D3.js Jobs

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Hourly - Intermediate ($$) - Est. Time: 1 to 3 months, 10-30 hrs/week - Posted
We are a data visualization company and need an experience JS developer to help us create: - Dashboards - Graphs - Views for datasets Requirements and past experience: Experience translating requirements and mockups into fully functioning features using Javascript and HTML5 / CSS3 Experience with jQuery and knowledge of javascript MVC frameworks Experience creating rich and interactive data visualizations using JS libraries such as D3 Experience building queries for MySQL, ElasticSearch knowledge is a plus Experience working in environments with Ruby, Rails, gem management, bundler, etc. JRuby knowledge is a plus Experience with CSS preprocessors Experience using project management tools and version control systems such as GIT Experience with logic-less templating such as Mustache Understanding of web standards and best practices Experience troubleshooting cross-browser compatibility issues Appreciation for good design Attention to the small details skype: enormousalex
Skills: d3.js
Hourly - Expert ($$$) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
The working environment is LAMP with JavaScript, D3 and jQuery. There are two parts to the request: 1) I need a general-purpose wrapper that can target a D3 chart and cleanly and simply save the chart to a PNG or JPEG (user option). The emphasis should be on simplicity, and the fewest needs for external libraries, canvas, or other hacks. The point here is to get something I can use in production but that also helps me understand how it's done. The functionality should let the user click a "download to png/jpg" button, the D3 chart is rendered to the appropriate image format, and the user is prompted for a Save As location. Ideally, I imagine that I could locate this button near the chart, and the button would execute a JavaScript function that accepts two parameters: the selector ID for the DIV containing the D3 chart, and an initial filename for the image file. The chart should be saved in its current state. In other words, if the user has clicked a chart button that changes the colors, scales, or applies other transformations, those visual changes should be reflected in the saved image. If there is a mouseover key tip on the chart, it should also be captured. In other words, the entire SVG space should be captured to an image file of the same dimensions. 2) The second part of the request is that I would like to run the screen capture of the D3 chart on the server, from a cron job. Obviously in this concept, there is no user so no chart options would be executed, and there is no browser so the JavaScript runs on the server and the image would show the chart according to its initial visual design. So imagine a PHP script that runs from a cron task; it gets some data, it plots a curve, and then it should save an image of that chart to disk so that another process can grab the JPG/PNG and include it in an email. I think this requires node.js to run server side, but please explain if you think there is a different or better approach. Because there is no user interface, the web folder/filename should be taken as a parameter to the function so that I can know where the images are created. The goal in this context is that I would like to build a D3 chart, then have a cron job create an image file from the chart every 15 minutes when the MySQL data is updated. FOR EXTRA CREDIT It would be really call if your function would let me pass a third parameter - a scale size - that would capture an image from the D3 chart that is scaled up/down for better/less size and resolution. I may have a D3 chart that is 400x200 on the screen, it would be really neat if I could tell your function to produce an image file that is 800x400 for example. FINAL NOTES In your quote, please estimate the number of lines of code that you think are required and a give me a basic understanding of your approach to the problem and how I would implement the use of it in my PHP/JavaScript application. In my ideal, I would simply add a button next to a chart, and the button would call your function with the ID of the DIV that should be captured, the filename of the image file and, for extra credit, a scaling factor that make the image larger/smaller than the D3 chart itself.
Skills: d3.js JavaScript Node.js
Fixed-Price - Intermediate ($$) - Est. Budget: $2,000 - Posted
Hello, For a dashboard creation and integration with DB through json, we are looking for a dojo framework developer. Skill Javascript Html CSS Dojo framework D3 JS framework - advantage Russian language - advantage If you are a free for a 3 month project please apply Thanks
Skills: d3.js CSS Dojo Toolkit HTML
Hourly - Expert ($$$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
I currently use dygraphs to create a stacked step plot graph. dygraphs, however, has its limitations when it comes to stacking positive and negative numbers. I have spent a lot of time researching on this problem and I don't believe it can be solved using dygraphs. That is why I am now ready to try alternative plotting methods. In the attached you will find an R Script that draws the dygraph graph. You need to install the three R packages and then source the R script. The graph will then be displayed. I have also attached a word document where you see how I would like the graph the look. Dygraph has a lot of very nice features (range selector, zoom on graph, hover on mouse-over, the ability to check and uncheck series, etc.) and I want to keep all of these functionalities even if an alternative to dygraph is used. If the freelancer solves this problem here, there will be more work to come.
Skills: d3.js JavaScript
Fixed-Price - Expert ($$$) - Est. Budget: $1,700 - Posted
We are looking for a Front End developer that could help us design the front end for an app that helps companies visualize demographic, economic and social data for any point in the map and predict sales on any location. This product has been hugely successful because of its capabilities but now we want to step up our UX/UI from a design point of view. Truly, if you want to work in an exciting product, this is the one. It is a single page app, so it wont be very complicated. Mainly, it will cosnsist on designing a menu and data dashboard, which hold some layer controls for the map, some buttons and some graphs created with C3. This is a project where you will be able to be creative and design a data vis tool that will help a lot of companies.
Skills: d3.js CSS HTML5 JavaScript
Fixed-Price - Intermediate ($$) - Est. Budget: $150 - Posted
Hi, I want to create a small bar chart with slider that can be used instead of a table scroll. (it will sit on top of a table and user will zoom in out, and table values will change accordingly) The data format is: timestamp, eventType Reach out to discuss further details.
Skills: d3.js
Hourly - Intermediate ($$) - Est. Time: Less than 1 month, 10-30 hrs/week - Posted
Graphs and Tracks was an award-winning program in physics education in 1989. I would like to have it rewritten as a web app that would run on Chrome, Firefox, IE9 and Edge. My hunch is that it would be implemented in Javascript, D3, SVG, HTML and CSS. One important requirement is that the code must be generously commented, so that as I learn these technologies, I will be able to do some maintenance myself. I don't expect all features of the original program completed, but rather a good solid framework. For screenshots of legacy program and Specifications document, see https://github.com/davidtro/gt
Skills: d3.js CSS JavaScript
Hourly - Entry Level ($) - Est. Time: 1 to 3 months, Less than 10 hrs/week - Posted
I am looking for a web UI designer/developer with solid PHP experience preferably under Linux. The first step i to craft a couple of designs and present it to us. Then we will make a decision to use a specific design. The intent of the website is to control/monitor a medical device. Our tools technology stack includes PHP, MySQL, Apache, Linux, HTML, CSS, , Python, javascript, three.js The successful candidate will be self-motivated and able to convert requirements to working software solutions in an agile fashion. Also, ability to document the work and guide other members in the staff is important.
Skills: d3.js PHP Three.js