Weize Nanguage

To convert animation GIF to MP4 by ffmpeg, use the following command

ffmpeg -i animated.gif -movflags faststart -pix_fmt yuv420p -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" video.mp4

Description

movflags – This option optimizes the structure of the MP4 file so the browser can load it as quickly as possible.

pix_fmt – MP4 videos store pixels in different formats. We include this option to specify a specific format which has maximum compatibility across all browsers.

The code for this tutorial is here

Opencv provides are useful, but limited, method of building a GUI. A much more complete system could be acheived using pyqt. The question is, how do we display images. There are quite a few possible routes but perhaps the easiest is to use QLabel since it has a setPixmap function. Below is some code that creates two labels. It then creates a grey pixmap and displays it one of the labels. code: staticLabel1.py

from PyQt5.QtWidgets import QWidget, QApplication, QLabel, QVBoxLayout
from PyQt5.QtGui import QPixmap, QColor
import sys

R Ecosystem

R Markdown

Use a productive notebook interface to weave together narrative text and code to produce elegantly formatted output. Use multiple languages including R, Python, and SQL.

Python Ecosystem

Pweave

Pweave is a scientific report generator and a literate programming tool for Python. It can capture the results and plots from data analysis and works well with numpy, scipy and matplotlib.
podoc

	<docs lang="markdown">
	[TODO: write documentation for this plugin.]
	</docs>

	<config lang="json">
	{
	"name": "PythonPlugin",
	"type": "web-python",
	"version": "0.1.0",
	"description": "[TODO: describe this plugin with one sentence.]",

	<docs>
	[TODO: write documentation for this plugin.]
	</docs>

	<config lang="json">
	{
	"name": "VizarrReferenceStore",
	"type": "web-worker",
	"tags": [],
	"ui": "",

	Code from PyCon India 2019 Keynote Talk
	David Beazley (https://www.dabeaz.com)
	======================================

	This code is presented "as is" and represents what was live-coded
	during my closing keynote presentation at PyCon India, Chennai,
	October 13, 2009. I have made no changes to the files.

	Requires: Python 3.6+, numpy, pygame