`Supplementary Data` — Supplementary Data Mix-ins¶

Modules for accessing supplementary data when computing exterior orientation.

Added in version 0.1.0.

class ale.base.data_naif.NaifSpice¶

Bases: object

Mix-in for reading data from NAIF SPICE Kernels.

property correct_lt_to_surface¶

Returns if light time correction should be made to the surface instead of to the center of the body. This is defined by a keyword in ISIS IAKs. If the keyword is not defined in any loaded kernels then False is returned.

Expects ikid to be defined. This should be an integer containing the Naif Id code of the instrument.

property detector_center_line¶

Returns the center detector line. Expects ikid to be defined. This should be an integer containing the Naif Id code of the instrument.

Returns¶

: float: Detector line of the principal point

property detector_center_sample¶

Returns the center detector sample. Expects ikid to be defined. This should be an integer containing the Naif Id code of the instrument.

Returns¶

: float: Detector sample of the principal point

property ephemeris_start_time¶

Returns the starting ephemeris time of the image. Expects spacecraft_id to be defined. This must be the integer Naif Id code for the spacecraft. Expects spacecraft_clock_start_count to be defined. This must be a string containing the start clock count of the spacecraft

Returns¶

: double: Starting ephemeris time of the image

property ephemeris_stop_time¶

Returns the ephemeris stop time of the image. Expects spacecraft_id to be defined. This must be the integer Naif Id code for the spacecraft. Expects spacecraft_clock_stop_count to be defined. This must be a string containing the stop clock count of the spacecraft

Returns¶

: double: Ephemeris stop time of the image

property focal2pixel_lines¶

Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: list<double>: focal plane to detector lines

property focal2pixel_samples¶

Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: list<double>: focal plane to detector samples

property focal_length¶

Returns the focal length of the sensor Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: float: focal length

property ikid¶

Returns the Naif ID code for the instrument Expects the instrument_id to be defined. This must be a string containing the short name of the instrument.

Returns¶

: int: Naif ID used to for indentifying the instrument in Spice kernels

property kernels¶

Get the NAIF SPICE Kernels to furnish

There are two ways to specify which kernels a driver will use:

Passing the ‘kernels’ property into load(s) or at instantiation. This can be either a straight iterable or a dictionary that specifies the kernels in ISIS style (‘TargetPosition’, ‘InstrumentPosition’, etc).
Set the ALESPICEROOT environment variable. This variable should be the path to a directory that contains directories whose naming convention matches the PDS Kernel Archives format, shortMissionName-versionInfo. The directory corresponding to the driver’s mission will be searched for the approriate meta kernel to load.

Returns¶

: str: The light time and abberation correction string for use in NAIF calls. See https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/req/abcorr.html for the different options available.

property naif_keywords¶

Returns¶

: dict: Dictionary of keywords and values that ISIS creates and attaches to the label

property odtk¶

The coefficients for the radial distortion model Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: list: Radial distortion coefficients

property odtx¶

Returns the x coefficient for the optical distortion model Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: list: Optical distortion x coefficients

property odty¶

Returns the y coefficient for the optical distortion model. Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: list: Optical distortion y coefficients

property pixel2focal_x¶: Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: list<double> detector to focal plane x

property pixel2focal_y¶: Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: list<double> detector to focal plane y

property pixel_size¶: Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: float pixel size

property reference_frame¶: Returns a string containing the name of the target reference frame Expects target_name to be defined. This must be a string containing the name of the target body

Returns¶

: str String name of the target reference frame

property sensor_frame_id¶

Returns the Naif ID code for the sensor reference frame Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: int: Naif ID code for the sensor frame

property sensor_orientation¶

Returns quaternions describing the sensor orientation. Expects ephemeris_time to be defined. This must be a floating point number containing the ephemeris time. Expects instrument_id to be defined. This must be a string containing the short name of the instrument. Expects reference frame to be defined. This must be a string containing the name of the target reference frame.

Returns¶

: list: Quaternions describing the orientation of the sensor

property sensor_position¶

Returns a tuple with information detailing the position of the sensor at the time of the image. Expects ephemeris_time to be defined. This must be a floating point number containing the ephemeris time. Expects spacecraft_name to be defined. This must be a string containing the name of the spacecraft containing the sensor. Expects reference_frame to be defined. This must be a sring containing the name of the target reference frame. Expects target_name to be defined. This must be a string containing the name of the target body.

Returns¶

: (positions, velocities, times): a tuple containing a list of positions, a list of velocities, and a list of times

property spacecraft_id¶

Returns the Naif ID code for the spacecraft Expects the spacecraft_name to be defined. This must be a string containing the name of the spacecraft.

Returns¶

: int: Naif ID code for the spacecraft

property sun_position¶

Returns a tuple with information detailing the sun position at the time of the image. Expects center_ephemeris_time to be defined. This must be a floating point number containing the average of the start and end ephemeris time. Expects reference frame to be defined. This must be a sring containing the name of the target reference frame. Expects target_name to be defined. This must be a string containing the name of the target body.

Returns¶

: (sun_positions, sun_velocities): a tuple containing a list of sun positions, a list of sun velocities

property swap_observer_target¶

Returns if the observer and target should be swapped when determining the sensor state relative to the target. This is defined by a keyword in ISIS IAKs. If the keyword is not defined in any loaded kernels then False is returned.

Expects ikid to be defined. This should be an integer containing the Naif Id code of the instrument.

property target_body_radii¶

Returns a list containing the radii of the target body Expects target_name to be defined. This must be a string containing the name of the target body

Returns¶

: list<double>: Radius of all three axis of the target body

property target_frame_id¶

Returns the Naif ID code for the target reference frame Expects the target_id to be defined. This must be the integer Naif ID code for the target body.

Returns¶

: int: Naif ID code for the target frame

property target_id¶

Returns the Naif ID code for the target body Expects target_name to be defined. This must be a string containig the name of the target body.

Returns¶

: int: Naif ID code for the target body

Added in version 0.1.0.

class ale.base.data_isis.IsisSpice¶

Bases: object

Mixin class for reading from an ISIS cube that has been spiceinit’d

Attributes¶

_labelPVLModule: Dict-like object with PVL keys
_inst_pointing_tabledict: Dictionary that contains information about the rotation from J2000 to the sensor reference frame. All of the values for each property, such as angular velocity, are stored in a list or numpy array where each entry is the property at a different time.
_body_orientation_tabledict: Dictionary that contains information about the rotation from J2000 to the body fixed reference frame. All of the values for each property, such as angular velocity, are stored in a list or numpy array where each entry is the property at a different time.
_inst_position_tabledict: Dictionary that contains information about the location of the sensor relative to the center of the target body. All of the values for each property, such as velocity, are stored in a list or numpy array where each entry is the property at a different time.
_sun_position_tabledict: Dictionary that contains information about the location of the sun relative to the center of the target body. All of the values for each property, such as velocity, are stored in a list or numpy array where each entry is the property at a different time.

property body_orientation_table¶

ISIS Table containing the rotation between the J2000 reference frame and the target body reference frame.

Returns¶

: dict: Body orientation table

property detector_center_line¶

The center of the CCD in detector pixels Expects ikid to be defined. this should be the integer Naif ID code for the instrument.

Returns¶

list :: The center of the CCD formatted as line, sample

property detector_center_sample¶

The center of the CCD in detector pixels Expects ikid to be defined. this should be the integer Naif ID code for the instrument.

Returns¶

list :: The center of the CCD formatted as line, sample

property ephemeris_start_time¶

The image start time in ephemeris time Expects sclock_hex_string to be defined. This should be a string containing the hex start time of the image

Returns¶

float :: The image start ephemeris time

property focal2pixel_lines¶

The line component of the affine transformation from focal plane coordinates to centered ccd pixels Expects naif_keywords to be defined. This should be a dict containing Naif keyworkds from the label. Expects ikid to be defined. This should be the integer Naif ID code for the instrument.

Returns¶

list :: The coefficients of the affine transformation formatted as constant, x, y

property focal2pixel_samples¶

The sample component of the affine transformation from focal plane coordinates to centered ccd pixels Expects naif_keywords to be defined. This should be a dict containing Naif keyworkds from the label. Expects ikid to be defined. This should be the integer Naif ID code for the instrument.

Returns¶

list :: The coefficients of the affine transformation formatted as constant, x, y

property focal_length¶

The focal length of the instrument Expects naif_keywords to be defined. This should be a dict containing Naif keyworkds from the label. Expects ikid to be defined. This should be the integer Naif ID code for the instrument.

Returns¶

float :: The focal length in millimeters

property frame_chain¶

Return the root node of the rotation frame tree/chain.

The root node is the J2000 reference frame. The other nodes in the tree can be accessed via the methods in the FrameNode class.

Returns¶

FrameNode: The root node of the frame tree. This will always be the J2000 reference frame.

property ikid¶

The NAIF id for the instrument Expects kernels_group to be defined. This should be a PVLModule containing the kernels group.

Returns¶

int :: The instrument id

property inst_pointing_table¶

ISIS Table containing the rotation between the J2000 reference frame and the instrument reference frame.

Returns¶

: dict: Instrument pointing table

property inst_position_table¶

ISIS Table containing the location of the instrument relative to the target body in the J2000 reference frame.

Returns¶

: dict: Instrument position table

property naif_keywords¶

The NaifKeywords group from the file label that contains stored values from the original SPICE kernels

Returns¶

PVLModule :: The stored NAIF keyword values

property odtk¶

Returns optical distortion coefficients Expects ikid to be defined. This should be the integer Naif ID code for the instrument

Returns¶

: list: optical distortion coefficients

property pixel2focal_x¶: Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: list<double> detector to focal plane x

property pixel2focal_y¶: Expects ikid to be defined. This must be the integer Naif id code of the instrument

Returns¶

: list<double> detector to focal plane y

property sensor_position¶

Sensor position Expects inst_position_table to be defined. This should be a dictionary that contains information about the location of the sensor relative to the center of the target body. Expects number_of_ephemerides to be defined. This should be an integer containing the number of instrument position states.

Returns¶

: (positions, velocities, times): a tuple containing a list of positions, a list of velocities, and a list of times

property sun_position¶

The sun position Expects sun_position_table to be defined. This should be a dictionary that contains information about the location of the sun relative to the center of the target body.

Returns¶

array :: The sun position vectors relative to the center of the target body in the J2000 reference frame as a tuple of numpy arrays.

property sun_position_table¶

ISIS Table containing the location of the sun relative to the target body in the J2000 reference frame.

Returns¶

: dict: Sun position table

property target_body_radii¶

The triaxial radii of the target body Expects naif_keywords to be defined. This should be a dict containing Naif keyworkds from the label.

Returns¶

list :: The body radii in kilometers. For most bodies, this is formatted as semimajor, semimajor, semiminor

ale.base.data_isis.parse_table(table_label, data)¶

Parse an ISIS table into a dictionary.

Parameters¶

table_labelPVLModule: The ISIS table label
databytes: The binary component of the ISIS table

Returns¶

dict :: The table as a dictionary with the keywords from the label and the binary data

ale.base.data_isis.read_table_data(table_label, cube)¶

Helper function to read all of the binary table data

Parameters¶

table_labelPVLModule: The ISIS table label
cubefile: The ISIS cube file

Returns¶

bytes :: The binary portion of the table data

ale.base.data_isis.rotate_state(table, rotation)¶

Rotate the positions and velocities in an ISIS position Table.

If the table stores states as a function, then it will re compute them based on the original size of the table.

Parameters¶

tabledict: The position table as a dictionary
rotationTimeDependentRotation: The rotation to rotate the positions by

Returns¶

: 2darray: Array of rotated positions
: 2darray: Array of rotated velocities. Returns None if no velocities are in the table.
: array: Array of times for the states

Supplementary Data — Supplementary Data Mix-ins¶

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`Supplementary Data` — Supplementary Data Mix-ins¶