφ - sinβ0*cosλdcosβ);
+ final double db_dφ = -(sinβ0*dsinβ_dφ + cosβ0*cosλdcosβ) /
(2*c);
return new Matrix2(
- B * (cosλ + db_dλ*sinλ)*cosß,
- B * (dcosß_dφ + db_dφ*cosß)*sinλ,
+ B * (cosλ + db_dλ*sinλ)*cosβ,
+ B * (dcosβ_dφ + db_dφ*cosβ)*sinλ,
B * (dy_dλ + db_dλ*y),
B * (dy_dφ + db_dφ*y));
}
@@ -257,28 +257,28 @@ public class LambertAzimuthalEqualArea extends
AuthalicConversion {
{
double x = srcPts[srcOff ];
double y = srcPts[srcOff+1];
- double sinß;
+ double sinβ;
if (polar) {
- sinß = (x*x + y*y)/qmPolar - 1;
+ sinβ = (x*x + y*y)/qmPolar - 1;
} else {
final double ρ = fastHypot(x, y);
final double C = 2*asin(ρ / 2);
final double cosC = cos(C);
final double sinC = sin(C);
final double ysinC = y*sinC;
- sinß = cosC*sinß0;
+ sinβ = cosC*sinβ0;
if (cosC != 1) { // cos(C) == 1 implies y/ρ =
0/0.
- sinß += ysinC*cosß0/ρ;
+ sinβ += ysinC*cosβ0/ρ;
}
- y = ρ*cosC*cosß0 - ysinC*sinß0;
+ y = ρ*cosC*cosβ0 - ysinC*sinβ0;
x *= sinC;
}
dstPts[dstOff ] = atan2(x, y);
- dstPts[dstOff+1] = isSpherical ? asin(sinß) : φ(sinß);
+ dstPts[dstOff+1] = isSpherical ? asin(sinβ) : φ(sinβ);
}
/*
* We do not provide a specialized sub-class for the spherical case because
- * simplifications are too small. We only need to skip the φ ↔ ß
conversion.
+ * simplifications are too small. We only need to skip the φ ↔ β
conversion.
*/
}
diff --git
a/core/sis-referencing/src/main/java/org/apache/sis/referencing/operation/projection/Mercator.java
b/core/sis-referencing/src/main/java/org/apache/sis/referencing/operation/projection/Mercator.java
index 88b3bb0ece..1ff60359eb 100644
---
a/core/sis-referencing/src/main/java/org/apache/sis/referencing/operation/projection/Mercator.java
+++
b/core/sis-referencing/src/main/java/org/apache/sis/referencing/operation/projection/Mercator.java
@@ -318,7 +318,7 @@ public class Mercator extends ConformalProjection {
case 3: {
throw new IllegalArgumentException("Type 3 not yet
supported.");
/*
- * For supporting this case, we need to convert geodetic
latitude (φ) to authalic latitude (ß)
+ * For supporting this case, we need to convert geodetic
latitude (φ) to authalic latitude (β)
* using for example the formulas for Lambert Azimuthal
Equal Area. We could set a flag telling
* that we need to instantiate a subclass. Then we
fall-through case 2 below.
*/
