| import numpy as np | |
| def peakdetect(y_axis, x_axis = None, lookahead = 500, delta = 0): | |
| """ | |
| Converted from/based on a MATLAB script at http://billauer.co.il/peakdet.html | |
| Algorithm for detecting local maximas and minmias in a signal. | |
| Discovers peaks by searching for values which are surrounded by lower | |
| or larger values for maximas and minimas respectively | |
| from skimage import io, filter, morphology, segmentation, measure, img_as_float | |
| import os | |
| # Download the image | |
| if not os.path.exists('cell.png'): | |
| print "Downloading snowflakes image..." | |
| import urllib2 | |
| u = urllib2.urlopen('http://people.sc.fsu.edu/~jburkardt/data/tif/cell.png') |
| { | |
| "metadata": { | |
| "name": "" | |
| }, | |
| "nbformat": 3, | |
| "nbformat_minor": 0, | |
| "worksheets": [ | |
| { | |
| "cells": [ | |
| { |
| license: gpl-3.0 |
In the example we're looking at historical weather data for New York provided by intellicast.com and wunderground.com. Inspired by weather-radicals.com.
This example uses scales to roll your own radial projection by mapping out the x, y, and r positions. If you are creating a line or an area you can use d3's convenience functions d3.svg.line.radial and d3.svg.area.radial but this is a method you can use if you want to use different graphical elements in a circular layout.
| license: gpl-3.0 |
| license: gpl-3.0 |
Based on D3.unconf() 2017 badge, added moving text
Experimenting transitions with the chord diagram layout to show blood flow between the four chambers of the heart during a contraction cycle.
The heart consists of four chambers in which blood flows. Deoxygenated blood (blue color) enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated (red color). The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium blood flows into the left ventricle. The left ventricle pumps the blood to the aorta which will distribute the oxygenated blood to all parts of the body and become deoxygenated again.
Notes:
Using a new updatable chart format. Update functions are made accessible to the caller, handing over chart controls with full functionality to the caller in a modular manner. Data binding is done with method chaining, like any other configuration variable, and can be changed after initialization. This allows for changes to be rendered in the context of chart history, leveraging D3's transitions and update logic.