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View get-selected-text
var getSelectedText = function() {
var txt = "";
if (window.getSelection) {
txt = window.getSelection().toString();
} else if (document.selection && document.selection.type != "Control") {
txt = document.selection.createRange().text;
}
return txt;
};
@cmdoptesc
cmdoptesc / color-palettes
Created Aug 8, 2013
colors schemes combinations
View color-palettes
http://design-seeds.com/
http://www.colourlovers.com/palettes/most-loved/past-month/
@cmdoptesc
cmdoptesc / Readme.md
Last active Mar 12, 2016
muniNow Quick Demo
View Readme.md

muniNow Demo

muniNow aims to be a nicer NextMuni by giving users the ability to see when the soonest Muni bus is arriving at a glance.

Live demo on Bl.ocks.org

Powered by D3, built at Catalyst/Hack Reactor as a personal project. And many thanks to Mike and Adnan.

al lin, aug. 2013

@cmdoptesc
cmdoptesc / Readme.md
Last active Mar 4, 2018
JavaScript D3: Drawing Concentric Arcs
View Readme.md
@cmdoptesc
cmdoptesc / Readme.md
Last active Feb 12, 2018
JavaScript D3: Arc tween transitions using attrTween and attr methods
View Readme.md

D3: Arcs Tweening Animation

view on bl.ocks.org

Click on the grey circles. The green arcs will transition using attr, whereas the red ones will use the attrTween method.

If you have not seen/read Bostock's arc tween example, it's probably the best place to start. Secondly, I've posted up a basic example of drawing static, concentric arcs (gist), which might be helpful before adding on tweens/animations.

Below is some annotated source code from my experience playing with arcs. The biggest issue I came across was understanding the role of the arcTween helper function in relation to attrTween. Unlike attr, which takes a value as its second argument, attrTween requires a helper function, arcTween, which will be called during the intermediary animation ticks. This method was used for my [muniNow project](http

@cmdoptesc
cmdoptesc / nodejs-express-cors.js
Created Aug 21, 2013
Node.js Express CORS settings / cross origin resource sharing / XMLHttpRequest Origin is not allowed by Access-Control-Allow-Origin
View nodejs-express-cors.js
// Express CORS middleware.. so much easier than trying to get Restify to work
var allowCrossDomain = function(req, res, next) {
res.header('Access-Control-Allow-Origin', '*');
res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE');
res.header('Access-Control-Allow-Headers', 'X-Requested-With, Accept, Origin, Referer, User-Agent, Content-Type, Authorization');
// intercept OPTIONS method
if (req.method === 'OPTIONS') {
res.send(200);
View index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.graticule {
fill: none;
stroke: #777;
stroke-opacity: .5;
stroke-width: .5px;
}
@cmdoptesc
cmdoptesc / quicksort.js
Created Sep 9, 2013
QuickSort In Place (in JavaScript)
View quicksort.js
// quicksort using new arrays is easy, but surprisingly, there weren't too many examples
// in javascript of in-place quick sort...
// the outer function is simply just a wrapper that copies the original array;
// you can just use lines 12-37 if preserving the original array isn't important
function quickSortInPlace(unsortedArray) {
var unsorted = unsortedArray.slice(); // copy the original array
@cmdoptesc
cmdoptesc / Readme.md
Last active May 15, 2019
D3: Open Hours (.csv parsing)
View Readme.md

D3: Open Hours

view on bl.ocks.org
github repo

D3 visualisation utilising D3's text/CSV to read/parse a CSV file with restaurant information and display which restaurants are currently open.

Users can drag the time (red line) to display restaurants open at other hours.

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