Conda cheatsheet
# CREATE CONDA ENVIRONMENT conda create -n [MY_ENV_NAME] # create conda environment conda create --name [MY_ENV_NAME] python=3.5 # create conda env with py version conda create -f env.yaml # create…
Github: resolving conflict
Conflict 1: hint: Updates were rejected because a pushed branch tip is behind its remote hint: counterpart. Check out this branch and integrate the remote changes hint: (e.g. 'git pull…
R – here package
https://here.r-lib.org/articles/here.html it is a useful package to set project root directory # my project structure is following: #> /home/sunny/work/myproject #> ├── data_proc #> │ └── mycode.R #> ├── analysis #>…
How to create a website from Quarto
source: https://quarto.org/docs/publishing/github-pages.html Download and install Quarto CLI from https://quarto.org/docs/download/ Open your terminal and go to your working directory (e.g. ~/projects/sunny-bak/) Create a quarto scaffolding for your project (template) called funsite;…
How to set up multiple ssh keys (accounts) in multiple workspaces
https://blog.gitguardian.com/8-easy-steps-to-set-up-multiple-git-accounts/ Create ssh keys using key-gen (id_personal, id_prof) Add keys using ssh-agent Create config file in ~/.ssh/config # ~/ssh/config Host * AddKeysToAgent yes UseKeychain yes IdentityFile ~/.ssh/<personal_key> Host * AddKeysToAgent…
Useful R codes
How to get min and max value and the associated year that min and max values occurred previous <- dfile %>%filter(YearLabel == "Previous") %>%group_by(MonthName) %>%summarize(min_extent = min(extent_mil),max_extent = max(extent_mil),year_min =…
Creating htmlwidget in RStudio
To set up required packages to create htmlwidget install.packages("htmlwidgets") install.packages("devtools") Scaffolding will provide a template (basic structure) for a widget development library(devtools) create("my_widget") htmlwidgets::scaffoldWidget("my_widget") document() # Update documentation build() #…
How to access metadata using NetCDF4 python package
import netCDF4 as ncfn = '/path/to/file.nc4'ds = nc.Dataset(fn) # import Dataset from netCDF4 from netCDF4 import Dataset # open nc file and save to nc ds = Dataset('myfile.nc') # print…
Metadata guideline for crs in netcdf files
source: https://cfconventions.org/Data/cf-conventions/cf-conventions-1.7/build/ch05s06.html https://wiki.esipfed.org/Attribute_Convention_for_Data_Discovery_1-3 In this article, we will summarize few useful metadata standards (CF and ACDD) to describe coordinate reference systems and mapping for netcdf files. Additionally, few examples with…
Defensive programming Error Handling in R
"Fail fast!" principles to inform users early with information to debug. Be strict about what you accept. Check the input variable type and use stopifnot() or if and stop() Avoid…
R data wrangling
This code snippet has nice examples of data wrangling From https://www.jumpingrivers.com/blog/r-d3-intro-r2d3/ scoobydoo = tuesdata$scoobydoo # wrangling data into nice shape monsters_caught = scoobydoo %>% select(date_aired, starts_with("caught")) %>% mutate(across(starts_with("caught"), ~ as.logical(.)))…
How to handle conflicts in github
This happens a lot. I will try to write out scenarios I've dealt with.. Here are ways to deal with conflicts Decide to delete the file of conflict from Main…
How to work with a new github branch
Once you were able to properly authenticate and clone (download) a repository you have a read/write access to, it's time to create a new branch. Why create a branch? it's…
How to create one ssh key for all github repos
There are few ways to manage private and public keys for github repositories. When a user has multiple github accounts/repositories using multiple personal and work computers, it's easier to create…
Ways to download ERDDAP Data using python
ctx = ssl.create_default_context() ctx.check_hostname = False ctx.verify_mode = ssl.CERT_NONE url = 'https://oceanwatch.pifsc.noaa.gov/erddap/griddap/sw_chla_monthly_2018_0.nc?chlor_a[(1997-10-16T12:00:00Z):1:(2010-10-16T12:00:00Z)][(25):10:(15)][(198):10:(208)]' file_name = "sw.nc" with urllib.request.urlopen(url, context=ctx) as u, \ open(file_name, 'wb') as f: f.write(u.read()) print('complete') source: https://github.com/CoastWatch-WestCoast/python_code/blob/satellite_course_jan_2022/compare_satellite_timeseries.ipynb def…