https://github.com/doi-usgs/volcano-ash3d-hourssince
https://github.com/doi-usgs/volcano-ash3d-hourssince
Last synced: about 2 months ago
JSON representation
- Host: GitHub
- URL: https://github.com/doi-usgs/volcano-ash3d-hourssince
- Owner: DOI-USGS
- License: other
- Created: 2017-10-03T12:33:06.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2025-03-08T02:30:01.000Z (3 months ago)
- Last Synced: 2025-03-08T03:21:49.454Z (3 months ago)
- Language: Fortran
- Size: 43.9 KB
- Stars: 0
- Watchers: 6
- Forks: 6
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE.md
Awesome Lists containing this project
README
HoursSince
==========
HoursSince is a collection of functions and subroutines that calculate
the number of hours of a given calendar date from Jan. 1 of a reference year.
These functions were written as a component of the USGS volcanic ash
transport and dispersion model, Ash3d. However, since they are useful for
other programs outside of Ash3d, they are collected into a stand-along file
that can either be compiled as a library or simply compiled directly with
other source code.
To compile as a library, simple type:
`make`
Some subroutines in HoursSince.f90 have stand-alone wrapper programs, using 1900
as the base year for the hours calculation.
`HoursSince1900`
`yyyymmddhh_since_1900`
To compile these wrapper programs, type:
`make tools`
To test the library, type:
`make check`
This will run two tests. The first, the self-test program `testHours` which
verifies internal consistency of the subroutines. Second, the program
`HoursSince1900` is used to calculate hour differences between random date
pairs, with a comparison to the calculation using the unix `date` command.
To install the library, edit the `INSTALLDIR` variable of the makefile (the
default is `/opt/USGS`) and type:
`make install`
You will need to have write permission in `${INSTALLDIR}` or install as root.
Authors
-------
Hans F. Schwaiger
Larry G. Mastin
Roger P. Denlinger