Index

A

add_columns() (ccatkidlib.analysis.core.network.Network method) add_data_to_properties() (in module ccatkidlib.analysis.utils.dataframe) add_dir() (in module ccatkidlib.io)

all_boards (ccatkidlib.rfsoc.rfsoc_daq.R attribute) analysis_cfg (ccatkidlib.analysis.core.data.Data attribute) (ccatkidlib.analysis.core.detector.Detector attribute)

B

bid (ccatkidlib.analysis.core.data.Data attribute) (ccatkidlib.analysis.core.detector.Detector attribute)

board_list (ccatkidlib.rfsoc.rfsoc_daq.R attribute) board_num (ccatkidlib.rfsoc.rfsoc_daq.R attribute)

C

cable_delay (ccatkidlib.analysis.core.detector.Detector attribute) (ccatkidlib.analysis.core.detector.Detector property) (ccatkidlib.analysis.core.target.Target property) (ccatkidlib.analysis.core.vna.VNA attribute) (ccatkidlib.analysis.core.vna.VNA property) calc_complex_fit() (ccatkidlib.analysis.core.detector.Detector static method) calc_frac_f() (ccatkidlib.analysis.core.detector.Detector static method) calc_IQ_circle_fit() (ccatkidlib.analysis.core.detector.Detector static method) calc_noise_shift() (ccatkidlib.analysis.core.detector.Detector static method) calc_phase_fit() (ccatkidlib.analysis.core.detector.Detector static method) calc_phase_spline() (ccatkidlib.analysis.core.detector.Detector static method) calc_phase_to_f() (ccatkidlib.analysis.core.detector.Detector static method) calcphasebounds() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) calcphasenlinbounds() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) capture_packets() (ccatkidlib.rfsoc.rfsoc_timestream.Streamer method) ccatkidlib module ccatkidlib.analysis module ccatkidlib.analysis.core module ccatkidlib.analysis.core.data module ccatkidlib.analysis.core.detector module ccatkidlib.analysis.core.network module ccatkidlib.analysis.core.sweep module ccatkidlib.analysis.core.target module ccatkidlib.analysis.core.timestream module ccatkidlib.analysis.core.vna module ccatkidlib.analysis.fit module ccatkidlib.analysis.fit.fit module ccatkidlib.analysis.fit.kid_phase_fit module ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det module ccatkidlib.analysis.fit.kid_phase_fit.phase_fit module ccatkidlib.analysis.fit.kid_phase_fit.utils module ccatkidlib.analysis.utils module ccatkidlib.analysis.utils.dataframe module

ccatkidlib.analysis.utils.multiprocess module ccatkidlib.analysis.utils.pair module ccatkidlib.analysis.utils.pickle module ccatkidlib.analysis.viz module ccatkidlib.analysis.viz.viz_utils module ccatkidlib.io module ccatkidlib.log module ccatkidlib.rfsoc module ccatkidlib.rfsoc.arg_utils module ccatkidlib.rfsoc.rfsoc_daq module ccatkidlib.rfsoc.rfsoc_timestream module ccatkidlib.scripts module ccatkidlib.scripts.live_plot module ccatkidlib.scripts.live_plot.live_detector module ccatkidlib.scripts.live_plot.live_utils module ccatkidlib.utils module check_max_workers() (in module ccatkidlib.analysis.utils.multiprocess) check_properties() (in module ccatkidlib.analysis.utils.dataframe) circle_fit() (in module ccatkidlib.analysis.fit.fit) Circlefit (class in ccatkidlib.analysis.fit.kid_phase_fit.utils) coalesce_join() (in module ccatkidlib.analysis.utils.dataframe) comb (ccatkidlib.analysis.core.data.Data property) combine_npy() (in module ccatkidlib.io) combine_properties() (ccatkidlib.analysis.core.network.Network method) complex_fit() (ccatkidlib.analysis.core.detector.Detector method) complexS21() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) config_dirs (ccatkidlib.rfsoc.rfsoc_daq.R attribute) create_batches() (in module ccatkidlib.analysis.utils.multiprocess) create_dir() (in module ccatkidlib.io) create_noise_files() (in module ccatkidlib.io) create_tree() (in module ccatkidlib.io) CRITICAL (ccatkidlib.log.Style attribute) curr_date (ccatkidlib.rfsoc.rfsoc_daq.R attribute) cycle_cmap() (in module ccatkidlib.analysis.viz.viz_utils)

D

data (ccatkidlib.analysis.core.data.Data property) (ccatkidlib.analysis.core.sweep.Sweep property) (ccatkidlib.analysis.core.target.Target property) (ccatkidlib.analysis.core.timestream.Timestream attribute) (ccatkidlib.analysis.core.timestream.Timestream property) Data (class in ccatkidlib.analysis.core.data) data_dir (ccatkidlib.rfsoc.rfsoc_daq.R attribute) data_path (ccatkidlib.analysis.core.data.Data attribute) DEBUG (ccatkidlib.log.Style attribute) DEFAULT (ccatkidlib.log.Style attribute) det_f (ccatkidlib.analysis.core.sweep.Sweep property) Detector (class in ccatkidlib.analysis.core.detector) detector_type (ccatkidlib.analysis.core.data.Data property)

dict_get() (in module ccatkidlib.utils) dict_set() (in module ccatkidlib.utils) diff() (ccatkidlib.analysis.core.data.Data method) drid (ccatkidlib.analysis.core.data.Data attribute) (ccatkidlib.analysis.core.detector.Detector attribute) drive_attens (ccatkidlib.rfsoc.rfsoc_daq.R attribute) drone drone_cfg (ccatkidlib.analysis.core.data.Data property) (ccatkidlib.rfsoc.rfsoc_daq.R attribute) drone_dir (ccatkidlib.rfsoc.rfsoc_daq.R attribute) drone_list (ccatkidlib.rfsoc.rfsoc_daq.R attribute) drone_num (ccatkidlib.rfsoc.rfsoc_daq.R attribute) dt() (ccatkidlib.analysis.core.timestream.Timestream method)

E

edit_config() (in module ccatkidlib.io) end (ccatkidlib.analysis.core.timestream.Timestream attribute) ERROR (ccatkidlib.log.Style attribute)

estpara3() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) ext_cfg (ccatkidlib.analysis.core.data.Data property) (ccatkidlib.rfsoc.rfsoc_daq.R attribute)

F

f() (ccatkidlib.analysis.core.sweep.Sweep method) fft() (ccatkidlib.analysis.core.timestream.Timestream method) fft_plot() (ccatkidlib.analysis.core.timestream.Timestream method) fig_dir (ccatkidlib.analysis.core.data.Data property) (ccatkidlib.analysis.core.detector.Detector property) (ccatkidlib.analysis.core.network.Network property) filter_det_f() (ccatkidlib.analysis.core.vna.VNA method) (in module ccatkidlib.analysis.core.vna) find_a_extrapolatev2() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) find_best_adrv() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) find_best_adrv_extrapolate() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) find_best_adrv_tone_amp() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) find_detectors() (ccatkidlib.rfsoc.rfsoc_daq.R method) find_first_zerocrossing1d() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) find_nearest_indice() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) findcabledelay() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils)

fit_cable_delay() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) fit_dir (ccatkidlib.analysis.core.detector.Detector property) fit_single_res() (in module ccatkidlib.analysis.fit.kid_phase_fit.phase_fit) fit_target_sweep() (in module ccatkidlib.analysis.fit.kid_phase_fit.phase_fit) fitphase2() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) fitphasenlin_c2() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) fitphasenlintest2() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) fitphasetest() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) fits21sim() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) fits21simnlin() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) FOOTER (ccatkidlib.log.Style attribute) FPGA fphaselin() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) fphasenlin() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) fphasenlin2() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) frac_f() (ccatkidlib.analysis.core.detector.Detector method) function_timer() (in module ccatkidlib.log)

G

g3_dir (ccatkidlib.rfsoc.rfsoc_daq.R attribute) get_ADC_rms() (ccatkidlib.rfsoc.rfsoc_daq.R method) get_array() (in module ccatkidlib.io) get_array_board() (in module ccatkidlib.io) get_atten() (ccatkidlib.rfsoc.rfsoc_daq.R method) get_avail_space() (ccatkidlib.rfsoc.rfsoc_daq.R method) get_com_to() (in module ccatkidlib.rfsoc.arg_utils) get_config() (in module ccatkidlib.analysis.utils.pair) get_connection() (in module ccatkidlib.io) get_creation_time() (in module ccatkidlib.io) get_data() (ccatkidlib.analysis.core.data.Data method) get_data_file() (in module ccatkidlib.analysis.utils.pair) get_dip_depth() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils)

get_drone_args() (in module ccatkidlib.rfsoc.arg_utils) get_most_recent_file() (in module ccatkidlib.io) get_most_recent_file_board() (in module ccatkidlib.io) get_prefix() (ccatkidlib.analysis.core.data.Data method) get_properties() (ccatkidlib.analysis.core.detector.Detector method) (in module ccatkidlib.analysis.utils.dataframe) get_sess_dir() (in module ccatkidlib.analysis.utils.pair) get_stats() (ccatkidlib.rfsoc.rfsoc_daq.R method) get_sweep() (in module ccatkidlib.analysis.utils.pair) get_temps() (ccatkidlib.rfsoc.rfsoc_daq.R method) get_timestamp() (in module ccatkidlib.io) get_utc() (ccatkidlib.rfsoc.rfsoc_timestream.Streamer method) group_args() (in module ccatkidlib.rfsoc.arg_utils) guess_tone_drive_atten() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils)

H

HEADER (ccatkidlib.log.Style attribute)

header() (in module ccatkidlib.log)

I

I() (ccatkidlib.analysis.core.data.Data method) increment_file() (in module ccatkidlib.io) INFO (ccatkidlib.log.Style attribute) init_circle_fit() (in module ccatkidlib.analysis.fit.fit) INVERT (ccatkidlib.log.Style attribute) io_cfg (ccatkidlib.analysis.core.data.Data property) (ccatkidlib.rfsoc.rfsoc_daq.R attribute) IQ_circle_center() (ccatkidlib.analysis.core.detector.Detector method) IQ_circle_fit() (ccatkidlib.analysis.core.detector.Detector method) IQ_circle_real() (ccatkidlib.analysis.core.detector.Detector method) IQ_circle_rotate() (ccatkidlib.analysis.core.detector.Detector method) IQ_max_dist() (ccatkidlib.analysis.core.detector.Detector method)

IQ_noise() (ccatkidlib.analysis.core.detector.Detector method) IQ_norm() (ccatkidlib.analysis.core.detector.Detector method) IQ_plot() (ccatkidlib.analysis.core.sweep.Sweep method) (ccatkidlib.analysis.core.timestream.Timestream method) IQ_rotate() (ccatkidlib.analysis.core.data.Data method) IQ_scale() (ccatkidlib.analysis.core.data.Data method) IQ_shift() (ccatkidlib.analysis.core.data.Data method) IQ_trim() (ccatkidlib.analysis.core.data.Data method) (ccatkidlib.analysis.core.detector.Detector method) IQ_unwind() (ccatkidlib.analysis.core.detector.Detector method) is_bifurcated() (ccatkidlib.analysis.core.detector.Detector method) ITALICS (ccatkidlib.log.Style attribute)

J

join() (ccatkidlib.analysis.core.data.Data method) (ccatkidlib.analysis.core.detector.Detector method) (ccatkidlib.analysis.core.target.Target method) (ccatkidlib.analysis.core.timestream.Timestream method)

K

KID

L

linear_fit() (in module ccatkidlib.analysis.fit.fit) LiveDetector (class in ccatkidlib.scripts.live_plot.live_detector) LiveTimestream (class in ccatkidlib.scripts.live_plot.live_detector) load_config() (in module ccatkidlib.io) load_frame() (ccatkidlib.analysis.core.timestream.Timestream method) (in module ccatkidlib.scripts.live_plot.live_utils)

log() (in module ccatkidlib.log) log_dir (ccatkidlib.rfsoc.rfsoc_daq.R attribute) logmag() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) LONGEST_DESC (ccatkidlib.log.Style attribute)

M

mag() (ccatkidlib.analysis.core.data.Data method) mag_min() (ccatkidlib.analysis.core.detector.Detector method) mag_plot() (ccatkidlib.analysis.core.sweep.Sweep method) (ccatkidlib.analysis.core.timestream.Timestream method) magS21() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) measurement_desc (ccatkidlib.rfsoc.rfsoc_daq.R attribute) measurement_name (ccatkidlib.rfsoc.rfsoc_daq.R attribute) method_timer() (in module ccatkidlib.log) module ccatkidlib ccatkidlib.analysis ccatkidlib.analysis.core ccatkidlib.analysis.core.data ccatkidlib.analysis.core.detector ccatkidlib.analysis.core.network ccatkidlib.analysis.core.sweep ccatkidlib.analysis.core.target ccatkidlib.analysis.core.timestream ccatkidlib.analysis.core.vna ccatkidlib.analysis.fit ccatkidlib.analysis.fit.fit ccatkidlib.analysis.fit.kid_phase_fit ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det ccatkidlib.analysis.fit.kid_phase_fit.phase_fit ccatkidlib.analysis.fit.kid_phase_fit.utils ccatkidlib.analysis.utils ccatkidlib.analysis.utils.dataframe ccatkidlib.analysis.utils.multiprocess ccatkidlib.analysis.utils.pair ccatkidlib.analysis.utils.pickle ccatkidlib.analysis.viz ccatkidlib.analysis.viz.viz_utils ccatkidlib.io ccatkidlib.log ccatkidlib.rfsoc ccatkidlib.rfsoc.arg_utils ccatkidlib.rfsoc.rfsoc_daq ccatkidlib.rfsoc.rfsoc_timestream ccatkidlib.scripts ccatkidlib.scripts.live_plot ccatkidlib.scripts.live_plot.live_detector ccatkidlib.scripts.live_plot.live_utils ccatkidlib.utils

multi_dump() (in module ccatkidlib.analysis.utils.pickle) multi_load() (in module ccatkidlib.analysis.utils.pickle)

N

NCLOs (ccatkidlib.rfsoc.rfsoc_daq.R attribute) network (ccatkidlib.analysis.core.data.Data property)

Network (class in ccatkidlib.analysis.core.network) nsphere_fit_test() (ccatkidlib.analysis.fit.kid_phase_fit.utils.Circlefit method) num_tones (ccatkidlib.analysis.core.data.Data property)

O

OCS	optional_executor() (in module ccatkidlib.analysis.utils.multiprocess)

P

package_results() (in module ccatkidlib.analysis.utils.multiprocess) packet_counts (ccatkidlib.analysis.core.timestream.Timestream attribute) padding (ccatkidlib.analysis.core.data.Data attribute) parallel_boards (ccatkidlib.rfsoc.rfsoc_daq.R attribute) parallel_drones (ccatkidlib.rfsoc.rfsoc_daq.R attribute) parse_args() (in module ccatkidlib.rfsoc.arg_utils) parse_packets() (ccatkidlib.rfsoc.rfsoc_timestream.Streamer method) parse_tones() (in module ccatkidlib.analysis.utils.dataframe) path_exists() (in module ccatkidlib.io) PCS (ccatkidlib.log.Style attribute) phase() (ccatkidlib.analysis.core.data.Data method) phase2() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) phase_fit() (ccatkidlib.analysis.core.detector.Detector method) (in module ccatkidlib.analysis.fit.fit) phase_plot() (ccatkidlib.analysis.core.sweep.Sweep method) (ccatkidlib.analysis.core.timestream.Timestream method) phase_spline() (ccatkidlib.analysis.core.detector.Detector method) phase_to_f() (ccatkidlib.analysis.core.detector.Detector method) pickle_dir (ccatkidlib.analysis.core.data.Data property) (ccatkidlib.analysis.core.detector.Detector property) (ccatkidlib.analysis.core.network.Network property)

plot() (ccatkidlib.analysis.core.network.Network method) (ccatkidlib.analysis.core.sweep.Sweep method) (ccatkidlib.analysis.core.timestream.Timestream method) (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) plot_summary_for_index() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) plotComplexPlane() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) plotPolar() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) process_batches() (in module ccatkidlib.analysis.utils.multiprocess) properties (ccatkidlib.analysis.core.detector.Detector attribute) (ccatkidlib.analysis.core.detector.Detector property) (ccatkidlib.analysis.core.target.Target property) (ccatkidlib.analysis.core.timestream.Timestream attribute) (ccatkidlib.analysis.core.timestream.Timestream property) properties_histogram() (ccatkidlib.analysis.core.detector.Detector method) properties_histogram_plot() (ccatkidlib.analysis.core.detector.Detector method) psd() (ccatkidlib.analysis.core.timestream.Timestream method) psd_plot() (ccatkidlib.analysis.core.timestream.Timestream method)

Q

Q() (ccatkidlib.analysis.core.data.Data method)

R

R (class in ccatkidlib.rfsoc.rfsoc_daq) read_timestream() (in module ccatkidlib.scripts.live_plot.live_utils) removecable() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) replace_root() (in module ccatkidlib.analysis.utils.pair)

rescaleCircle() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) ResonanceFitterSingleTone (class in ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det) RFSoC rfsoc (ccatkidlib.rfsoc.rfsoc_daq.R attribute) rotateCircle() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method)

S

sampling_freq (ccatkidlib.analysis.core.timestream.Timestream attribute) (ccatkidlib.analysis.core.timestream.Timestream property) save_array_board() (in module ccatkidlib.io) save_cfg (ccatkidlib.rfsoc.rfsoc_daq.R attribute) save_config() (in module ccatkidlib.io) save_data (ccatkidlib.rfsoc.rfsoc_daq.R attribute) save_fig() (in module ccatkidlib.analysis.viz.viz_utils) savgol() (ccatkidlib.analysis.core.data.Data method) sense_attens (ccatkidlib.rfsoc.rfsoc_daq.R attribute) sess_id (ccatkidlib.rfsoc.rfsoc_daq.R attribute) set_atten() (ccatkidlib.rfsoc.rfsoc_daq.R method) set_drone_args() (in module ccatkidlib.rfsoc.arg_utils) set_NCLO() (ccatkidlib.rfsoc.rfsoc_daq.R method) setup_boards() (ccatkidlib.rfsoc.rfsoc_daq.R method)

setup_drones() (ccatkidlib.rfsoc.rfsoc_daq.R method) setup_logging() (in module ccatkidlib.log) smoothdata2() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) start (ccatkidlib.analysis.core.timestream.Timestream attribute) stitch_mag() (ccatkidlib.analysis.core.vna.VNA method) stitch_phase() (ccatkidlib.analysis.core.vna.VNA method) stream (ccatkidlib.analysis.core.detector.Detector attribute) stream_plot() (ccatkidlib.analysis.core.timestream.Timestream method) streamer (ccatkidlib.rfsoc.rfsoc_daq.R attribute) Streamer (class in ccatkidlib.rfsoc.rfsoc_timestream) struct_batches() (in module ccatkidlib.analysis.utils.multiprocess) Style (class in ccatkidlib.log) style_level() (ccatkidlib.log.Style method) style_name() (ccatkidlib.log.Style method) Sweep (class in ccatkidlib.analysis.core.sweep)

T

t() (ccatkidlib.analysis.core.timestream.Timestream method) take_target_sweep() (ccatkidlib.rfsoc.rfsoc_daq.R method) take_timestream() (ccatkidlib.rfsoc.rfsoc_daq.R method) (ccatkidlib.rfsoc.rfsoc_timestream.Streamer method) take_vna_sweep() (ccatkidlib.rfsoc.rfsoc_daq.R method) targ (ccatkidlib.analysis.core.detector.Detector attribute) targ_dirs (ccatkidlib.rfsoc.rfsoc_daq.R attribute) Target (class in ccatkidlib.analysis.core.target) TIMER (ccatkidlib.log.Style attribute) timestamp (ccatkidlib.analysis.core.data.Data attribute) (ccatkidlib.rfsoc.rfsoc_daq.R attribute)

Timestream (class in ccatkidlib.analysis.core.timestream) timestream_dirs (ccatkidlib.rfsoc.rfsoc_daq.R attribute) tmp_data_dir (ccatkidlib.rfsoc.rfsoc_daq.R attribute) tmp_dir (ccatkidlib.rfsoc.rfsoc_daq.R attribute) tone tones (ccatkidlib.analysis.core.data.Data attribute) (ccatkidlib.analysis.core.detector.Detector attribute) (ccatkidlib.analysis.core.timestream.Timestream attribute) transform() (ccatkidlib.analysis.core.data.Data method) trimdata() (in module ccatkidlib.analysis.fit.kid_phase_fit.utils) tune_tone_placement() (ccatkidlib.rfsoc.rfsoc_daq.R method) tune_tone_power() (ccatkidlib.rfsoc.rfsoc_daq.R method)

U

unpivot() (ccatkidlib.analysis.core.data.Data method)

V

viz_cfg (ccatkidlib.analysis.core.data.Data attribute) (ccatkidlib.analysis.core.detector.Detector attribute) VNA

vna (ccatkidlib.analysis.core.detector.Detector attribute) VNA (class in ccatkidlib.analysis.core.vna) vna_dirs (ccatkidlib.rfsoc.rfsoc_daq.R attribute)

W

WAIT (ccatkidlib.log.Style attribute) wait() (in module ccatkidlib.log) WARNING (ccatkidlib.log.Style attribute)

windowgauss() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) windowlorentz() (ccatkidlib.analysis.fit.kid_phase_fit.fit_single_det.ResonanceFitterSingleTone method) write_config_comb() (ccatkidlib.rfsoc.rfsoc_daq.R method)

Y

y_to_x_interp() (in module ccatkidlib.analysis.fit.fit)

y_to_x_spline() (in module ccatkidlib.analysis.fit.fit)