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This is Andrew Dupont, who is an amazing coder of the Javascript variety. He's the main contributer for Prototype, which most of you won't know, runs your websites. He's in town from Austin for SproutCore madness. He quite possibly is cooler than you. :)
Strobist info: Nikon SB900 on 1/2 power, bouncing through a 43" umbrella, hand held by Faruk, in front of team in the middle, about 2ft above our heads and 2ft to the front.
Quick preview of a top secret project involving networks, dataviz. Everything encapsulated in some javascript/canvas goodness
killingclipart.com/testing/monster2/
Playing around with basic animation using the GreenSock javascript engine. When I programmed in AS3 back in the day I used GreenSock. I am VERY impressed with that this javascript animation engine can do... I'm ready to start playing around with more complex tests now.
asistentes al taller Desarrollo de aplicaciones para SmartPhones con HTML/CSS y Javascript impartido por Julián Beltrán en el espacio CAMON de Alicante.
This is a silly prototype I made showing flash video overlaying HTML, and synchronising javascript animations and sound effects to a video timeline. The lower left block is video, the lights (including those overlaying the video) are HTML, CSS and Javascript.
It gets a little crunchy toward the end given CPU load etc.
ZoomCharts at DevClub.lv: Developing a Javascript SDK
On January 15, 2015, ZoomCharts Co-Founder and CTO Viesturs Zariņš presented at DevClub.lv - a community of Latvian IT specialists that gather monthly and host free talks, presentations, and events to allow the local IT community to share knowledge, network, and communicate. Zariņš discussed the unique challenges faced in developing JavaScript SDK.
Here is a brief overview of his PowerPoint presentation on ZoomCharts, the world’s most interactive data visualization software that will support all your data presentation needs with incredible speed.
What is ZoomCharts?
What defines ZoomCharts advanced data visualization software? It is NOT another HTML5 charts library. It is:
- Interactive
- Fast
- Touch enabled
- Supports big data
A long time ago
DOS 6.2 allowed for:
- 320x240x8bpp
- Direct access to pixels on screen
- Assembler for performance
Today, the Web has finally caught up in the graphics department. Now, we have access to:
- Multiple browsers and rendering technologies
- Multiple resolutions
- Performance that varies by browser and device
Development setup:
- We write in JavaScript
- Commit to GitHub
- Build system in JavaScript
- Debug in Chrome
- Run automated tests
- Like WebStorm (and Vim)
Graphics:
Canvas (fast)
SVG (slow)
WebGL (>50%)
Interactive animations:
Zoom in and out of the graph, drag and drop data, all with your mouse or trackpad.
Graceful degradation:
High FPS (frames per second) lets you scale graphics with low image degradation.
Third party libraries:
- Raphael
- Hammer.js
- Leaflet
- Moment.js
Challenges:
- Responsive design: layouts can shift and look nice on desktop screens vs. not so nice on vertical, mobile screens
- Big screen resolutions: uses devicePixelRatio for sharp rendering, but no hardware acceleration beyond 2048x2048
- Safari compatibility: with 100% CPU, input events are blocked and browser locks up; strange code offers fixes
- HTML on canvas: DOM is slow; basic HTML markup must be parsed and rendered manually; text caching helps
Support:
- Process: TrialSupportBuy
- 1 day issue resolution
- #1 Tell me what I did wrong
- #2 Can you do…
Testing:
- Automated tests on every GIT push
Automatically:
- Compare images
- Record performance
- View errors in console
Interactive testing:
- Next step: record and playback
BrowserStack:
- Interactive mode
- Automated: Selenium API
Debugging:
Chrome Developer tools (F12)
- Debugging
- Profiling
- Timeline
Remote debugging available: developer.chrome.com/devtools/docs/remote-debugging
Future:
- More charts
- Extension API
- Memory allocation tracking
- WebGL
We are looking for statically-typed language:
- Error checking
- Performance
- Superior minification
- Easy to write and read
- Easy to call from JS
Building
Custom build script:
- Compile
- Minify
- Extract documentation
- Embed customer data
Check out ZoomCharts products:
Network Chart
Big network exploration
Explore linked data sets. Highlight relevant data with dynamic filters and visual styles. Incremental data loading. Exploration with focus nodes.
Time Chart
Time navigation and exploration tool
Browse activity logs, select time ranges. Multiple data series and value axes. Switch between time units.
Pie Chart
Amazingly intuitive hierarchical data exploration
Get quick overview of your data and drill down when necessary. All in a single easy to use chart.
Facet Chart
Scrollable bar chart with drill-down
Compare values side by side and provide easy access to the long tail.
ZoomCharts
The world’s most interactive data visualization software
#zoomcharts #interactive #data #interactivedata #datavisualization #interactivedatavisualization #chart #graph #charts #graphs #Javascript #JavascriptSDK #DevClubIV #Latvia #PowerPoint #PowerPointpresentation #fast #bigdata
Sometimes I find visual context helps when writing code. This is one example of a scratchpad for random thoughts.
Usually when I'm thinking in terms of coordinates, rows and columns or pixels as they relate to a grid pattern like this, it helps to draw outlines showing how the numbers correlate to the visuals.
In this case it was the "grid" (columns and rows of thumbnails) that I was working on. I knew scrolling, selection and rearrange would be important interactions that would need to be hashed out, once the photo items themselves has been defined as objects in JavaScript.
Later, primary controllers to be defined in JavaScript included the "display" (responsible for the current view), selection, events and state (sessionData) along with a few performance / browser limitation notes.
More fun background details on the grid are planned for a future code.flickr blog post.