README.md

In KeesVanImmerzeel/idf: Extending the 'raster' package with reading and writing idf rasters

idf

Extending the 'terra' package in order to be able to read and write idf rasters.

IDF is a simple binary format used by the iMOD groundwater modelling software. The format contains a header with grid and spatial extent information and an array of floats.The array of floats is translated to a rectangular grid using the ncol and nrow fields of the header.

Installation

You can install the released version of the idf-package with:

install_github("KeesVanImmerzeel/idf")

Then load the package with:

library("idf")

Functions in this package

• read_raster(): create a terra::SpatRaster object (single layer) from an idf-file.
• write_raster(): writes an terra::SpatRaster object (single layer) to a file, using one of the many supported formats or the terra package or the idf file format as used in the imod modeling software.
• create_funstr(): Create a string ("funstr") to be used in functions read_raster() and write_raster().
• funstr_ptrn(): Create a string to be used as pattern in the function "create_funstr()".
• idfname_to_date(): Extract the date part of an idf filename with a date included, like in 'HEAD_20080402_l1.idf'.
• filter_idfnames(): Filter filenames of idf files with a date included, like "HEAD_20080402_l1.idf".
• all_idf_filenames_contain_dates(): FALSE if at least 1 filename specified does not contain a date; TRUE otherwise (all filenames contain a date).
• create_statistic_raster(): Summarize the values of multiple layers into one layer.

Get help

To get help on the functions in this package type a question mark before the function name, like ?read_raster()

idf-format definition

KeesVanImmerzeel/idf documentation built on Jan. 13, 2025, 3:23 a.m.