Give a set of transecct linestrings and poylgons and get the minimum distance to extend each transect line (from both directions, to try and reach the edge of a "polygons") DEPRECATED VERSION, use extend_transects_to_polygons() WIP/internal function for extending transect lines out to FEMA 100 year flood plain polygons (VERSION 2)
extend_transects_to_polygons2.RdGive a set of transecct linestrings and poylgons and get the minimum distance to extend each transect line (from both directions, to try and reach the edge of a "polygons") DEPRECATED VERSION, use extend_transects_to_polygons() WIP/internal function for extending transect lines out to FEMA 100 year flood plain polygons (VERSION 2)
Usage
extend_transects_to_polygons2(
transect_lines,
polygons,
flowlines,
crosswalk_id = "hy_id",
grouping_id = "mainstem",
max_extension_distance = 3000
)Arguments
- transect_lines
Set of Sf linestrigns to extend (only if the transect lines are ENTIRELLY within a polygons)
- polygons
set of sf polygons that transect lines should be exteneded
- flowlines
set of Sf linestrings
- crosswalk_id
character, flowline ID that matches flowlines with transect lines. This crosswalk_id must appear are a column in both flowlines and transect_lines.
- grouping_id
character, name of a column in flowlines that should be used to group each transect with 1 or more flowlines. That is, when transects are checked to make sure they don't intersect other transects or other flowlines, this group ID will distinguise which flowlines a transect should be checked against. The intersect_group_id must appear as a column in both flowlines and transect_lines dataframes
- max_extension_distance
numeric, maximum distance (meters) to extend a transect line in either direction to try and intersect one of the "polygons". Default is 3000m