v0.13.1

Release Notes

New Features

• Add support for all the GeoConnex web service endpoints. There are two ways to use it. For a single query, you can use the geoconnex function and for multiple queries, it's more efficient to use the GeoConnex class.
• Add support for passing any of the supported NLDI feature sources to the get_basins method of the NLDI class. The default is nwissite to retain backward compatibility.

Bug Fixes

• Set the type of "ReachCode" column to str instead of int in pygeoapi and nhdplus_vaa functions.

v0.13.0

Release Notes

New Features

• Add two new functions called flowline_resample and network_resample for resampling a flowline or network of flowlines based on a given spacing. This is useful for smoothing jagged flowlines similar to those in the NHDPlus database.
• Add support for the new NLDI endpoint called "hydrolocation". The NLDI class now has two methods for getting features by coordinates: feature_byloc and comid_byloc. The feature_byloc method returns the flowline that is associated with the closest NHDPlus feature to the given coordinates. The comid_byloc method returns a point on the closest downstream flowline to the given coordinates.
• Add a new function called pygeoapi for calling the API in batch mode. This function accepts the input coordinates as a geopandas.GeoDataFrame. It is more performant than calling its counteract PyGeoAPI multiple times. It's recommended to switch to using this new batch function instead of the PyGeoAPI class. Users just need to prepare an input data frame that has all the required service parameters as columns.
• Add a new step to prepare_nhdplus to convert MultiLineString to LineString.
• Add support for the simplified flag of NLDI's get_basins function. The default value is True to retain the old behavior.

Breaking Changes

• Remove caching-related arguments from all functions since now they can be set globally via three environmental variables:

  • HYRIVER_CACHE_NAME: Path to the caching SQLite database.
  • HYRIVER_CACHE_EXPIRE: Expiration time for cached requests in seconds.
  • HYRIVER_CACHE_DISABLE: Disable reading/writing from/to the cache file.

  You can do this like so:

import os

os.environ["HYRIVER_CACHE_NAME"] = "path/to/file.sqlite"
os.environ["HYRIVER_CACHE_EXPIRE"] = "3600"
os.environ["HYRIVER_CACHE_DISABLE"] = "true"

v0.12.2

Release Notes

New Features

• Add a new class called NHD for accessing the latest National Hydrography Dataset. More info regarding this data can be found here.
• Add two new functions for getting cross-sections along a single flowline via flowline_xsection or throughout a network of flowlines via network_xsection. You can specify spacing and width parameters to control their location. For more information and examples please consult the documentations.
• Add a new property to AGRBase called service_info to include some useful info about the service including feature_types which can be handy for converting numeric values of types to their string equivalent.

Internal Changes

• Use the new PyGeoAPI API.
• Refactor prepare_nhdplus for improving the performance and robustness of determining tocomid within a network of NHD flowlines.
• Add empty geometries that NLDI.getbasins returns to the list of not found IDs. This is because the NLDI service does not include non-network flowlines and instead returns an empty geometry for these flowlines. (:issue_nhd:[#48]{.title-ref})

v0.12.1

Release Notes

Internal Changes

• Use the three new ar.retrieve_* functions instead of the old ar.retrieve function to improve type hinting and to make the API more consistent.
• Revert to the original PyGeoAPI base URL.

v0.12.0

Release Notes

Breaking Changes

• Rewrite ScienceBase to make it generally usable for working with other ScienceBase items. A new function has been added for staging the Additional NHDPlus attributes items called stage_nhdplus_attrs.
• Refactor AGRBase to remove unnecessary functions and make it more general.
• Update PyGeoAPI class to conform to the new pygeoapi API. This web service is undergoing some changes at the time of this release and API is not stable, might not work as expected. As soon as the web service is stable, a new version will be released.

New Features

• In WaterData.byid show a warning if there are any missing feature IDs that are requested but are not available in the dataset.
• For all by* methods of WaterData throw a ZeroMatched exception if no features are found.
• Add expire_after and disable_caching arguments to all functions that use async_retriever. Set the default request caching expiration time to never expire. You can use disable_caching if you don't want to use the cached responses. Please refer to documentations of the functions for more details.

Internal Changes

• Refactor prepare_nhdplus to reduce code complexity by grouping all the NHDPlus tools as a private class.
• Modify AGRBase to reflect the latest API changes in pygeoogc.ArcGISRESTfull class.
• Refactor prepare_nhdplus by creating a private class that include all the previously used private functions. This will make the code more readable and easier to maintain.
• Add all the missing types so mypy --strict passes.

v0.11.4

Release Notes

New Features

• Add a new argument to NLDI.get_basins called split_catchment which if set to True will split the basin geometry at the watershed outlet.

Internal Changes

• Catch service errors in PyGeoAPI and show useful error messages.
• Use importlib-metadata for getting the version insead of pkg_resources to decrease import time as discussed in this issue.

v0.11.3

Release Notes

Internal Changes

• More robust handling of inputs and outputs of NLDI's methods.
• Use an alternative download link for NHDPlus VAA file on Hydroshare.
• Restructure the code base to reduce the complexity of pynhd.py file by dividing it into three files: pynhd all classes that provide access to the supported web services, core that includes base classes, and nhdplus_derived that has functions for getting databases that provided additional attributes for the NHDPlus database.

v0.11.2

Release Notes

New Features

• Add support for PyGeoAPI. It offers four functionalities: flow_trace, split_catchment, elevation_profile, and cross_section.

v0.11.1

Release Notes

New Features

• Add a function for getting all NHD Fcodes as a dataframe, called nhd_fcode.
• Improve prepare_nhdplus function by removing all coastlines and
  better detection of the terminal point in a network.

Internal Changes

• Migrate to using AsyncRetriever for handling communications with web services.
• Catch the ConnectionError separately in NLDI and raise a
  ServiceError instead. So user knows that data cannot be returned due to the out of service status of the server not ZeroMatched.

v0.11.0

Release Notes

New Features

• Add nhdplus_vaa to access NHDPlus Value Added Attributes for all its flowlines.
• To see a list of available layers in NHDPlus HR, you can instantiate
  its class without passing any argument like so NHDPlusHR().

Breaking Changes

• Drop support for Python 3.6 since many of the dependencies such as xarray and pandas have done so.

Internal Changes

• Use persistent caching for all requests which can help speed up network responses significantly.
• Improve documnetation and testing.