Python numpy.ma.arctan2() Examples

The following are 10 code examples of numpy.ma.arctan2(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module numpy.ma , or try the search function .
Example #1
Source File: quiver.py    From Computable with MIT License 5 votes vote down vote up 
def _angles_lengths(self, U, V, eps=1):
        xy = self.ax.transData.transform(self.XY)
        uv = np.hstack((U[:, np.newaxis], V[:, np.newaxis]))
        xyp = self.ax.transData.transform(self.XY + eps * uv)
        dxy = xyp - xy
        angles = np.arctan2(dxy[:, 1], dxy[:, 0])
        lengths = np.absolute(dxy[:, 0] + dxy[:, 1] * 1j) / eps
        return angles, lengths
Example #2
Source File: quiver.py    From matplotlib-4-abaqus with MIT License 5 votes vote down vote up 
def _angles_lengths(self, U, V, eps=1):
        xy = self.ax.transData.transform(self.XY)
        uv = np.hstack((U[:, np.newaxis], V[:, np.newaxis]))
        xyp = self.ax.transData.transform(self.XY + eps * uv)
        dxy = xyp - xy
        angles = np.arctan2(dxy[:, 1], dxy[:, 0])
        lengths = np.absolute(dxy[:, 0] + dxy[:, 1] * 1j) / eps
        return angles, lengths
Example #3
Source File: quiver.py    From neural-network-animation with MIT License 5 votes vote down vote up 
def _angles_lengths(self, U, V, eps=1):
        xy = self.ax.transData.transform(self.XY)
        uv = np.hstack((U[:, np.newaxis], V[:, np.newaxis]))
        xyp = self.ax.transData.transform(self.XY + eps * uv)
        dxy = xyp - xy
        angles = np.arctan2(dxy[:, 1], dxy[:, 0])
        lengths = np.absolute(dxy[:, 0] + dxy[:, 1] * 1j) / eps
        return angles, lengths
Example #4
Source File: quiver.py    From GraphicDesignPatternByPython with MIT License 5 votes vote down vote up 
def _angles_lengths(self, U, V, eps=1):
        xy = self.ax.transData.transform(self.XY)
        uv = np.column_stack((U, V))
        xyp = self.ax.transData.transform(self.XY + eps * uv)
        dxy = xyp - xy
        angles = np.arctan2(dxy[:, 1], dxy[:, 0])
        lengths = np.hypot(*dxy.T) / eps
        return angles, lengths
Example #5
Source File: quiver.py    From python3_ios with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def _angles_lengths(self, U, V, eps=1):
        xy = self.ax.transData.transform(self.XY)
        uv = np.column_stack((U, V))
        xyp = self.ax.transData.transform(self.XY + eps * uv)
        dxy = xyp - xy
        angles = np.arctan2(dxy[:, 1], dxy[:, 0])
        lengths = np.hypot(*dxy.T) / eps
        return angles, lengths
Example #6
Source File: stages.py    From aws-greengrass-mini-fulfillment with Apache License 2.0 5 votes vote down vote up 
def cart2polar(x, y, degrees=True):
    """
    Convert cartesian X and Y to polar RHO and THETA.
    :param x: x cartesian coordinate
    :param y: y cartesian coordinate
    :param degrees: True = return theta in degrees, False = return theta in
        radians. [default: True]
    :return: r, theta
    """
    rho = ma.sqrt(x ** 2 + y ** 2)
    theta = ma.arctan2(y, x)
    if degrees:
        theta *= (180 / math.pi)

    return rho, theta
Example #7
Source File: quiver.py    From coffeegrindsize with MIT License 5 votes vote down vote up 
def _angles_lengths(self, U, V, eps=1):
        xy = self.ax.transData.transform(self.XY)
        uv = np.column_stack((U, V))
        xyp = self.ax.transData.transform(self.XY + eps * uv)
        dxy = xyp - xy
        angles = np.arctan2(dxy[:, 1], dxy[:, 0])
        lengths = np.hypot(*dxy.T) / eps
        return angles, lengths
Example #8
Source File: testing.py    From CogAlg with MIT License 5 votes vote down vote up 
def _compare(self):
            dy, dx = compare_slices(self._i, self._rng, operator=angle_diff)

            self._derts[1:][central_slice(self._rng)] += np.concatenate((dy, dx))
            self._derts[0] = ma.hypot(
                ma.arctan2(*self.dy),
                ma.arctan2(*self.dx),
            )

            self._derts[rim_mask(self._i.shape, rng)] = ma.masked
            return self


    # -----------------------------------------------------------------------------
    # Functions
Example #9
Source File: quiver.py    From CogAlg with MIT License 5 votes vote down vote up 
def _angles_lengths(self, U, V, eps=1):
        xy = self.ax.transData.transform(self.XY)
        uv = np.column_stack((U, V))
        xyp = self.ax.transData.transform(self.XY + eps * uv)
        dxy = xyp - xy
        angles = np.arctan2(dxy[:, 1], dxy[:, 0])
        lengths = np.hypot(*dxy.T) / eps
        return angles, lengths
Example #10
Source File: quiver.py    From twitter-stock-recommendation with MIT License 5 votes vote down vote up 
def _angles_lengths(self, U, V, eps=1):
        xy = self.ax.transData.transform(self.XY)
        uv = np.hstack((U[:, np.newaxis], V[:, np.newaxis]))
        xyp = self.ax.transData.transform(self.XY + eps * uv)
        dxy = xyp - xy
        angles = np.arctan2(dxy[:, 1], dxy[:, 0])
        lengths = np.hypot(*dxy.T) / eps
        return angles, lengths