lcheapo

lcheapo

Viewing and modifying LCHEAPO OBS data

Overview

Command-line programs

Type {command} -h to get a list of parameters and options

Programs that don't modify files

Program	description
lcdump	dump raw information from LCHEAPO files
lcinfo	return basic information about an LCHEAPO file
lcplot	plot an LCHEAPO file
lctest	plot LCHEAPO tests
lc_examples	create a directory with examples of lcplot and lctest

Programs that modify files

These programs use the SDPCHAIN protocols for FAIR- compliant data:

• Create/append to a process-steps.json file
• Read from input directory (-i) and output to (-o)

Program	description
lccut	extract section of an LCHEAPO file
lcfix	fix common bugs in an LCHEAPO file
lcheader	create an LCHEAPO header + directory
sdpcat	concatenate data files
sdpstep	run a command line tool and save info to process-steps file
lc2ms_weak	converts LCHEAPO file to basic miniSEED files
lc2SDS_weak	converts LCHEAPO file to SeisComp Data Structure, with basic drift correction

lctest control files

lctest uses YAML-format control files to indicate what kind of plots to output. The datetime ranges in the plots sections must be within those given in the input section, as data is only read using the input time bounds.

for details on the control file format, type:

  python
    > import lcheapo
    > help(lcheapo.lctest)

to put example lctest control files in the current directory, type:

    lctest --examples

Example plots

Examples

1: Analysing one station

---
input: 
    start_time: "2022-02-22T10:00:01"
    end_time: "2022-02-25T15:25:25"
    datafiles:
        -   name: "TestAcq-BB02-ProgV1-3.raw.lch"
            obs_type: 'BBOBS1'
            station: 'TEST'
    description: "Tests on BBOBS"
output:
    show: True
    filebase: 'BB02-V1_3-tests'
plot_globals:
    spectra:
        window_length.s: 1024
plots:
    time_series:
        -   description: "Entire time series"
            select: {station: "*"}
            start_time: "2022-02-22T10:00:01"
            end_time: "2022-02-25T15:25:25"
        -   description: "Quiet time"
            select: {station: "*"}
            start_time: "2022-02-23T21:00:00"
            end_time: "2022-02-24T03:00:00"
        -   description: "Stack time"
            select: {station: "*"}
            start_time: "2022-02-25T13:54:00"
            end_time: "2022-02-25T14:03:00"
    spectra:
        -   description: "Quiet time"
            select: {station: "*"}
            start_time: "2022-02-23T21:00:00"
            end_time: "2022-02-24T03:00:00"
    stack:
        -   description: "Stack, Jump South"
            orientation_codes: ["Z"]
            offset_before.s: 0.3
            offset_after.s: 1
            times:
            -    "2022-02-25T13:57:00.66"
            -    "2022-02-25T13:58:00.53"
            -    "2022-02-25T13:59:00.2"
        -   description: "Stack, Jump Est"
            orientation_codes: ["Z"]
            offset_before.s: 0.3
            offset_after.s: 1
            times:
            -    "2022-02-25T14:00:00.4"
            -    "2022-02-25T14:01:00.15"
            -    "2022-02-25T14:02:00.18"
    particle_motion:
        -   description: "Stack, Jump South"
            orientation_code_x: "2"
            orientation_code_y: "1"
            offset_before.s: 0.00
            offset_after.s: 0.03
            offset_before_ts.s: 0.2
            offset_after_ts.s: 1
            times:
            -    "2022-02-25T13:57:00.66"
            -    "2022-02-25T13:58:00.53"
            -    "2022-02-25T13:59:00.2"
        -   description: "Stack, Jump Est"
            orientation_code_x: "2"
            orientation_code_y: "1"
            offset_before.s: 0.1
            offset_after.s: 0.2
            offset_before_ts.s: 0.3
            offset_after_ts.s: 1
            times:
            -    "2022-02-25T14:00:00.4"
            -    "2022-02-25T14:01:00.15"
            -    "2022-02-25T14:02:00.18"

Output plots

time_series

spectra

stack

particle_motion

2: Comparing several stations

---
input:
    start_time: null
    end_time: null
    datafiles:
        - 
            name: "20191107T14_SPOBS09_F02.raw.lch"
            obs_type: "SPOBS2"
            station: "09F2"
        - 
            name: "20191107T14_SPOBS09_F02.raw.lch"
            obs_type: "SPOBS2"
            station: "09c1"
        - 
            name: "20191107T14_SPOBS09_F02.raw.lch"
            obs_type: "SPOBS2"
            station: "09c2"
    description: "Simulation of multi-instrument test"
output:
    show: True
    filebase: "MAYOBS6"
plot_globals:
    stack:
        offset_before.s: 0.5
        offset_after.s:  1.5
        plot_span: False
    particle_motion:
        offset_before.s: 0.00
        offset_after.s: 0.03
        offset_before_ts.s: 0.1
        offset_after_ts.s: 0.2
    spectra:
        window_length.s: 100
plots:
    time_series:
        -
            description: "Entire time series"
            select: {station: "*"}
            start_time: null
            end_time: null
        -
            description: "Quiet period"
            select: {channel: "*3"}
            start_time: null
            end_time: "2019-11-07T13:57"
        -
            description: "Rubber hammer taps"
            select: {station: "*"}
            start_time: "2019-11-07T14:08"
            end_time: "2019-11-07T14:11:10"
    spectra:
        -
            description: "Entire time series"
            select: {component: "3"}
            start_time: null
            end_time: null
        -
            description: "Quiet period"
            select: {channel: "*3"}
            start_time: null
            end_time: "2019-11-07T13:57"