# Scientific Computing Workshop 11-12 June 2024: Day1 Q&A archive
## Day 1 : Using NetCDF data format with Modern Fortran
:::success
## Lesson Materials
- [Day1 Slides](https://drive.google.com/drive/folders/1bxAoQC5a-1fjgB4wuaQj95A0POPljrtP)
- Example Codes are in three locations.
1. [G-drive](https://drive.google.com/drive/folders/1bxAoQC5a-1fjgB4wuaQj95A0POPljrtP)
2. [Gitlab](https://gitlab.sigma2.no/open/netcdf)
3 On Saga under `/cluster/projects/nn9970k/scw_s2024/day1/netcdf/`
:::
## Day 1 : Using NetCDF data format with Modern Fortran
### Icebreaker
1. Are you familiar with netCDF data format? Type an 'o'
- yes: oooo
- no : oooo
2. Which programming languages are you comfortable with? State below.
- Lua
- MATLAB o
- Python: o
- Julia
- Fortran
- C/C++: o
- R
3. Which tools are you using to visualise netCDF data? State below.
- NCO library
- Python netCDF4: o
- MATLAB: oo
- ncview: o
:::info
- A nice blog post on [What Julia can and can't replace about Fortran](https://joshua-laughner.io/posts/julia-misunderstood/#:~:text=Julia%20isn't%20a%20catch,than%20be%20hurt%20by%20it.)
- [ncdump - gives a nice summary of file contents ](https://www.unidata.ucar.edu/software/netcdf/workshops/2011/utilities/Ncdump.html)
- [The NetCDF Programming APIs](https://docs.unidata.ucar.edu/netcdf-c/current/netcdf_apis.html)
- [Software for Manipulating or Displaying NetCDF Data](https://www.unidata.ucar.edu/software/netcdf/software.html)
- [Unidata netCDF Fortran repo](https://github.com/Unidata/netcdf-fortran)
:::
### Ask your questions below.
1. How many netCDF formats are there?
- netCDF format variants: the classic format, 64-bit data format, 64-bit offset format and netCDF-4 format. See more [here](https://docs.unidata.ucar.edu/netcdf/NUG/netcdf_introduction.html)
## Poll
- Do you have access to the example codes?
- Yes: o
- No :
> Example Codes are in three locations.
> 1. [G-drive](https://drive.google.com/drive/folders/1bxAoQC5a-1fjgB4wuaQj95A0POPljrtP)
> 2. [Gitlab](https://gitlab.sigma2.no/open/netcdf)
> 3 On Saga under `/cluster/projects/nn9970k/scw_s2024/day1/netcdf/`
>
## Exercise : example-1
> hints to compile
> - `gfortran $INCLUDE filename.f90 -o filename -lnetcdff`
> - `export INCLUDE=-I/cluster/software/netCDF-Fortran/4.6.1-gompi-2023a/include`
> - ```export INCLUDE=$(echo $CPATH | awk -F: '{print "-I"$1}')``` – seems to be needed for Makefile example compilation
## Poll
- Have you finished the exercise?
- yes: oo
- no, I need more time:
- no, I am stuck as I got error message:
- no, I am not trying now:
## Feedback for the day
- One thing you liked
- Great course, I liked both the theory and the relevant examples. Good with the material that can be explored in more details after the course.
- Thank you +1
- Thank you for the nice course +2
- One thing we should improve next time
------------------------------------------------------------------