I was looking for a solution where I could display live data coming through web sockets or simply by adding items through the console to the data array and when data exceeds lets say 20 points add scrollbar which would scroll data back and forth for analysis.
Can anyone help me and direct to which library is capable of doing that because it's time burning to find the one?
Thank you
Smoothie Charts does offer some live data themes.
We were able to create a demo with a data feed, a scroll bar in ZingChart. One thing you may not have realized yet is that if the data continues to feed, it could be difficult for your users to actually make use of the scroll bar.
In this demo, we added a link that alerts the user the feed is paused, and allows them to restart after they are finished using the scroll bar: http://jsbin.com/mutid/2/edit
I am on the team at ZingChart and I'd be happy to answer any questions about this demo or the library, but I thought that little UX morsel was also useful to your scenario.
Check out this library Smoothy Charts - A JavaScript Charting Library for Streaming Data. It is a simple, small and dependency-free library for displaying smooth live time lines.
You may take o look at Highcharts as well, even it's not free for commercial use.
If you like to try something from scratch Raphaeljs and Paperjs and just great vector graphics libraries.
Related
One of the project requirements for my new java web project is to have dynamic charts that will load really fast.
While in discussion , it was asked if we could implement charts without using images ie without loading jpg, png files etc. Also files like pdf cannot be used.
Basically my question is
Can charts be implemented in jsp/javascript without using images,pdf etc ?
ie even api's used should not provide end result as image,or pdf etc.
I did not say no right away , as I have implemented charts in console applications in C on screen. Can we do something like that on a webpage ? ie show a graph by drawing on screen dots,lines,circles etc.But it should be possible inside a div ?
PS : Comments and answer from Lucien Stals helped to understand that the technology i was looking for was svg.
I am looking for some nudging in the right direction from some of the experienced java , javascript programmers in SO.
Many JavaScript chart libraries exist that render in HTML5 on your page. You can probably find one that meets other requirements or wishes of your team, since each have feature areas in which they excel. http://www.zingchart.com has also been adding many ways to include them in your charts if you decide to go with something other than vanilla JavaScript (jQuery, Angular, etc). Full disclosure: I'm on the ZingChart team. I can help you weigh the pro's and con's if you find a few that catch your interest.
A simple bar chart would be easy enough to create with DIVs and CSS.
Anything more complicated and I think you are talking SVG, which could be drawn using http://raphaeljs.com/, or maybe http://d3js.org/ .
Also look at the HTML5 canvas element.
I would suggest to use Google Chart Framework. I did use it in past for my project and it is good.
You can check highcharts http://www.highcharts.com/ . This can be integrated easily with your javascript .
Most of this js chart plugins expects data in array or json format and can dynamically render the charts.Easy to integrate in the web pages
jgccharts.js Jquery charts
jquery charts plugin
I'm building a modeling tool that contains 2 sets of sliders -- one set that changes the amount per month payment (at top), and one set that shows user the date their debt is paid off (bottom), effectively so that changes to one can be seen in the other:
modeling tool http://doufeel.com/model.png
I was able to use jQuery UI slider to generate the payment data that creates the line graph at the bottom (using D3) but now I realize that I will probably need to create both sets of sliders in svg using either D3 or Raphael to make this work smoothly. I'm hoping to find someone who has addressed this, perhaps created something similar and might be able to advise on the best approach. Thanks in advance!
Need to support older browsers? Use Raphael. If not then D3.
If you access your mobile me account online with Safari, you can select an icon and login directly to selected service, great feature btw.
But if you access the same page using other browser like firefox or Chrome, you will see a gorgeous login page with a big, no huge cloud in the middle (the MobileMe logo) and interesting lighballs comming out of it.
Here's the link:
https://auth.me.com/authenticate?service=mail&ssoNamespace=appleid&formID=loginForm&returnURL=aHR0cHM6Ly9tZS5jb20vbWFpbC8=
And the greatest thing is that you can mouse over those little light balls and they follow your mouse movement.
Its just beautiful and i have never seen anything like that in Javascript. And i couldnt understand by looking at their code, how they did it. Of course their javascript is compressed so i couldn't look at it, but in the markup those shiny lights are just a bunch of canvas tags.
Does any one have an idea of how to make something like that? Its probably way beyond my javascript skills but it would be great to add such an effect to one of my projects.
Thanks in advance for all your suggestions ;)
that takes a lot of skills. I believe its achievable with processing.js
http://processingjs.org/
Take a look at this [quote]:
So, how is this eye candy accomplished? Through over 6000 lines of
(unminified) JS. MobileMe usually uses SproutCore for its
applications, but after looking through the source code, I didn’t find
a single reference to it. There did appear to be some resemblance of
a library being used in the login page, however, but I think it is
pretty custom. There appeared to be a class for each of the visual
components on the screen, at least one if not two separate animation
libraries (one 2d and one 3d), a particle rendering library, and
libraries for dealing with canvas drawing and DOM manipulation.
So it looks like it was custom made. You can read more here: http://badassjs.com/post/1649735994/the-new-mobileme-login-page-has-some-badass-js
I hope this helps.
I want to build a tool (with HTML5, JS and CSS3), which helps customers to arrange elements on a website mockup (e.g. text blocks and pictures). I want to save the position of these
elements in order to reconstruct the whole mockup website later.
Maybe a grid system would be the best?
alt text http://img.skitch.com/20090817-t4p54kbxw3rj58mkmqxspj4qch.png
I would be happy to get some ideas on approaches for this challenge. Are there any similar projects, I should take a look at?
Regards,
Stefan
YUI has lots of widgets for this sorta thing with lots of examples.
Drag & Drop: Examples
Especially this example
Drag & Drop: Using Interaction Groups
All you would have to do register a listener on the drop event to send an ajax request to the server and save the xy co-ordinates.
ALSO, if you want to do resizing as well
Resize Utility: Examples
They have a few really neat examples, including this image cropper
ImageCropper Control: Real Time Crop Feedback
The jQuery framework would help you in synchronizing the JS and DHTML events. As far as other projects that use this, I'm not aware of any, but a grid model seems like a good way to go. Just make sure it's more precise than the 125px you currently have :)
EDIT: The website that was mentioned in the DHTML book I mentioned in my comment was http://www.panic.com . You can take a look at their JavaScript code for some inspiration, as they implement a drag and drop system for downloading their products.
Not sure if it'll help, but my "PanelManager" might make things a little easier (if you're not already using a larger framework with similar functionality):
DP_PanelManager
"Panels" are just normal DOM elements with extensions for common actions/modifications (moving, resizing, etc). Panels can exist within one or more "PanelManagers" which allow you to treat them as a single unit (sorting, looping, etc).
Look at the example "Drag-and-Drop with Ordering" for a simplified example of (what I think) you're looking for. You would then need to do the same kind of looping to save whatever information you want (probably just name and position).
In any case there might be some code there you can rip out - feel free to fold, spindle and/or mutilate.
As a keen windsurfer, I'm interested in how windy the next few weeks are going to be. To that end, I've been writing a little app to scrape a popular weather site (personal use only - not relaying the information or anything) and collate the data into a single graph so that I can easily see when's going to be worth heading out.
I have the back end working but need a way to display the data. My scraper currently gives me two series of data which tell me how strong the general wind is and how strong it's likely to gust to. What I'd like to do next is display those two data sets as a pair of lines in a graph and shade the region between them.
I was considering using something like the flot library to display the data. The only problem is that I can't see a way to shade an area between two lines?
If anyone has suggestions of how to do this in flot or other libraries or graphing techniques (I have DJango on my server so anything pythonic or javascripty should be fine), I'd be interested to hear them. Ideally this will be a javascript solution to avoid having to serve up images.
Take a look at the Google chart API's. They make this sort of thing pretty easy. Without some example code, I would have a hard time giving you an example, but Google has nice one on the docs.
You should check out Dojo. It looks like it'd be pretty easy for you to do, just plot the bottom line with the same fill color as the background. That should get you the effect you're going for.
http://dojocampus.org/explorer/#Dojox_Charting_2D
I'd use open flash chart, you just have to create a JSON with the data and then you've to all the flashy coolness in your page....
http://teethgrinder.co.uk/open-flash-chart-2/