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Get intersection points between Hydrography90m stream network and lake shapefiles

Source: R/get_lake_intersection.R
get_lake_intersection.Rd

The function identifies, for each lake ID, the intersection points between the stream network (i.e., Hydrography90m) and the corresponding lake's geospatial file (e.g., HydroLAKES shapefile).

Usage

get_lake_intersection(
  data,
  lake_id = "HydroLAKES_polys_v10",
  lakes,
  lake_name,
  buffer = TRUE,
  edge,
  stream,
  flow,
  basins,
  lake_dat,
  n_cores = 1,
  quiet = TRUE
)

Arguments

data

a data.frame or data.table that contains the columns regarding the lake ids, i.e. HydroLAKES ids. (i.e., output of extract_lake_ids); see also help(extract_lake_ids)

lake_id

character. The name of the column containing lake ids.

lakes

character. Full path to lake geo-spatial files; i.e. HydroLAKES shapefiles.

lake_name

character. The name of the attribute table column in the geo-spatial files containing the lake ids; i.e. "HydroLAKES_polys_v10" for HydroLAKES shapefiles.

buffer

character. users can either set buffer to TRUE, FALSE or provide buffer size in meters; if TRUE a predefined buffer is used where the size of the buffer depends on the lake size; if FALSE no buffer is applied; Default is TRUE

edge

character. Full path to GuidosToolbox Workbench MSPA tool see also (https://forest.jrc.ec.europa.eu/en/activities/lpa/gtb/)

stream

character. Full path to Hydrography90m stream network tif file add a reference were to check the necessary tif files for lake analysis

flow

character. Full path to Hydrography90m flow accumulation tif file

basins

character. Full path to Hydrography90m basin tif file

lake_dat

character. Full path of the output.csv table, i.e., the lake intersection table.

n_cores

interger. Number of cores used in parallelization, Default is one.

quiet

logical. If FALSE, the standard output will be printed. Default is TRUE.

References

https://grass.osgeo.org/grass82/manuals/ Soille P. and Vogt P. (2009). Morphological segmentation of binary patterns. Pattern Recognition Letters 30, 4:456-459, doi: 1.1016/j.patrec.2008.10.015 https://ies-ows.jrc.ec.europa.eu/gtb/GTB/MSPA_Guide.pdf

Author

Jaime Garcia Marquez, Thomas Tomiczek

Examples