MIDASFlow-R

MIDASFlow-R is the R interface to the Memory-Efficient I/O-Improved Drainage Analysis System (MIDAS). MIDAS needs to be installed separately in PATH.

Related projects

• MIDAS: Core C library and excutables (required for all Python, R, and QGIS interfaces)
• MIDASFlow: Python package
• MIDAS-QGIS: QGIS plugin

Installation

remotes::install_github("HuidaeCho/midasflow-r")
library(midasflow)

References

• MEFA (Flow Accumulation): Huidae Cho, July 2023. Memory-Efficient Flow Accumulation Using a Look-Around Approach and Its OpenMP Parallelization. Environmental Modelling & Software 167, 105771. doi:10.1016/j.envsoft.2023.105771. Author's Version.
• MESHED (Watershed Delineation): Huidae Cho, January 2025. Avoid Backtracking and Burn Your Inputs: CONUS-Scale Watershed Delineation Using OpenMP. Environmental Modelling & Software 183, 106244. doi:10.1016/j.envsoft.2024.106244. Author's Version.
• MELFP (Longest Flow Path): Huidae Cho, September 2025. Loop Then Task: Hybridizing OpenMP Parallelism to Improve Load Balancing and Memory Efficiency in Continental-Scale Longest Flow Path Computation. Environmental Modelling & Software 193, 106630. doi:10.1016/j.envsoft.2025.106630. Author's Version.

Change log

See here.

Versioning

N(.N)*[{a|b|rc}N][.postN][.devN]

• PEP 440
• {a|b|rc|.dev}N towards and .postN away from the release
• Not fully compatible with semantic versioning
• Not using build numbers marching away from or towards a release, but check this interesting comment.

License

Copyright (C) 2025 Huidae Cho

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.