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JobTask

The JobTask class provides access to the result of a specific block in the workflow. Each job contains one or multiple JobTasks, one for each block.

Use an existing jobtask: 

jobtask = up42.initialize_jobtask(jobtask_id="3f772637-09aa-4164-bded-692fcd746d20",
                                  job_id="de5806aa-5ef1-4dc9-ab1d-06d7ec1a5021")

Attributes

info: dict property readonly

Gets the jobtask metadata information.

Methods

download_quicklooks(self, output_directory=None)

Downloads quicklooks of the job task to disk.

After download, can be plotted via jobtask.plot_quicklooks().

Parameters:

Name Type Description Default
output_directory Union[str, pathlib.Path]

The file output directory, defaults to the current working directory.

 None

Returns:

Type Description
List[str]

The quicklooks filepaths.
Source code in up42/jobtask.py 
def download_quicklooks(
    self,
    output_directory: Union[str, Path, None] = None,
) -> List[str]:
    """
    Downloads quicklooks of the job task to disk.

    After download, can be plotted via jobtask.plot_quicklooks().

    Args:
        output_directory: The file output directory, defaults to the current working
            directory.

    Returns:
        The quicklooks filepaths.
    """
    if output_directory is None:
        # On purpose downloading the quicklooks to the jobs folder and not the
        # jobtasks folder,since only relevant for data block task. And clearer
        # for job.download_quicklooks.
        output_directory = (
            Path.cwd() / f"project_{self.auth.project_id}" / f"job_{self.job_id}"
        )
    else:
        output_directory = Path(output_directory)
    output_directory.mkdir(parents=True, exist_ok=True)
    logger.info(f"Download directory: {str(output_directory)}")

    url = (
        f"{self.auth._endpoint()}/projects/{self.project_id}/jobs/{self.job_id}"
        f"/tasks/{self.jobtask_id}/outputs/quicklooks/"
    )
    response_json = self.auth._request(request_type="GET", url=url)
    quicklooks_ids = response_json["data"]

    out_paths: List[str] = []
    for ql_id in tqdm(quicklooks_ids):
        out_path = output_directory / f"quicklook_{ql_id}"  # No suffix required.
        out_paths.append(str(out_path))

        url = (
            f"{self.auth._endpoint()}/projects/{self.project_id}/jobs/{self.job_id}"
            f"/tasks/{self.jobtask_id}/outputs/quicklooks/{ql_id}"
        )
        response = self.auth._request(
            request_type="GET", url=url, return_text=False
        )

        with open(out_path, "wb") as dst:
            for chunk in response:
                dst.write(chunk)

    self.quicklooks = out_paths  # pylint: disable=attribute-defined-outside-init
    return out_paths

download_results(self, output_directory=None)

Downloads and unpacks the jobtask results. Default download to Desktop.

Parameters:

Name Type Description Default
output_directory Union[str, pathlib.Path]

The file output directory, defaults to the current working directory.

 None

Returns:

Type Description
List[str]

List of the downloaded results' filepaths.
Source code in up42/jobtask.py 
def download_results(
    self, output_directory: Union[str, Path, None] = None
) -> List[str]:
    """
    Downloads and unpacks the jobtask results. Default download to Desktop.

    Args:
        output_directory: The file output directory, defaults to the current working
            directory.
    Returns:
        List of the downloaded results' filepaths.
    """
    logger.info(f"Downloading results of jobtask {self.jobtask_id}")

    if output_directory is None:
        output_directory = (
            Path.cwd()
            / f"project_{self.auth.project_id}/job_{self.job_id}/jobtask_{self.jobtask_id}"
        )
    else:
        output_directory = Path(output_directory)
    output_directory.mkdir(parents=True, exist_ok=True)
    logger.info(f"Download directory: {str(output_directory)}")

    download_url = self._get_download_url()
    out_filepaths = download_results_from_gcs(
        download_url=download_url,
        output_directory=output_directory,
    )

    self.results = out_filepaths
    return out_filepaths

get_results_json(self, as_dataframe=False)

Gets the Jobtask results data.json.

Parameters:

Name Type Description Default
as_dataframe bool

"fc" for FeatureCollection dict, "df" for GeoDataFrame.

 False

Returns:

Type Description
Union[dict, geopandas.geodataframe.GeoDataFrame]

Json of the results, alternatively geodataframe.
Source code in up42/jobtask.py 
def get_results_json(self, as_dataframe: bool = False) -> Union[dict, GeoDataFrame]:
    """
    Gets the Jobtask results data.json.

    Args:
        as_dataframe: "fc" for FeatureCollection dict, "df" for GeoDataFrame.

    Returns:
        Json of the results, alternatively geodataframe.
    """
    url = (
        f"{self.auth._endpoint()}/projects/{self.auth.project_id}/jobs/{self.job_id}"
        f"/tasks/{self.jobtask_id}/outputs/data-json/"
    )
    response_json = self.auth._request(request_type="GET", url=url)
    logger.info(f"Retrieved {len(response_json['features'])} features.")

    if as_dataframe:
        # UP42 results are always in EPSG 4326
        df = GeoDataFrame.from_features(response_json, crs=4326)
        return df
    else:
        return response_json

map_results(self, bands=[1, 2, 3], aoi=None, show_images=True, show_features=True, name_column='uid', save_html=None) inherited

Displays data.json, and if available, one or multiple results geotiffs.

Parameters:

Name Type Description Default
bands

Image bands and order to plot, default [1,2,3]. First band is 1.

 [1, 2, 3]
aoi GeoDataFrame

Optional visualization of aoi boundaries when given GeoDataFrame of aoi.

 None
show_images bool

Shows images if True (default).

 True
show_features bool

Shows features if True (default).

 True
name_column str

Name of the feature property that provides the Feature/Layer name.

 'uid'
save_html Path

The path for saving folium map as html file. With default None, no file is saved.

 None
Source code in up42/jobtask.py 
def map_results(
    self,
    bands=[1, 2, 3],
    aoi: GeoDataFrame = None,
    show_images: bool = True,
    show_features: bool = True,
    name_column: str = "uid",
    save_html: Path = None,
) -> folium.Map:
    """
    Displays data.json, and if available, one or multiple results geotiffs.

    Args:
        bands: Image bands and order to plot, default [1,2,3]. First band is 1.
        aoi: Optional visualization of aoi boundaries when given GeoDataFrame of aoi.
        show_images: Shows images if True (default).
        show_features: Shows features if True (default).
        name_column: Name of the feature property that provides the Feature/Layer name.
        save_html: The path for saving folium map as html file. With default None, no file is saved.
    """
    # TODO: Surface optional filepaths? or remove option alltogether?
    if self.results is None:
        raise ValueError(
            "You first need to download the results via job.download_results()!"
        )

    f_paths = []
    if isinstance(self.results, list):
        # Add features to map.
        # Some blocks store vector results in an additional geojson file.
        # pylint: disable=not-an-iterable
        json_fp = [fp for fp in self.results if fp.endswith(".geojson")]
        if json_fp:
            json_fp = json_fp[0]  # why only one element is selected?
        else:
            # pylint: disable=not-an-iterable
            json_fp = [fp for fp in self.results if fp.endswith(".json")][0]
        f_paths = self.results

    elif isinstance(self.results, dict):
        # pylint: disable=unsubscriptable-object
        json_fp = self.results["merged_result"][0]

        f_paths = []
        for k, v in self.results.items():
            if k != "merged_result":
                f_paths.append([i for i in v if i.endswith(".tif")][0])

    df: GeoDataFrame = gpd.read_file(json_fp)

    # Add image to map.
    m = self._map_images(
        bands=bands,
        plot_file_format=[".tif"],
        result_df=df,
        filepaths=f_paths,
        aoi=aoi,
        show_images=show_images,
        show_features=show_features,
        name_column=name_column,
        save_html=save_html,
    )

    return m

plot_quicklooks(self, figsize=(8, 8), titles=None, filepaths=None) inherited

Plots the downloaded quicklooks (filepaths saved to self.quicklooks of the respective object, e.g. job, catalog).

Parameters:

Name Type Description Default
figsize Tuple[int, int]

matplotlib figure size.

 (8, 8)
filepaths Optional[list]

Paths to images to plot. Optional, by default picks up the last downloaded results.

 None
titles Optional[List[str]]

List of titles for the subplots, optional.

 None
Source code in up42/jobtask.py 
def plot_quicklooks(
    self,
    figsize: Tuple[int, int] = (8, 8),
    titles: Optional[List[str]] = None,
    filepaths: Optional[list] = None,
) -> None:
    """
    Plots the downloaded quicklooks (filepaths saved to self.quicklooks of the
    respective object, e.g. job, catalog).

    Args:
            figsize: matplotlib figure size.
            filepaths: Paths to images to plot. Optional, by default picks up the last
                    downloaded results.
            titles: List of titles for the subplots, optional.

    """
    if filepaths is None:
        if self.quicklooks is None:
            raise ValueError("You first need to download the quicklooks!")
        filepaths = self.quicklooks

    self.plot_results(
        plot_file_format=[".jpg", ".jpeg", ".png"],
        figsize=figsize,
        filepaths=filepaths,
        titles=titles,
    )

plot_results(self, figsize=(14, 8), bands=[1, 2, 3], titles=None, filepaths=None, plot_file_format=['.tif'], **kwargs) inherited

Plots image data (quicklooks or results)

Parameters:

Name Type Description Default
figsize Tuple[int, int]

matplotlib figure size.

 (14, 8)
bands List[int]

Image bands and order to plot, default [1,2,3]. First band is 1.

 [1, 2, 3]
titles Optional[List[str]]

Optional list of titles for the subplots.

 None
filepaths Union[List[Union[str, pathlib.Path]], dict]

Paths to images to plot. Optional, by default picks up the last downloaded results.

 None
plot_file_format List[str]

List of accepted image file formats e.g. [".tif"]

 ['.tif']
kwargs

Accepts any additional args and kwargs of rasterio.plot.show, e.g. matplotlib cmap etc.

 {}
Source code in up42/jobtask.py 
def plot_results(
    self,
    figsize: Tuple[int, int] = (14, 8),
    bands: List[int] = [1, 2, 3],
    titles: Optional[List[str]] = None,
    filepaths: Union[List[Union[str, Path]], dict, None] = None,
    plot_file_format: List[str] = [".tif"],
    **kwargs,
) -> None:
    # pylint: disable=line-too-long
    """
    Plots image data (quicklooks or results)

    Args:
        figsize: matplotlib figure size.
        bands: Image bands and order to plot, default [1,2,3]. First band is 1.
        titles: Optional list of titles for the subplots.
        filepaths: Paths to images to plot. Optional, by default picks up the last
            downloaded results.
        plot_file_format: List of accepted image file formats e.g. [".tif"]
        kwargs: Accepts any additional args and kwargs of
            [rasterio.plot.show](https://rasterio.readthedocs.io/en/latest/api/rasterio.plot.html#rasterio.plot.show),
             e.g. matplotlib cmap etc.
    """
    if filepaths is None:
        if self.results is None:
            raise ValueError("You first need to download the results!")
        filepaths = self.results
        # Unpack results path dict in case of jobcollection.
        if isinstance(filepaths, dict):
            filepaths_lists = list(filepaths.values())
            filepaths = [item for sublist in filepaths_lists for item in sublist]

    if not isinstance(filepaths, list):
        filepaths = [filepaths]  # type: ignore
    filepaths = [Path(path) for path in filepaths]

    imagepaths = [
        path for path in filepaths if str(path.suffix) in plot_file_format  # type: ignore
    ]
    if not imagepaths:
        raise ValueError(
            f"This function only plots files of format {plot_file_format}."
        )

    if not titles:
        titles = [Path(fp).stem for fp in imagepaths]
    if not isinstance(titles, list):
        titles = [titles]  # type: ignore

    if len(imagepaths) < 2:
        nrows, ncols = 1, 1
    else:
        ncols = 3
        nrows = int(math.ceil(len(imagepaths) / float(ncols)))

    _, axs = plt.subplots(nrows=nrows, ncols=ncols, figsize=figsize)
    if len(imagepaths) > 1:
        axs = axs.ravel()
    else:
        axs = [axs]

    if len(bands) != 3:
        if len(bands) == 1:
            if "cmap" not in kwargs:
                kwargs["cmap"] = "gray"
        else:
            raise ValueError("Parameter bands can only contain one or three bands.")
    for idx, (fp, title) in enumerate(zip(imagepaths, titles)):
        with rasterio.open(fp) as src:
            img_array = src.read(bands)
            show(
                img_array,
                transform=src.transform,
                title=title,
                ax=axs[idx],
                aspect="auto",
                **kwargs,
            )
        axs[idx].set_axis_off()
    plt.axis("off")
    plt.tight_layout()
    plt.show()