A Python package develop for transportation spatio-temporal big data processing, analysis and visualization.

Overview

English 中文版

TransBigData

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Introduction

TransBigData is a Python package developed for transportation spatio-temporal big data processing, analysis and visualization. TransBigData provides fast and concise methods for processing common transportation spatio-temporal big data such as Taxi GPS data, bicycle sharing data and bus GPS data. TransBigData provides a variety of processing methods for each stage of transportation spatio-temporal big data analysis. The code with TransBigData is clean, efficient, flexible, and easy to use, allowing complex data tasks to be achieved with concise code.

For some specific types of data, TransBigData also provides targeted tools for specific needs, such as extraction of Origin and Destination(OD) of taxi trips from taxi GPS data and identification of arrival and departure information from bus GPS data. The latest stable release of the software can be installed via pip and full documentation can be found at https://transbigdata.readthedocs.io/en/latest/. Introduction PPT can be found here and here(in Chinese)

Target Audience

The target audience of TransBigData includes:

  • Data science researchers and data engineers in the field of transportation big data, smart transportation systems, and urban computing, particularly those who want to integrate innovative algorithms into intelligent trasnportation systems
  • Government, enterprises, or other entities who expect efficient and reliable management decision support through transportation spatio-temporal data analysis.

Technical Features

  • Provide a variety of processing methods for each stage of transportation spatio-temporal big data analysis.
  • The code with TransBigData is clean, efficient, flexible, and easy to use, allowing complex data tasks to be achieved with concise code.

Main Functions

Currently, TransBigData mainly provides the following methods:

  • Data Quality: Provides methods to quickly obtain the general information of the dataset, including the data amount the time period and the sampling interval.
  • Data Preprocess: Provides methods to clean multiple types of data error.
  • Data Gridding: Provides methods to generate multiple types of geographic grids (Rectangular grids, Hexagonal grids) in the research area. Provides fast algorithms to map GPS data to the generated grids.
  • Data Aggregating: Provides methods to aggregate GPS data and OD data into geographic polygon.
  • Data Visualization: Built-in visualization capabilities leverage the visualization package keplergl to interactively visualize data on Jupyter notebook with simple code.
  • Trajectory Processing: Provides methods to process trajectory data, including generating trajectory linestring from GPS points, and trajectory densification, etc.
  • Basemap Loading: Provides methods to display Mapbox basemap on matplotlib figures

Installation

It is recommended to use Python 3.7, 3.8, 3.9

Using pypi PyPI version

TransBigData can be installed by using pip install. Before installing TransBigData, make sure that you have installed the available geopandas package. If you already have geopandas installed, run the following code directly from the command prompt to install TransBigData:

pip install transbigdata

Using conda-forge Conda Version Conda Downloads

You can also install TransBigData by conda-forge, this will automaticaly solve the dependency, it can be installed with:

conda install -c conda-forge transbigdata

Contributing to TransBigData GitHub contributors Join the chat at https://gitter.im/transbigdata/community GitHub commit activity

All contributions, bug reports, bug fixes, documentation improvements, enhancements and ideas are welcome. A detailed overview on how to contribute can be found in the contributing guide on GitHub.

Examples

Example of data visualization

Visualize trajectories (with keplergl)

gif

Visualize data distribution (with keplergl)

gif

Visualize OD (with keplergl)

gif

Example of taxi GPS data processing

The following example shows how to use the TransBigData to perform data gridding, data aggregating and data visualization for taxi GPS data.

Read the data

import transbigdata as tbd
import pandas as pd
#Read taxi gps data  
data = pd.read_csv('TaxiData-Sample.csv',header = None) 
data.columns = ['VehicleNum','time','lon','lat','OpenStatus','Speed'] 
data
VehicleNum time lon lat OpenStatus Speed
0 34745 20:27:43 113.806847 22.623249 1 27
1 34745 20:24:07 113.809898 22.627399 0 0
2 34745 20:24:27 113.809898 22.627399 0 0
3 34745 20:22:07 113.811348 22.628067 0 0
4 34745 20:10:06 113.819885 22.647800 0 54
... ... ... ... ... ... ...
544994 28265 21:35:13 114.321503 22.709499 0 18
544995 28265 09:08:02 114.322701 22.681700 0 0
544996 28265 09:14:31 114.336700 22.690100 0 0
544997 28265 21:19:12 114.352600 22.728399 0 0
544998 28265 19:08:06 114.137703 22.621700 0 0

544999 rows × 6 columns

Data pre-processing

Define the study area and use the tbd.clean_outofbounds method to delete the data out of the study area

#Define the study area
bounds = [113.75, 22.4, 114.62, 22.86]
#Delete the data out of the study area
data = tbd.clean_outofbounds(data,bounds = bounds,col = ['lon','lat'])

Data gridding

The most basic way to express the data distribution is in the form of geograpic grids. TransBigData provides methods to generate multiple types of geographic grids (Rectangular grids, Hexagonal grids) in the research area. For rectangular gridding, you need to determine the gridding parameters at first (which can be interpreted as defining a grid coordinate system):

#Obtain the gridding parameters
params = tbd.area_to_params(bounds,accuracy = 1000)
params

{'slon': 113.75, 'slat': 22.4, 'deltalon': 0.00974336289289822, 'deltalat': 0.008993210412845813, 'theta': 0, 'method': 'rect', 'gridsize': 1000}

The gridding parameters store the information of the initial position, the size and the angle of the gridding system.

The next step is to map the GPS data to their corresponding grids. Using the tbd.GPS_to_grid, it will generate the LONCOL column and the LATCOL column (Rectangular grids). The two columns together can specify a grid:

#Map the GPS data to grids
data['LONCOL'],data['LATCOL'] = tbd.GPS_to_grid(data['lon'],data['lat'],params)

Count the amount of data in each grids, generate the geometry of the grids and transform it into a GeoDataFrame:

#Aggregate data into grids
grid_agg = data.groupby(['LONCOL','LATCOL'])['VehicleNum'].count().reset_index()
#Generate grid geometry
grid_agg['geometry'] = tbd.grid_to_polygon([grid_agg['LONCOL'],grid_agg['LATCOL']],params)
#Change the type into GeoDataFrame
import geopandas as gpd
grid_agg = gpd.GeoDataFrame(grid_agg)
#Plot the grids
grid_agg.plot(column = 'VehicleNum',cmap = 'autumn_r')

png

Triangle and Hexagon grids & rotation angle

TransBigData also support the triangle and hexagon grids. It also supports given rotation angle for the grids. We can alter the gridding parameter:

#set to the hexagon grids
params['method'] = 'hexa'
#or set as triangle grids: params['method'] = 'tri'
#set a rotation angle (degree)
params['theta'] = 5

Then we can do the GPS data matching again:

#Triangle and Hexagon grids requires three columns to store ID
data['loncol_1'],data['loncol_2'],data['loncol_3'] = tbd.GPS_to_grid(data['lon'],data['lat'],params)
#Aggregate data into grids
grid_agg = data.groupby(['loncol_1','loncol_2','loncol_3'])['VehicleNum'].count().reset_index()
#Generate grid geometry
grid_agg['geometry'] = tbd.grid_to_polygon([grid_agg['loncol_1'],grid_agg['loncol_2'],grid_agg['loncol_3']],params)
#Change the type into GeoDataFrame
import geopandas as gpd
grid_agg = gpd.GeoDataFrame(grid_agg)
#Plot the grids
grid_agg.plot(column = 'VehicleNum',cmap = 'autumn_r')

1648714436503.png

Data Visualization(with basemap)

For a geographical data visualization figure, we still have to add the basemap, the colorbar, the compass and the scale. Use tbd.plot_map to load the basemap and tbd.plotscale to add compass and scale in matplotlib figure:

import matplotlib.pyplot as plt
fig =plt.figure(1,(8,8),dpi=300)
ax =plt.subplot(111)
plt.sca(ax)
#Load basemap
tbd.plot_map(plt,bounds,zoom = 11,style = 4)
#Define colorbar
cax = plt.axes([0.05, 0.33, 0.02, 0.3])
plt.title('Data count')
plt.sca(ax)
#Plot the data
grid_agg.plot(column = 'VehicleNum',cmap = 'autumn_r',ax = ax,cax = cax,legend = True)
#Add scale
tbd.plotscale(ax,bounds = bounds,textsize = 10,compasssize = 1,accuracy = 2000,rect = [0.06,0.03],zorder = 10)
plt.axis('off')
plt.xlim(bounds[0],bounds[2])
plt.ylim(bounds[1],bounds[3])
plt.show()

1648714582961.png

Griding framework offered by TransBigData

Here is an overview of the gridding framework offered by TransBigData.

1648715064154.png

See This Example for further details.

Citation information DOI status

Please cite this when using TransBigData in your research. Citation information can be found at CITATION.cff.

Introducing Video (In Chinese) bilibili

Comments
  • [JOSS] Installation & Dependencies

    [JOSS] Installation & Dependencies

    In order to make it most clear for users to install geopandas, the link in README and the install docs should be: https://geopandas.org/en/stable/getting_started.html#installation

    Also, the following packages are used in the docs/tutorials and should be added to dependencies list:

    • CoordinatesConverter>=0.1.4
    • leuvenmapmatching
    • igraph (optional)
    • osmnx (optional)
    • plot_map
    • rtree
    • seaborn (optional)
    • shapely

    xref: openjournals/joss-reviews#4021

    opened by jGaboardi 7
  • mapbox图片不显示

    mapbox图片不显示

    mapbox mapbox1 ```

    Package Version


    appnope 0.1.2 argon2-cffi 21.1.0 attrs 21.2.0 backcall 0.2.0 bleach 4.1.0 blis 0.7.7 catalogue 2.0.7 certifi 2021.10.8 cffi 1.15.0 chardet 4.0.0 click 8.0.4 click-plugins 1.1.1 cligj 0.7.2 commonmark 0.9.1 cycler 0.11.0 cymem 2.0.6 d2l 0.17.3 debugpy 1.5.1 decorator 5.1.0 defusedxml 0.7.1 entrypoints 0.3 filelock 3.6.0 Fiona 1.8.21 geopandas 0.10.2 huggingface-hub 0.5.1 idna 2.10 ipykernel 6.4.2 ipython 7.29.0 ipython-genutils 0.2.0 ipywidgets 7.6.5 jedi 0.18.0 jellyfish 0.9.0 Jinja2 3.0.2 joblib 1.1.0 jsonschema 4.1.2 jupyter 1.0.0 jupyter-client 7.0.6 jupyter-console 6.4.0 jupyter-contrib-core 0.3.3 jupyter-contrib-nbextensions 0.5.1 jupyter-core 4.9.1 jupyter-highlight-selected-word 0.2.0 jupyter-latex-envs 1.4.6 jupyter-nbextensions-configurator 0.4.1 jupyterlab-pygments 0.1.2 jupyterlab-widgets 1.0.2 keplergl 0.3.2 keybert 0.5.1 kiwisolver 1.3.2 langcodes 3.3.0 lxml 4.8.0 mapclassify 2.4.3 MarkupSafe 2.0.1 matplotlib 3.3.3 matplotlib-inline 0.1.3 mistune 0.8.4 multi-rake 0.0.2 munch 2.5.0 murmurhash 1.0.6 nbclient 0.5.4 nbconvert 6.2.0 nbformat 5.1.3 nest-asyncio 1.5.1 networkx 2.8 nltk 3.7 notebook 6.4.5 numpy 1.18.5 packaging 21.2 pandas 1.2.2 pandocfilters 1.5.0 parso 0.8.2 pathy 0.6.1 pexpect 4.8.0 pickleshare 0.7.5 Pillow 8.4.0 pip 22.0.4 plot-map 0.3.7 preshed 3.0.6 prometheus-client 0.12.0 prompt-toolkit 3.0.21 ptyprocess 0.7.0 pycld2 0.41 pycparser 2.20 pydantic 1.8.2 pygeos 0.12.0 Pygments 2.10.0 pyparsing 2.4.7 pyproj 3.3.1 pyrsistent 0.18.0 python-dateutil 2.8.2 pytz 2021.3 PyYAML 6.0 pyzmq 22.3.0 qtconsole 5.1.1 QtPy 1.11.2 regex 2022.3.15 requests 2.25.1 rich 12.2.0 Rtree 1.0.0 sacremoses 0.0.49 scikit-learn 1.0.1 scipy 1.7.2 segtok 1.5.11 Send2Trash 1.8.0 sentence-transformers 2.2.0 sentencepiece 0.1.96 setuptools 56.0.0 Shapely 1.8.1.post1 six 1.16.0 sklearn 0.0 smart-open 5.2.1 spacy 3.2.4 spacy-legacy 3.0.9 spacy-loggers 1.0.2 srsly 2.4.2 summa 1.2.0 tabulate 0.8.9 terminado 0.12.1 testpath 0.5.0 thinc 8.0.15 threadpoolctl 3.0.0 tokenizers 0.12.1 torch 1.8.1 torchvision 0.9.1 tornado 6.1 tqdm 4.64.0 traitlets 5.1.1 traittypes 0.2.1 transbigdata 0.4.5 transformers 4.18.0 treelite 2.2.2 treelite-runtime 2.2.2 typer 0.4.1 typing_extensions 4.1.1 urllib3 1.26.8 wasabi 0.9.1 wcwidth 0.2.5 webencodings 0.5.1 widgetsnbextension 3.5.2 xgboost 1.5.2 yake 0.4.8

    opened by java2python 4
  • line, stop = tbd.getbusdata('深圳', ['2号线']) 报错:No such busline

    line, stop = tbd.getbusdata('深圳', ['2号线']) 报错:No such busline

    Describe the bug A clear and concise description of what the bug is.

    To Reproduce Steps to reproduce the behavior:

    1. Go to '...'
    2. Click on '....'
    3. Scroll down to '....'
    4. See error

    Expected behavior A clear and concise description of what you expected to happen.

    Screenshots If applicable, add screenshots to help explain your problem.

    Desktop (please complete the following information):

    • OS: [e.g. iOS]
    • Browser [e.g. chrome, safari]
    • Version [e.g. 22]

    Smartphone (please complete the following information):

    • Device: [e.g. iPhone6]
    • OS: [e.g. iOS8.1]
    • Browser [e.g. stock browser, safari]
    • Version [e.g. 22]

    Additional context Add any other context about the problem here.

    opened by MissChengLX 4
  • [JOSS] Missing dependencies after conda install

    [JOSS] Missing dependencies after conda install

    I followed the conda install instructions

    You can also install TransBigData by conda-forge, this will automaticaly solve the dependency, it can be installed with:

    conda install -c conda-forge transbigdata

    and it seems that not all dependencies are resolved because I get

    ModuleNotFoundError: No module named 'scipy'

    image

    xref: openjournals/joss-reviews#4021

    opened by anitagraser 4
  • [JOSS] moving pandas citation

    [JOSS] moving pandas citation

    I seem to have made in mistake (618f7c8e5d5aecdc3e4dce08d0b3e6a5d3ddc366) in the MovingPandas citation that omits the journal title (see line 100 here).

    opened by jGaboardi 4
  • Example 1-Taxi GPS data processing 运行失败

    Example 1-Taxi GPS data processing 运行失败

    运行到5大步骤: Aggregate OD into polygons 出错

    # Aggragate OD data to polygons 
    # without passing gridding parameters, the algorithm will map the data 
    # to polygons directly using their coordinates
    od_gdf = tbd.odagg_shape(oddata, sz, round_accuracy=6)
    fig = plt.figure(1, (16, 6), dpi=150) # 确定图形高为6,宽为8;图形清晰度
    ax1 = plt.subplot(111)
    od_gdf.plot(ax=ax1, column='count')
    plt.xticks([], fontsize=10)
    plt.yticks([], fontsize=10)
    plt.title('OD Trips', fontsize=12);
    

    报错信息: ImportError: Spatial indexes require either rtree or pygeos. See installation instructions at https://geopandas.org/install.html

    版本:

    Package                           Version
    --------------------------------- -----------
    appnope                           0.1.2
    argon2-cffi                       21.1.0
    attrs                             21.2.0
    backcall                          0.2.0
    bleach                            4.1.0
    blis                              0.7.7
    catalogue                         2.0.7
    certifi                           2021.10.8
    cffi                              1.15.0
    chardet                           4.0.0
    click                             8.0.4
    click-plugins                     1.1.1
    cligj                             0.7.2
    commonmark                        0.9.1
    cycler                            0.11.0
    cymem                             2.0.6
    d2l                               0.17.3
    debugpy                           1.5.1
    decorator                         5.1.0
    defusedxml                        0.7.1
    entrypoints                       0.3
    filelock                          3.6.0
    Fiona                             1.8.21
    geopandas                         0.10.2
    huggingface-hub                   0.5.1
    idna                              2.10
    ipykernel                         6.4.2
    ipython                           7.29.0
    ipython-genutils                  0.2.0
    ipywidgets                        7.6.5
    jedi                              0.18.0
    jellyfish                         0.9.0
    Jinja2                            3.0.2
    joblib                            1.1.0
    jsonschema                        4.1.2
    jupyter                           1.0.0
    jupyter-client                    7.0.6
    jupyter-console                   6.4.0
    jupyter-contrib-core              0.3.3
    jupyter-contrib-nbextensions      0.5.1
    jupyter-core                      4.9.1
    jupyter-highlight-selected-word   0.2.0
    jupyter-latex-envs                1.4.6
    jupyter-nbextensions-configurator 0.4.1
    jupyterlab-pygments               0.1.2
    jupyterlab-widgets                1.0.2
    keplergl                          0.3.2
    keybert                           0.5.1
    kiwisolver                        1.3.2
    langcodes                         3.3.0
    lxml                              4.8.0
    mapclassify                       2.4.3
    MarkupSafe                        2.0.1
    matplotlib                        3.3.3
    matplotlib-inline                 0.1.3
    mistune                           0.8.4
    multi-rake                        0.0.2
    munch                             2.5.0
    murmurhash                        1.0.6
    nbclient                          0.5.4
    nbconvert                         6.2.0
    nbformat                          5.1.3
    nest-asyncio                      1.5.1
    networkx                          2.8
    nltk                              3.7
    notebook                          6.4.5
    numpy                             1.18.5
    packaging                         21.2
    pandas                            1.2.2
    pandocfilters                     1.5.0
    parso                             0.8.2
    pathy                             0.6.1
    pexpect                           4.8.0
    pickleshare                       0.7.5
    Pillow                            8.4.0
    pip                               22.0.4
    plot-map                          0.3.7
    preshed                           3.0.6
    prometheus-client                 0.12.0
    prompt-toolkit                    3.0.21
    ptyprocess                        0.7.0
    pycld2                            0.41
    pycparser                         2.20
    pydantic                          1.8.2
    Pygments                          2.10.0
    pyparsing                         2.4.7
    pyproj                            3.3.1
    pyrsistent                        0.18.0
    python-dateutil                   2.8.2
    pytz                              2021.3
    PyYAML                            6.0
    pyzmq                             22.3.0
    qtconsole                         5.1.1
    QtPy                              1.11.2
    regex                             2022.3.15
    requests                          2.25.1
    rich                              12.2.0
    sacremoses                        0.0.49
    scikit-learn                      1.0.1
    scipy                             1.7.2
    segtok                            1.5.11
    Send2Trash                        1.8.0
    sentence-transformers             2.2.0
    sentencepiece                     0.1.96
    setuptools                        56.0.0
    Shapely                           1.8.1.post1
    six                               1.16.0
    sklearn                           0.0
    smart-open                        5.2.1
    spacy                             3.2.4
    spacy-legacy                      3.0.9
    spacy-loggers                     1.0.2
    srsly                             2.4.2
    summa                             1.2.0
    tabulate                          0.8.9
    terminado                         0.12.1
    testpath                          0.5.0
    thinc                             8.0.15
    threadpoolctl                     3.0.0
    tokenizers                        0.12.1
    torch                             1.8.1
    torchvision                       0.9.1
    tornado                           6.1
    tqdm                              4.64.0
    traitlets                         5.1.1
    traittypes                        0.2.1
    transbigdata                      0.4.5
    transformers                      4.18.0
    treelite                          2.2.2
    treelite-runtime                  2.2.2
    typer                             0.4.1
    typing_extensions                 4.1.1
    urllib3                           1.26.8
    wasabi                            0.9.1
    wcwidth                           0.2.5
    webencodings                      0.5.1
    widgetsnbextension                3.5.2
    xgboost                           1.5.2
    yake                              0.4.8
    
    opened by java2python 3
  • [JOSS] Language of status and error messages

    [JOSS] Language of status and error messages

    I've been going through Example 1-Taxi GPS data processing.ipynb and found that some messages are in Chinese:

    image

    image

    Considering a potentially global user base, I think the messages should be in English.

    xref: openjournals/joss-reviews#4021

    opened by anitagraser 3
  • FileNotFindError in plotmap.py

    FileNotFindError in plotmap.py

    There were some problems when I was trying to set imgsavepath, it seems like “filepath = searchfile('mapboxtoken.txt')” in line 68 doesn't work. when I typing the following code in my jupyternotebook.

    import transbigdata as tbd tbd.set_imgsavepath(r'/home/liqi/CodeSpace/Map_tile/')

    I don't know if it was caused by miniconda virtual environment or something else.

    Screenshots image

    • OS: Ubuntu20.04LTS
    opened by liq77 2
  • Update README (and docs?)

    Update README (and docs?)

    This PR provides several minor corrections in README.md. I wanted to make the same changes to the docs, but it seems they have to be made in transbigdata-docs-en repo?

    opened by jGaboardi 2
  • [JOSS] target audience?

    [JOSS] target audience?

    Regarding the Statement of Need, the docs and manuscript clearly state what problems are being solved, but there is no mentioned of who the target audience is.

    This should be added to:

    • the actual manuscript
    • README.md
    • the docs site

    For reference:

    • Documentation Do the authors clearly state what problems the software is designed to solve and who the target audience is?
    • Software paper Does the paper have a section titled 'Statement of Need' that clearly states what problems the software is designed to solve and who the target audience is?

    xref: openjournals/joss-reviews#4021

    opened by jGaboardi 2
  • [JOSS] State of the field?

    [JOSS] State of the field?

    Currently no other similar software packages are mentioned in the manuscript, which is a requirement. There should be an overview of comparable packages, even/especially if they are not written in Python. Further, if no other packages exist this should be mentioned.

    xref: this comment from @anitagraser.

    opened by jGaboardi 2
Releases(0.4.13)
  • 0.4.13(Sep 11, 2022)

    Improve plotmap:

    • Change the way of creating file path in plotmap to solve the error not reading local base map in some system environment.
    • Expose the read_imgsavepath and read_mapboxtoken function
    Source code(tar.gz)
    Source code(zip)
  • 0.4.12(Sep 8, 2022)

    • Improve the test coverage to 100%
    • Require the geopandas version 0.10.2 to avoid some potential errors
    • Support python 3.6 and 3.10
    • Add the timeout parameter in crawler.py
    • Use requests instead of urllib in data fetching
    Source code(tar.gz)
    Source code(zip)
  • 0.4.11(Jul 19, 2022)

  • 0.4.10(Jul 8, 2022)

    Update the mobile phone data processing function, See example for detail usage. Add functions:

    • transbigdata.mobile_stay_move: Input trajectory data and gridding parameters, identify stay and move.
    • transbigdata.mobile_stay_dutation: Input the stay point data to identify the duration during night and day time.
    • transbigdata.mobile_identify_home: Identify home location from mobile phone stay data. The rule is to identify the locations with longest duration in night time.
    • transbigdata.mobile_identify_work: Identify work location from mobile phone stay data. The rule is to identify the locations with longest duration in day time on weekdays(Average duration should over minhour).
    • transbigdata.mobile_plot_activity: Plot the activity plot of individual.
    Source code(tar.gz)
    Source code(zip)
  • 0.4.9(Jul 1, 2022)

    Update the metro model, add functions:

    • transbigdata.metro_network: create metro network
    • transbigdata.get_shortest_path: Obtain the shortest path with given OD
    • transbigdata.get_k_shortest_paths: Obtain the k shortest path with given OD
    • transbigdata.get_path_traveltime: Obtain the travel time of the path

    See example for detail usage: https://transbigdata.readthedocs.io/en/latest/gallery/Example%205-Modeling%20for%20subway%20network%20topology.html

    Source code(tar.gz)
    Source code(zip)
  • 0.4.8(May 21, 2022)

  • 0.4.7(Apr 25, 2022)

    The tbd.plot_map function is added OpenStreetMap as the style 0, which do not need access token any more. imgsavepath and access_token are not neccessarily required now.

    Source code(tar.gz)
    Source code(zip)
  • 0.4.6(Apr 25, 2022)

  • 0.4.5(Apr 20, 2022)

  • v0.4.4(Apr 15, 2022)

  • v0.4.1(Mar 27, 2022)

    Add the Triangle and hexagon gridding methods, the methods are vectorized and fast:

    • Triangle grids: GPS_to_grids_tri and gridid_to_polygon_tri
    • Hexagon grids: GPS_to_grids_hexa and gridid_to_polygon_hexa

    See Example for details.

    Source code(tar.gz)
    Source code(zip)
  • v0.3.12(Mar 25, 2022)

  • v0.3.11(Mar 17, 2022)

  • v0.3.10(Mar 16, 2022)

  • v0.3.9(Mar 6, 2022)

    Add two functions for isochrone download:

    • get_isochrone_mapbox: Obtain the isochrone from mapbox isochrone.
    • get_isochrone_amap: Obtain the isochrone from Amap isochrone.

    Grids are now support rotate with given angle:

    • grid params are now support the fifth parameter theta to represent the rotation angle.
    • GPS_to_grids,grids_centre,rect_grids,gridid_to_polygon,regenerate_params are rewrite to support grids with angle.
    Source code(tar.gz)
    Source code(zip)
  • v0.3.7(Feb 23, 2022)

  • v0.3.6(Feb 22, 2022)

    Add two functions:

    transbigdata.regenerate_params(grid): Regenerate gridding params from grid. transbigdata.grid_from_params(params,location): Generate grids from params and bounds or shape.

    Source code(tar.gz)
    Source code(zip)
  • v0.3.5(Feb 1, 2022)

    TransBigData v0.3.5 Integrate plot_map and CoordinatesConverter, it nolonger depends on these two packages. This is also the first version on conda-forge

    Source code(tar.gz)
    Source code(zip)
  • 0.3.3(Jan 28, 2022)

Owner
Qing Yu
Python, JavaScript, Spatio-temporal big data, Data visualization
Qing Yu
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