Almar Klein almarklein

Indie Pythonista ♥ 3d viz, WASM, reinventing weels.

almarklein / bokeh_line_pick.py

Last active November 24, 2015 16:01

How to pick a line among multiple lines in Bokeh

	import numpy as np
	from bokeh.plotting import output_notebook, show, figure
	from bokeh.models import Plot, CustomJS, TapTool, ColumnDataSource, Line, DataRange1d
	output_notebook()

	p = figure()
	t = np.linspace(0, 5, 100)
	l1 = p.line(t, np.sin(t), color='#ff0000', nonselection_color='#888', line_width=5)
	l2 = p.line(t, np.sin(t+1), color='#00ff00', nonselection_color='#888', line_width=5)
	#l3 = p.line(t, np.sin(t+2), color='#0000ff', nonselection_color='#888', line_width=5)

almarklein / log building freeimage win

Created January 12, 2016 21:55

	D:\dev>conda build pyapps\conda-recipes\freeimage
	Removing old build environment
	Removing old work directory
	BUILD START: freeimage-3.17.0-vc10_1
	Fetching package metadata: ........
	Solving package specifications: ...........
	The following NEW packages will be INSTALLED:

	msvc_runtime: 1.0.1-vc10_0 [vc10]
	pip: 7.1.2-py34_0

almarklein / messagepool.py

Created January 25, 2016 21:53

Multi-process communication via a message pool implemented using UDP multicast

	# Copyright 2016 (C) Almar Klein. Consider this 2-clause BSD licensed.
	"""
	I initially wrote this to be included in flexx for multiple processes
	on the same machine to communicate, more specifically, to allow a Flexx
	CLI to get info on and terminate running server processes. I tested it
	to work on Windows and Linux. I eventuially discarded this approach
	because I don't fully get how UDP multicast works. It's important for
	this to only work for localhost, and I am not sure if it does, or how
	hard it is to compromise this. I went with a simpler approach based on
	http requests using Tornado.

almarklein / flexx_like_react.py

Created December 13, 2017 20:55

	## Option 1 - strings for verbatim html, dicts for elements with attributes
	class MyReactlikeWidget(ReactLike):

	name = event.StringProp('john', settable=True)

	def render(self):
	return ['greet: ',
	dict(type='b',
	onclick=lambda:print('clicked!'),
	innerHTML='hi ' + self.name),

almarklein / bb64.js

Created January 12, 2018 22:38

Efficient JavaScript implementation of Base64 encoding/decoding of bytes (Uint8Array)

	"use strict";

	function base64encode(b, last_two) {
	"use strict";
	console.assert(b.BYTES_PER_ELEMENT == 1);
	// Most Base64 encoders use +/ for the last two characters, but not all
	if (last_two === undefined) last_two = '+/';
	// Init charcodes array
	var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" + last_two;
	var charcodes = new Uint8Array(64);

almarklein / trim_py_files.py

Last active May 24, 2021 15:58

Trim trailing whitespace in Python files

	import os


	def trim_py_files(*directories):
	"""Remove trailing whitespace on all .py files in the given directories.
	"""
	nchanged = 0
	for directory in directories:
	for root, dirs, files in os.walk(directory):
	for fname in files:

almarklein / readlines_reversed.py

Last active September 10, 2018 21:34

	"""
	Implementation of an iterator that yields the lines in a file in reverse order.
	Copyright (C) 2018, Almar Klein
	BSD licensed.
	"""

	## ===== The code =====


	def readlines_reversed(f):

almarklein / plotly_fast_image_test.html

Created November 30, 2020 12:48

A small html doc that can be used to test the use of reversed axii with fast images for plotly.

	<html>
	<script src='dist/plotly.js'></script>
	<body>

	<div id='myDiv'></div>

	<script>
	var source = "data:image/png;base64,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

almarklein / three_cube.html

Created October 12, 2022 13:05

ThreeJS sandbox

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<title>three.js sandbox</title>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
	</head>
	<body>
	<div id='infodiv' style=""></div>
	<script src='https://cdn.jsdelivr.net/gh/mrdoob/three.js@dev/build/three.js'></script>

almarklein / timestamp_speed.py

Last active March 14, 2023 22:15

timestamp speed and precision

	from datetime import datetime

	import numpy as np

	import time

	n = 100000


	mark1 = datetime.now()