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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
Dr. Akinwumi Adesina, President, African Development Bank Group; Gerda Verburg, Diplomat, Christian Democratic Appeal (CDA); Masahito Enomoto, Former Senior Deputy Director Japan International Cooperation Agency (JICA) and the delegates during the AfDB's Annual Meetings 2017 - Developing Africa’s Grey Matter Infrastructure Addressing Africa’s Nutrition Challenges on May 22, 2017, at Mahatma Mandir Exhibition-cum-Convention Centre in Ahmedabad, India.
OLYMPUS OM-D E-M5 Mark II + OLYMPUS M.ZUIKO DIGITAL ED 40-150mm F2.8 PRO
Developed by Adobe Photoshop Lightroom CC 2015.8
Hong Kong at night is stunning for many reasons. Beautifully buildings are highly condensed with layers of colours ranging from the harbour up to the peak. You can take a panoramic view from distance. Or you can take a close up and feel yourself as part of it. Anyway, Hong Kong at night is a unique travel experience on the China travel golden route.
Hong Kong -officially the Hong Kong Special Administrative Region is one of the Special Administrative Regions of the People's Republic of China. Consisting of a peninsula and 236 islands on China's south coast and enclosed by the Pearl River Delta and South China Sea Hong Kong has developed into one of the world's top financial centres It has a highly developed capitalist economy, and has a "high degree of autonomy" in all areas except foreign affairs and defence. Renowned for its expansive skyline and deep natural harbour, its identity as a cosmopolitan centre where east meets west is reflected in its cuisine, cinema, music and traditions.
Consultative workshop towards developing a National Action Plan for Disaster Risk Reduction 2019-2023, Phnom Penh, April 5 2019. Photo credit: Manuth Buth/UNDP Cambodia
Read more: www.adaptation-undp.org/linking-global-resilience-agenda-...
This time the coffee is for developing. making Caffinol. www.lucidcommunication.com/2014/04/30/sipping-chatting-an...
my neighbor found a nice polaroid spectra at a yard sale. It came with film. :) $5. Could not resist. Now if she finds any film at yard sales I will have a camera for it. This was one of the shots I took with the film. Well, before it developed all the way. I liked the ghostly look of her. Looked like a miraculous Mary sighting in a water stain or something.
Camera: Pentax645+75mm F2.8
Film: Fuji provia 100F
develop: Naniwa Color Kit-N
scanner: Epson GT-X970 (without color revise)
photograph condition: standard（+0）
develop conditiion: standard time
(same time as naga film standard developing time)
25 Harman Redscale Phoenix 125 ISO Film Bury St Edmunds Taken On Minolta Dynax 5 Minolta 70-210 F3.5-4.5 Sigma 24mm F2.8 Lenses Developed With Bellini Foto C41 3-3-2025
Developped a roll of Lomo Redscale XR from the summer recently, I quite like the results... although scanning them in with a digital camera does ruin the quality a little :(
Taken during the Open House London event.
Tetenal C-41 Development Kit, standard developing
I collect old cameras, and my bff gave me this 1948 Ansco Shur Shot Jr. before she moved to Kenya. I found a roll of 120 film inside when I started restoring it. To develop or not to develop?
About the camera: It is a simple box camera with an aluminum front and a single-element lens behind the shutter. It has one shutter speed, and the f-stop is fixed somewhere around f/8. Its fixed focus has a range from somewhere around 5 feet to infinity.
These two photos, from winter in Wilsonville, are from my first rolls that i developed at home. I was just happy that I didn't crease the film and that images actually appeared. Can't wait to do more.
camera: hasselblad 500 cm
film: kodak TMAX 400
processed using Ilford chemicals
What if it was not the “poor” Global South that needed development aid but the privileged North instead – and what if it then received such aid from the so-called “Third World”? Ghana ThinkTank starts from exactly that premise, with teams in Ethiopia, El Salvador, Palestine, Morocco, Indonesia, Iran, and Ghana at work developing solutions to “first-world problems.” This turning of the tables has the effect of empowering those who are otherwise thought to be in need of help, enabling them to contribute their own knowledge, innovation, creativity, skills, and experience. Mexican migrants, for example, are advising self-appointed US border guards in Texas, and the Moroccan riad concept (shared gardens and courtyards) is being proposed as a response to increasing social isolation in Detroit.
For further information please visit:
ars.electronica.art/keplersgardens/en/digitalcommunities/
Credit: Ghana ThinkTank
After this rubber vase. Because the only thing sillier than a rubber vase is a paper one.
From a circle, heptagonal symmetry. Crease pattern.
The Stations
Barnett Newman
National Gallery of Art/East Wing
October 15, 2016
One of the great figures of the abstract expressionist movement, Barnett Newman was an intellectual, developing his ideas in his painting, sculpture, and writing. Born and raised in New York, Newman took classes at the Art Students League while in high school and college. At New York's City College he majored in philosophy, graduating in 1927. In the course of the next fifteen years he operated his family's clothing manufacturing business, was a substitute art teacher in New York high schools, and ran as a candidate for mayor in 1933. His platform advocated civic programs for the arts as well as anti-pollution measures. He also studied the writings of Henry David Thoreau and the anarchist Peter Kropotkin and became interested in botany, geology, ornithology, and tribal art. Believing that all earlier twentieth-century painting styles were obsolete, Newman destroyed most of his paintings from the 1930s and early 1940s.
In the spring of 1945 Newman set down a number of his developing ideas about the proper goals of aspiring abstract painters in various drafts of an unpublished "monologue," The Plasmic Image. There he asserted that between the time of the impressionists and the 1940s, modernist painters had solved the technical problems of the language of painting (color, shape, atmosphere) and should go on to transcend such decorative aspects of art to project concepts.
When he started to paint again in the mid-1940s, Newman sought a new style of mystical abstraction, and it was at this time that he made his first works using his signature vertical elements, or "zips," to punctuate the single-hued fields of his canvases. In 1948 he, along with Mark Rothko, Robert Motherwell, and others, founded the Subjects of the Artist School as a means for exploring and promulgating ideas about the inspiration, subjects, attitudes, and possibilities of abstract expressionism. Although Newman's first solo exhibitions in the early 1950s met with ridicule, by the end of that decade his work was well-accepted and
National Museum of the US Air Force
Developed in the mid-1950s, the V-750 Dvina was the first effective Soviet surface-to-air missile. The Soviets used it to shoot down Gary Powers' U-2 over the USSR in 1960 and Maj. Rudolph Anderson's U-2 over Cuba in 1962. The missile was better known by the NATO designation SA-2 Guideline. The Soviets began exporting it to many countries worldwide in 1960, with many remaining in use into the 21st century.
North Vietnam began receiving SA-2s shortly after the start of Operation Rolling Thunder in the spring of 1965. With Soviet help, they built several well-camouflaged sites, regularly moving SA-2s and their equipment among them. The North Vietnamese also ringed SA-2 sites with anti-aircraft artillery (AAA), making them even more dangerous to attack.
SA-2 Site
The SA-2 did not operate alone, but as part of a complete system. A typical SA-2 site in North Vietnam had six missiles on launchers, control and support vans, a Spoon Rest acquisition radar, and a Fan Song guidance radar.
The Spoon Rest radar detected incoming aircraft at long range (as far as 70 miles), providing location data to the system computer.
The Fan Song guidance radar performed two functions: target acquisition and missile guidance. It acquired as many as four targets before firing. After launch, it guided up to three SA-2s against one target. (The North Vietnamese sometimes placed the radars away from the missiles to make the site harder to destroy.)
The SA-2 missile had a solid fuel booster rocket that launched and accelerated it, then dropped off after about six seconds. While in boost stage, the missile did not guide. During the second stage, the SA-2 guided, and a liquid-fuel rocket propelled it to the target.
How Radar Works
Radar (Radio Detection And Ranging) can be likened to shouting in a valley and hearing an echo in return. A radar emitter sends out radio waves, which hit an object and reflect back to a radar receiver. Much information can be gained by calculating the time and angle of the reflected radio waves.
Basic radar can simply indicate the presence of an object from several miles away, while more advanced radars can provide the speed, altitude and heading of an aircraft. Radar information can be used in many ways, including providing early warning of an attack, directing defensive fighters, aiming anti-aircraft artillery fire and guiding missiles (including SAMs).
SA-2 Guideline (V-750VK Dvina) Surface-to-Air Missile and Launcher
The reusable SA-2 launcher rotated 360 degrees and typically raised the missile between 30 and 60 degrees for launch. Removable wheels (not displayed) allowed the launcher to be moved quickly. In fact, North Vietnamese SAM crews could pack up and move a site in about four hours.
One vital capability of the Wild Weasels was being able to identify and immediately strike an active site. Before the Wild Weasels, the enemy often moved out of a site by the time a strike force was put together to hit it.
TECHNICAL NOTES:
Range: Minimum 5 miles; maximum effective range about 19 miles; maximum slant range 27 miles
Ceiling: Up to 60,000 ft.
Warhead: 288-lb. blast-fragmentation
Speed: Mach 3.5
Weight: 4,850 lbs.
ANTALYA, TURKEY - MAY 25: Fags of the United Nations and Turkey wave outside the Titanic Hotel where Midterm Review of the Istanbul Programme of Action, during the flag raising ceremony for the flin Antalya, Turkey on May 25, 2016. The Midterm Review conference for the Istanbul Programme of Action for the Least Developed Countries will take place in Turkey's Antalya from 27-29 May 2016. Murat Kaynak / Anadolu Agency
Alnmouth, Northumberland.
Vivitar Ultra Wide and Slim on Fujicolor C200, home developed in Tetenal C41 Rapid.
First attempt at developing without bleach aka bleach bypass but I don't think it worked. Camera used Canon BF-10 26mm fixed focus Fujifilm 200 200 ISO developed in Bellini Foto C41 11-5-2023
Since I'm starting to play with some sub-miniature cameras, I realized I have no way to develop the film from them.
I searched the web and found that the lomography website has great instructions on how to modify a Patterson film reel to fit 16mm film. Great idea, It works like a charm. Luckily, I had a spare reel lying around.
Shown here is the reel loaded with a scrap of 16mm film. You only need 170 mL of chems to process a roll.
All the things I ordered to be able to develop black and white film came in today (February 10th, 2010). Pictured here is the Kodak D-76 developer and Kodak fixer, along with a Patterson Universal tank and a good thermometer. I also got some Ilford Ilfostop stopbath and Kodak Photo-Flo 200 for the other steps. Also, I got some Ilford ID-11 and Ilford fixer so I could try them out and compare the results with the Kodak chemicals. While I was at it, I also added in a generous selection of black and white films, 100 and 400 ISO, in 135 and 120 sizes. Since the Patterson tank can develop both, I have everything I need now.
It's been almost 30 years since I last developed film and I'm anxious to get my hands back into the process. As of midnight, I had my first roll of Fomapan Classic black and white film developed and hanging to dry. Can't wait to scan the negatives and post them here on Flickr.
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This project is being developed on Farrer Road. It is very near Holland road and is just 10 minutes’ drive away from Orchard road. Nearby schools, MRT stations, shopping malls, and other facilities make Wilshire Residence a very feasible option. Highways are connected to the residencies too. The Pan Island Expressway (PIE) and Ayer Rajah Expressway (AYE) offer the pathway from this residency to other major cities.
Education is always a top priority. Residents of Wilshire Residence can opt for the best schools for their kids without having to worry about distance. With one to two kilometres away, there are primary schools such as Nanyang Primary (1km) and Raffles Girls’ Primary, Queenstown Primary and New Town Primary School. Secondary school that are within a short drive away include St Margaret’s Seconday, Singapore Chinese Girls’ School and St Joseph Institution.
The Wilshire Residences will be a 12-storey building comprising of 2 residential towers. There will be 4 units on each floor, spread in 2 lift cores. Units on all sides offer a view. Some will look over the Botanic Garden, others will open into Victoria Park, while some will be facing Holland Village. Some units are described as typical whereas the others are categorized as penthouses.
Developed by: Hans Berger
Year: 1924 (however this device was only imported to South Africa in the late forties and early 50’s)
The Electroencephalogram measures an individual’s brainwave activity and is used in neurology, neuropsychology, and general medicine.
Developing thunderstorm, photographed from Dead Horse Road, southwest of Chadron, Nebraska, on May 16, 2022.
On December 8th, 2012 P4K and EPN launched the Farmers of the Future program officially in Gueriguinde. Both the Minister of Education and the Minister of Livestock participated in front of a huge crowd of 400! This program is being piloted in three schools in Libore, with the goal of changing the mindset of children about agriculture -- teaching them that it is a business not merely a way to subsist.
From September 15th to 19th the second of the four JCOM Masterclasses, educational programmes aimed at an international audience and held by international experts takes place. For the 20 selected participants this interactive course represents a unique opportunity to discuss the state-of-the-art of science exhibition development with particular focus on the possible different design approaches, helping participants to reflect on the relationship between the different media, contents and visitors' experience.