Package index • CRiSp

All functions

add_weights(): Add weights to the network.

as_bbox(): Get the bounding box from the x object

as_network(): Create a network from a collection of line strings.

bucharest_dem: CRiSp example DEM data for Bucharest

bucharest_osm: CRiSp example OSM data for Bucharest

buffer_bbox(): Apply a buffer region to a bounding box

cap_corridor(): Cap the corridor by connecting the edge end points

clean_network(): Clean a spatial network.

clip_and_filter(): Clip lines to the extent of the corridor, and filter valid segment edges

corridor_edge(): Draw a corridor edge on the spatial network.

corridor_end_points(): Find the corridor end points.

default_stac_dem

Endpoint and collection ID of the default STAC colleciton where to access digital elevation model (DEM) data. This is the global Copernicus DEM 30 dataset hosted on AWS, as listed in the EarthSearch STAC API endpoint. Note that AWS credentials need to be setup in order to access the data (not the catalog). References:

delineate_corridor(): Delineate a corridor around a river.

delineate_riverspace(): Delinate the riverspace.

dem_to_cog(): Write DEM to cloud optimized GeoTiff file as specified location

filter_clusters(): Cluster the river crossings and select the shortest crossing per cluster

filter_network(): Subset a network keeping the only nodes that intersect a target geometry.

flatten_network(): Flatten a network by adding points at apparent intersections.

get_cd_char(): Get characteristic value of distribution of cost distance

get_corridor(): Delineate a river corridor on a spatial network.

get_cost_distance(): Derive cost distance function from masked slope

get_dem(): Access digital elevation model (DEM) for a given region

get_intersecting_edges(): Identify network edges that are intersecting a geometry

get_osm_bb(): Get the bounding box of a city

get_osm_city_boundary(): Get the city boundary from OpenStreetMap

get_osm_railways(): Get OpenStreetMap railways

get_osm_river(): Get the river centreline and surface from OpenStreetMap

get_osm_streets(): Get OpenStreetMap streets

get_osmdata(): Retrieve OpenStreetMap data for a given location

get_segments(): Split a river corridor into segments

get_slope(): Derive slope as percentage from DEM

get_stac_asset_urls(): Retrieve the URLs of all the assets intersecting a bbox from a STAC API

get_utm_zone(): Get the UTM zone of a spatial object

get_valley(): Extract the river valley from the DEM

get_valley_polygon(): Create vector/polygon representation of valley without holes from raster mask

get_valley_polygon_no_hole(): Remove possible holes from valley geometry

get_valley_polygon_raw(): Create vector/polygon representation of valley raster mask

initial_corridor(): Draw the initial geometry of a river corridor.

initial_edges(): Identify the initial edges of the river corridor

load_raster(): Retrieve STAC records (of a DEM) corresponding to a list of asset urls, crop and merge with a specified bounding box to create a dem of the specified region

mask_cost_distance(): Mask out river regions incl. a buffer in cost distance raster data

mask_slope(): Mask slope raster, setting the slope to zero for the pixels overlapping the river area.

merge_block(): Merge a block to one of the target geometries

merge_blocks(): Merge a set of blocks to adjacent ones

nearest_node(): Find the node in a network that is closest to a target geometry.

osmdata_as_sf(): Retrieve OpenStreetMap data as sf object

refine_segments(): Refine candidate segments via recursive merging

reproject(): Reproject a raster or vector dataset to the specified coordinate reference system (CRS)

river_buffer(): Draw a corridor as a fixed buffer region around a river.

river_valley(): Draw a corridor as an estimate of the river valley.

set_units_like(): Set the units of x as the units of y

shortest_path(): Find shortest path between a pair of nodes in the network.

simplify_network(): Simplify a spatial network by removing multiple edges and loops.

smooth_dem(): Spatially smooth dem by (window) filtering

split(): Split a geometry along a (multi)linestring.

split_aoi(): Split the area of interest (AoI) by a river.