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Linux

Automatically get a random wallpaper from Unsplash or bing’s-photo-of-the-day using bash scripting

In this post we develop some bash scripts to fetch a new wallpaper from Unsplash or bing's-photo-of-the-day, set it as the desktop background, and send a desktop notification. Then we automate this process using a crontab job.

Guangzhi
November 1, 2020
1 Comment

Linux, Softwares

Create a desktop dictionary using sdcv and rofi

In this post I demonstrate how to create a desktop dictionary using the "sdcv" as a "back-end", and "rofi" and the "front-end" interface.

Guangzhi
October 19, 2020

Algorithms, Python Programming

Ramer-Douglas-Peucker (RDP) algorithm in spherical coordinate

The Ramer-Douglas-Peucker (RDP) algorithm is a curve simplification method. To apply it on coordinates defined by latitudes/longitudes, we need to replace the Cartesian geometry with a spherical one.

Guangzhi
October 16, 2020

Linux, Python Programming

Use git to sync dotfiles

It is a common practice to use `git` to back-up and sync ones "dotfiles". I also create Python script to help automate this process.

Guangzhi
October 9, 2020

Emacs, LaTeX, Softwares, Vim

Review 5 desktop note-taking applications

I give a review of 5 desktop note-taking applications: Evernote, OneNote, Simplenote, Zim and Emacs. What's your digital note-taking tool of choice?

Guangzhi
October 2, 2020
2 Comments

Python Programming, Softwares

A Python script to report status of local git repositories

A Python script that "scans through" a collection of local git repositories and generates a report for me.

Guangzhi
September 26, 2020

Softwares

Use git in your programming or research work

`git` was initially created by and for programmers. However, some of its features, particularly the version control functionality can benefit researchers in general, not restricted to computer sciences.

Guangzhi
September 21, 2020
1 Comment

Python Programming

[Fun with Python] Create spiral art with Python

A toy Python script that converts an image into a spiral curve art.

Guangzhi
September 16, 2020

Algorithms, Fortran Programming, Python Programming

2D convolution with missing data

The convolution functions in `scipy` do not work well with missing data. We create a 2D convolution function that allows a controllable tolerance to missing values. It is first implemented in Fortran, then using `scipy` in an FFT approach.

Guangzhi
September 16, 2020

Algorithms, Python Programming

Peak prominence

Peak prominence can be used to identify relatively organized regional maxima while filtering out local disturbances.

Guangzhi
September 14, 2020