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ashleydavis / example-vega-lite-chart.json
Created August 10, 2017 10:08
Example vega-lite chart with two time series and multiple layers.
{
"$schema": "https://vega.github.io/schema/vega-lite/v2.json",
"data": {
"url": "https://vega.github.io/vega-lite/data/seattle-weather.csv"
},
"layer": [
{
"mark": "line",
"encoding": {
"x": {
@ashleydavis
ashleydavis / server.js
Created December 7, 2018 00:17 — forked from bencentra/server.js
An HTTPS server for static content (Node.js)
/*
This module creates an HTTPS web server and serves static content
from a specified directory on a specified port.
To generate a new cert:
openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365
To remove the passphrase requirement:
@ashleydavis
ashleydavis / prototype.ts
Last active March 5, 2019 08:06
A prototype multi-core task processing API
/*
This a prototype / pseudo-code in TypeScript for a new multi-core task scheduler that I'm planning to open source.
This is based on my earlier private code that I've used to munge masses of stock market data and also talked about in my
book Data Wrangling with JavaScript.
To give me private feedback on this please email me on ashley@codecapers.com.au.
The basic premise of this is that we can split up a complex data processing job into mulitple 'tasks' each of
which can potentially run in parallel on a multi-core machine.
@ashleydavis
ashleydavis / example-vega-lite-chart-with-independent-y-axis.json
Created August 21, 2017 05:11
Example vega-lite chart with independent y axis'
{
"$schema": "https://vega.github.io/schema/vega-lite/v2.json",
"layer": [
{
"data": {
"url": "https://vega.github.io/vega-lite/data/seattle-weather.csv"
},
"mark": "line",
"encoding": {
"x": {
@ashleydavis
ashleydavis / example-vega-lite-chart-with-series-that-have-different-scales.vl.json
Last active March 22, 2019 14:12
An example vega lite chart with two series that have two different scales. This shows a problem that the scales aren't independent.
{
"$schema": "https://vega.github.io/schema/vega-lite/v2.json",
"layer": [
{
"data": {
"url": "https://vega.github.io/vega-lite/data/seattle-weather.csv"
},
"mark": "line",
"encoding": {
"x": {
@ashleydavis
ashleydavis / example-vega-lite-chart-with-second-series-on-the-right.vl.json
Created August 11, 2017 01:33
Example vega-lite chart with two time series and multiple layers - the second Y axis is moved to the right hand side of the chart.
{
"$schema": "https://vega.github.io/schema/vega-lite/v2.json",
"data": {
"url": "https://vega.github.io/vega-lite/data/seattle-weather.csv"
},
"layer": [
{
"mark": "line",
"encoding": {
"x": {
@ashleydavis
ashleydavis / Example sales data.json
Last active March 26, 2019 21:52
Example sales data (orginaly from Kaggle - https://www.kaggle.com/kyanyoga/sample-sales-data/version/1)
[
{
"ORDERNUMBER": 10107,
"QUANTITYORDERED": 30,
"PRICEEACH": 95.7,
"ORDERLINENUMBER": 2,
"SALES": 2871,
"ORDERDATE": "2/24/2003 0:00",
"STATUS": "Shipped",
"QTR_ID": 1,
@ashleydavis
ashleydavis / Node.js require hook.js
Last active September 22, 2019 09:16
This snippet of code sets up a hook to intercept calls to require in Node.js. Put this code at the entry point of your app. It's a great debugging tool for Node.js and it even works under Electron!
//
// Original code here.
//
// https://stackoverflow.com/a/41674522/25868
//
const m = require('module');
const originalLoader = m._load;
m._load = function(request, parent, isMain) {
@ashleydavis
ashleydavis / parsing log data.md
Last active November 6, 2019 10:48
An example of parsing log data for later transformation, analysis and visualization with Data-Forge

This markdown was exported from Data-Forge Notebook

Example of parsing log files so you have structured data to use with Data-Forge

First define some test data:




  


  





    


          
    

      

        
        

          

              @ashleydavis
          

          

            
                ashleydavis
                / typescript-compiler.ts
            
            

              Created
              April 30, 2020 08:36
            

              
                An example of using the TypeScript compiler from TypeScript
              
          

        

      

        


      

    
    


        



  


  

        

          
          import * as path from "path";
        

        

          
          import { IDiagnostic } from "./language-code-generator";
        

        

          
          import { readJsonFile } from "../common/file";
        

        

          
          

        

        

          
          //
        

        

          
          // Result of compiling TypeScript code.
        

        

          
          //
        

        

          
          export interface ICompilationResult {
        

        

          
              code?: string;
        

        

          
              diagnostics: IDiagnostic[];