diff --git a/.nojekyll b/.nojekyll index 8c45611..63a86de 100644 --- a/.nojekyll +++ b/.nojekyll @@ -1 +1 @@ -8a56bfb1 \ No newline at end of file +c88b014a \ No newline at end of file diff --git a/preserve_computing-env.html b/preserve_computing-env.html index 2d83e97..31e7a70 100644 --- a/preserve_computing-env.html +++ b/preserve_computing-env.html @@ -20,6 +20,40 @@ margin: 0 0.8em 0.2em -1em; /* quarto-specific, see https://github.com/quarto-dev/quarto-cli/issues/4556 */ vertical-align: middle; } +/* CSS for syntax highlighting */ +pre > code.sourceCode { white-space: pre; position: relative; } +pre > code.sourceCode > span { line-height: 1.25; } +pre > code.sourceCode > span:empty { height: 1.2em; } +.sourceCode { overflow: visible; } +code.sourceCode > span { color: inherit; text-decoration: inherit; } +div.sourceCode { margin: 1em 0; } +pre.sourceCode { margin: 0; } +@media screen { +div.sourceCode { overflow: auto; } +} +@media print { +pre > code.sourceCode { white-space: pre-wrap; } +pre > code.sourceCode > span { display: inline-block; text-indent: -5em; padding-left: 5em; } +} +pre.numberSource code + { counter-reset: source-line 0; } +pre.numberSource code > span + { position: relative; left: -4em; counter-increment: source-line; } +pre.numberSource code > span > a:first-child::before + { content: counter(source-line); + position: relative; left: -1em; text-align: right; vertical-align: baseline; + border: none; display: inline-block; + -webkit-touch-callout: none; -webkit-user-select: none; + -khtml-user-select: none; -moz-user-select: none; + -ms-user-select: none; user-select: none; + padding: 0 4px; width: 4em; + } +pre.numberSource { margin-left: 3em; padding-left: 4px; } +div.sourceCode + { } +@media screen { +pre > code.sourceCode > span > a:first-child::before { text-decoration: underline; } +} @@ -405,9 +439,153 @@
pip freeze > requirements.txt
will capture all the python modules installed in your current environment
You can even go a step further and help others to recreate the same computing environment that you used independently of what versions you have installed on your machine: https://rstudio.github.io/renv/articles/renv.html
+You can even go a step further and help others to recreate the same computing environment that you used independently of what versions you have installed on your machine.
+ +Here is a short introduction to renv
, an R package that creates virtual environment to encapsulate your R work.
We are going to add renv to our shorebird data cleaning project. Make sure you have the renv package installed:
+install.packages("renv")
You may also choose Tools>Project Options>Environments and check “use renv for this project”
+Or at the R console:
+::init( ) renv
Let’s check the new files that we have…
+Let’s say we reworked our script and suppose we would need the naniar R package to deal with the NAs. Let’s update or virtual environment:
+::install("naniar") renv
Add some R code using this package, for example
+library(naniar)
+
+%>%
+ snowsurvey_csv miss_var_summary()
Alright, now that the installation is completed and we added this package to our code, we can save, and take a snapshot:
+::snapshot() renv
This action will update the lock file, and we will see naniar and all its dependencies included.
+Let’s check. If updated, you should be good to go. If your attempts to update packages introduced new problems, you may run renv::restore()
to revert to the previous state as encoded in the lockfile.
Use .libPaths()
to confirm where package installations are located!
Want to know more? here is a good resource to get started: https://rstudio.github.io/renv/articles/renv.html
+virtualenv
is a tool to create Python virtual environments. In a nutsheel here are the steps to follow:
Create a new folder, your project folder. I will use EDS213. Make sure you set the path to this folder.
+To create the environment: (second venv is the name of the environment)
+python3 -m venv venv213
-m
flag makes sure you are creating a pip that is tied to the active Python executableTime to activate it:
+source venv213/bin/activate
You can tell it is activated because it shows (venv213) in the prompt.
+Let’s check which packages are there with a new pip list
Nothing, right? Only setup tools, and pip). Nothing to worry about, it should be this way! Let’s proceed.
+Install libraries:
+We will be installing two packages for this exercise.
+First:
+pip install numpy
And then:
+pip install pandas
This should take a little longer!
+Another pip list
Alright, the packages and dependencies installed are right there!
+Export and allow future replication of the environment:
+Let’s save the packages and dependencies we have after the installs.
+pip freeze
That should be stored in a `requirements.txt file
+So let’s get it redirected to the required file:
+pip freeze > requirements.txt
Question: This file won’t leave inside the venv folder, but rather in the project root folder any idea why?
+Well, you only need that file to reproduce the environment. And the venv should be should throw away and be able to rebuild easily! So, do not include any project file in that folder and treat that as disposable after the pip freeze
+To double-check if all is good, we can run the following command:
+cat requirements.txt
This file should be included in your repository to let others reinstall your packages and dependencies as needed.
+Deactivate
+If you are done with that, you should deactivate that environment by typing:
+deactivate
Then, you will see you no longer have the environment we created in our prompt.
+If you are willing to delete the environment altogether, you should delete the directory for the virtual environment
+Remove folder:
+rm -rf venv213/
Reusing the Requirements
+Create a new project folder to reuse the requirements
+mkdir my-project
Create a virtual env for it
+python3 -m venv my-project/venv
Activate it
+source my-project/venv/bin/activate
Install required packages
+pip install -r requirements.txt
Attention! Never include project files in the venv folder.
Do not commit your venv file to the environment itself to source control (git ignore)
You may install more packages and update the requirements.txt with the pip freeze command
You should commit /share only your requirements.txt file. That is all that others and your future self need to recreate the environment.
The environment should be something you should throw away and be able to rebuild easily.
Make sure to deactivate when done using it.
Checking what is in the system:
+conda list
+To create the environment:
+conda create --name env213
proceed ([y]/n)? y
+Time to activate it
+conda activate env213 only work on conda 4.6 and later versions. For Conda versions prior to 4.6, run:
+You can tell it is activated because it shows (venv213) in the prompt.
+Let’s check which packages are there with a new
+conda list env213
Empty, right? Nothing to worry about, it should be this way! Let’s proceed.
+Install packages:
+We will be installing two packages for this exercise.
+First:
+conda install numpy
proceed ([y]/n)? y
+And then, one more package:
+conda install Pandas
proceed ([y]/n)? y
+Now check which packages are in the specific environment we are working on:
+conda list
Alright, the packages and dependencies installed are right there!
+Export and allow future replication of the environment:
+Let’s save the packages and dependencies we have after the installs.
+conda list --export
That should be stored in a environments.yml file
+So let’s get it redirected to the required file:
+conda list -e > environment.yml
This file should be included in your research compendium to let others reinstall your packages and dependencies as needed.
+Deactivate it:
+If you are done with that, you should deactivate that environment by typing:
+conda deactivate
Note: only works on conda 4.6 and later versions. For conda versions before 4.6, run:
+Windows: deactivate
or Linux and macOS: source deactivate
Then, you will see you no longer have the environment we created in our prompt.
+If you are willing to delete the environment altogether, you should delete the directory for the virtual environment
+Back to base we can create a new environment based on the .yml packages and dependencies by running (this is noted on top of the yml file):
+conda create --name my-env --file environment.yml
proceed ([y]/n)? y
+Activate it:
+conda activate my-env (or see above if conda version \< 4.6)
proceed ([y]/n)? Y
+Check if packages are there:
+conda list
Remember to deactivate it when done:
+conda deactivate (or see above if conda version \< 4.6)
Check all your environments conda env list
More info: https://conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html
+