fix confusion with coordinate names and ranges

pyfar/classes/coordinates.py

@@ -50,44 +50,44 @@
        coordinate system in radians. :math:`0` radians are defined in positive
        x-direction, :math:`\pi/2` radians in positive y-direction and so on
        (:math:`-\infty` < azimuth < :math:`\infty`, :math:`2\pi`-cyclic).
-   * - :py:func:`~pyfar.classes.coordinates.Coordinates.elevation`
+   * - :py:func:`~pyfar.classes.coordinates.Coordinates.colatitude`
      - Angle in the x-z plane of the right handed Cartesian coordinate system
-       in radians. :math:`0` radians elevation are defined in positive
+       in radians. :math:`0` radians colatitude are defined in positive
        z-direction, :math:`\pi/2` radians in positive x-direction, and
        :math:`\pi` in negative z-direction
-       (:math:`\pi/2` < elevation < :math:`\pi/2`). The elevation is a
+       (:math:`0\leq` colatitude :math:`\leq\pi`). The colatitude is a
        variation of the elevation angle.
-   * - :py:func:`~pyfar.classes.coordinates.Coordinates.colatitude`
+   * - :py:func:`~pyfar.classes.coordinates.Coordinates.elevation`
      - Angle in the x-z plane of the right handed Cartesian coordinate system
-       in radians. :math:`0` radians colatitude are defined in positive
+       in radians. :math:`0` radians elevation are defined in positive
        x-direction, :math:`\pi/2` radians in positive z-direction, and
        :math:`-\pi/2` in negative z-direction
-       (:math:`0` < colatitude < :math:`\pi`). The colatitude is a
+       (:math:`-\pi/2\leq` elevation :math:`\leq\pi/2`). The elevation is a
        variation of the colatitude.
    * - :py:func:`~pyfar.classes.coordinates.Coordinates.lateral`
      - Counter clock-wise angle in the x-y plane of the right handed Cartesian
        coordinate system in radians. :math:`0` radians are defined in positive
        x-direction, :math:`\pi/2` radians in positive y-direction and
        :math:`-\pi/2` in negative y-direction
-       (:math:`-\pi/2` < lateral < :math:`\pi/2`).
+       (:math:`-\pi/2\leq` lateral :math:`\leq\pi/2`).
    * - :py:func:`~pyfar.classes.coordinates.Coordinates.polar`
      - Angle in the x-z plane of the right handed Cartesian coordinate system
-       in radians. :math:`0` radians elevation are defined in positive
+       in radians. :math:`0` radians polar angle are defined in positive
        x-direction, :math:`\pi/2` radians in positive z-direction,
        :math:`\pi` in negative x-direction and so on
        (:math:`-\infty` < polar < :math:`\infty`, :math:`2\pi`-cyclic).
    * - :py:func:`~pyfar.classes.coordinates.Coordinates.frontal`
      - Angle in the y-z plane of the right handed Cartesian coordinate system
-       in radians. :math:`0` radians elevation are defined in positive
+       in radians. :math:`0` radians frontal angle are defined in positive
        y-direction, :math:`\pi/2` radians in positive z-direction,
        :math:`\pi` in negative y-direction and so on
        (:math:`-\infty` < frontal < :math:`\infty`, :math:`2\pi`-cyclic).
    * - :py:func:`~pyfar.classes.coordinates.Coordinates.upper`
      - Angle in the x-z plane of the right handed Cartesian coordinate system
-       in radians. :math:`0` radians elevation are defined in positive
+       in radians. :math:`0` radians upper angle are defined in positive
        x-direction, :math:`\pi/2` radians in positive z-direction, and
        :math:`\pi` in negative x-direction
-       (:math:`0` < upper < :math:`\pi`).
+       (:math:`0\leq` upper :math:`\leq\pi`).
    * - :py:func:`~pyfar.classes.coordinates.Coordinates.radius`
      - Distance to the origin of the right handed Cartesian coordinate system
        in meters (:math:`0` < radius < :math:`\infty`).