ambur.hva {amburhva} | R Documentation |
The function requires four ESRI Shapefiles with properly formatted field names and attributes:
1. post-AMBUR analysis envelope transect shapefile
2. FEMA Q3/FIRM shapefile
3. NOAA/NWS MOM-AGL or USACOE SLOSH shapefile
4. NOAA SoVI shapefile
The function will generate shapefiles for five vulnerability analyses:
shoreline change
inundation
SoVI scaled
inundation/SoVI
shoreline change/inundation/SoVI
The function will generate a text file during the analysis:
parameters (a text file with analysis paramaters/variables than can be
'sourced' in R or cut & pasted in R at the R prompt)
ambur.hva(loc = "location", bufferdist = 150, bufferdist2 = 10, removeanthro = "no", file1 = "path", file2 = "path", file3 = "path", file4 = "path", dir1 = "path", scr = c(-1, -0.2, 0.2, 1), tscr = c(0.5, 0.2), sscr = c(0.16, 0.074), sovi = c(6.77, 4.06, -1.37, -4.09))
loc |
Defines the geographic location of the study area that will be used to name the output folder tag. (optional input) |
bufferdist |
Buffer radius in map units that is used to search adjacent transects to collect spatial shoreline change variability. |
bufferdist2 |
Buffer distance to convert transect lines into polygons for intersecting with inundation and SoVi data. |
removeanthro |
Remove transects that are classified as "anthropogenic" from the analyses. |
file1 |
File path (in quotes) to the post-AMBUR analysis envelope transect shapefile. If left as "path" then a file will be chosen interactively. |
file2 |
File path (in quotes) to the FEMA Q3/FIRM shapefile. If left as "path" then a file will be chosen interactively. |
file3 |
File path (in quotes) to the NOAA/NWS MOM-AGL or USACOE SLOSH shapefile. If left as "path" then a file will be chosen interactively. |
file4 |
File path (in quotes) to the NOAA SoVI shapefile. If left as "path" then a file will be chosen interactively. |
dir1 |
Directory/folder path (in quotes) to store the results in. If left as "path" then a directory/folder will be chosen interactively. |
scr |
Shoreline change rate breakpoints in map units/year (high to low risk) |
tscr |
Temporal shoreline change rate breakpoints (high to low risk) |
sscr |
Spatial shoreline change rate breakpoints (high to low risk) |
sovi |
Sovi score breakpoints (high to low risk) |
none
date and time stamped folder containing the following shapefiles:
ambur_hva_shoreline_change ambur_hva_inundation ambur_hva_inundation_sovi ambur_hva_sc_inundation_sovi
Some data are available at NOAA's Digital Coastal website.
Chester W. Jackson Jr., Ph.D. Georgia Southern University - Applied Coastal Research Lab
http://ambur.r-forge.r-project.org/
https://msc.fema.gov/
http://www.fema.gov/floodplain-management/flood-zones
http://slosh.nws.noaa.gov/
(Use a user name of Gustav2000 and a password of Ike2008)
http://webra.cas.sc.edu/hvri/products/sovi.aspx
A <- system.file("external/Jekyll_envelope_transects_original.shp", package="amburhva") B <- system.file("external/Jekyll_Q3_DFIRM_GEMA.shp", package="amburhva") C <- system.file("external/Jekyll_SLOSH_USACOE_GEMA.shp", package="amburhva") D <- system.file("external/Jekyll_SoVI.shp", package="amburhva") E <- dirname(system.file("external/Jekyll_envelope_transects_original.shp", package="amburhva")) ambur.hva(loc = "location", bufferdist = 150, bufferdist2 = 10, removeanthro = "no", file1 = A, file2 = B, file3 = C, file4 = D, dir1 = E, scr = c(-1, -0.2, 0.2, 1), tscr = c(0.5, 0.2), sscr = c(0.16, 0.074), sovi = c(6.77, 4.06, -1.37, -4.09))