Javascript :: Libraries For Large Data Visualization?
Feb 16, 2011
Are there javascript libraries that can handle large data visualization? I've seen Protovis, but not sure how much data it can handle. Also, how do Actionscript libraries compare to Javascript in terms of performance?More:I've tried Flare, but seems to be slow for my applictaion. Now I'm yet to figure out if it is the rendering or if it is the shaping of data for rendering. I am looking at interactive graphs like the JobVoyager.
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Jun 26, 2009
Are there any good data visualization libraries that you swear by? I'm looking into what is available for the creation of tree-like graphs that represents rounds of competition.
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Jan 9, 2012
my Flex project has grown to over 1 Mb in size in release mode and now I am trying to cut it up into modules.
One of my SWC libraries is fairly large and I want to use it in multiple modules, so I think I can turn it into a RSL? how can I go about turning the SWC library into a RSL? I am building with Flash Builder (Flex).
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Mar 15, 2012
I have been goggling a lot to find anything with link-based data visualization in Flex 4. something like below screen shoot (made using Ravis). Where user can drag these nodes, without removing the links and on double click of any node we can set some properties for that particular node. I found this Ravis (Birdeye), but not much of examples and support is available for that.
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Apr 18, 2011
I've been playing with the visualization API aka dynamic charts and I've found that the example at [URL] does not really work on localhost. That is, Error calling method on NPObject is thrown when a event is clicked (points A and B in the example aforementioned). I suppose that is a security issue on the server end (Google's flash base).Since that jsFiddle code is hosted on a domain, the note at the very bottom of the documentation should not apply:Because of Flash security settings, this (and all Flash-based visualizations) might not work correctly when accessed from a file location in the browser [URL] rather than from a web server URL [URL] .
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Dec 20, 2011
I realize a JavaScript library like jQuery that is specific to the HTML / DOM wouldn't work nor make sense in a Flash ActionScript application. But what about other JavaScript libraries? I was reading that ActionScript is a superset of JavaScript / ECMAScript which is what got me wondering. If it wouldn't use JavaScript libraries "out of the box" could a JavaScript library be adapted relatively easily? Also, does ActionScript support XMLHttpRequest or have a rough equivalent?
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Mar 25, 2010
I am using the flash SoundMixer.computeSpectrum. to make a flash visualization for my music player. It all works inside flash. but if i run it on the internet the visualization does not show up
[Code]...
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Jan 13, 2010
Is it possible to run the .json file which is has status data from twitter and run it with flex to create a visualization of the data ?
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Apr 26, 2010
How do I use [URL] with Flash CS3 in AS3. I don't intend to use Flex.
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Aug 9, 2004
Im trying to create a small data visualization project. i'm wanted multicoloured balls to fall the mouse round the screen and when you click one it brings up data from an xml document. im currently using a image of a ball is there away to generate one in flash so far this is what i have
ball.onEnterFrame = function() {
var xMouse = _root._xmouse;
var yMouse = _root._ymouse;
[code]....
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Apr 21, 2010
I've got a pure AS3 (no Flex) project that uses Flare to display and interact with a data visualization. I just implemented some panning behavior, so you can click and drag the visualization around, and now I'd like to give the user a visual indicator that this is possible, by switching the arrow cursor with a nice grabby-looking hand icon.The user can click and drag at any time except when the mouse is over a clickable node (at which time the cursor swaps to a pointer - this behavior is already in place).
1) Do I need to create my own custom bitmap/sprite or is there a palette of built-in cursors I can use? (I'm not using Flex.)
2) Is there a way to simply replace the default arrow with the pan cursor project-wide, or do I need to attach the swapping to mouse events on display objects? Can I use the stage object to make this behavior apply everywhere?
3) How do I perform the swap? Do I use the Cursor object directly or do I need to get involved with the CursorManager?
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Apr 20, 2012
does anyone know of any alternatives to the flare data visualization framework that is in regular AS3 and not Flex? [URL]..
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Aug 16, 2010
I'm trying to visualize the results of a quiz in ActionScript 3.0.What I would like some input on is how to best link the "filters" (top right corner in attached image) to the data source in a flexible OOP way.The result array now contains both number of correct answers and meta data about the person taking the quiz. The meta data could be both discrete (sex) or continuous (age).
results = [{name: "Lisa", correct: 5, sex: 0, age: 52}, {name: "Peter", correct: 3, sex: 1, age: 32} ... ]
How do I tell the boxes to, for example, change color when I change filter?Should each box object hold its own data or should there be some sort of controller listening to the filter object to dispatch an event and thereafter call a box.setColor method?
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Jan 7, 2011
I built a prototype in Adobe Flex, they (customers) liked it. Everything was fine until they later told me that iPads / iOS needs to be supported too.I checked out Adobe's Packager for iPhone. We're evaluating that and we will know if it works out in a couple of days. (We need to get through Apple's red tape and certificates raj so this angle is delayed by a few days!)
There is a growing voice for using HTML5/Canvas as a technology platform itself. And despite being quite proficient in Flex, I think this makes sense.
I'm in need of a HTML5 library that can:
Render "widgets" i.e. containers with forms and components(this should be easy and possible using POHJC - Plain old HTML,JavaScript and CSS )Provide a Tree like control for laying out some data Provide a Canvas where data structures can be represented as basic shapes Provide drag and drop capabilities between Trees, Buttons and Canvas Provide some sort of Tab Navigator container (I guess JQuery works here) Interact with back-end services (JSON/XML calls will be okay, but mapping directly with back-end entities will be awesome!)Renders on latest versions of major browsers, Android OS and iOS (WebKit for mobile?)
I'm ready to give JQuery & JQuery UI a try. I looked at Sencha / ExtJS but it seems we need to maintain two code bases one for normal browsers and the other for mobiles (is that correct?)Single code base, I don't want to suggest to them that multiple code bases for the client need to be maintained. That's a last resort option and would lead to complete ruling out of HTML5 with Flash apps and native apps being developed.Canvas capabilities - I don't want to work with raw canvas and shape tags. This too is a last resort option. Is there any abstraction available?
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Oct 23, 2009
I have a professional license of Flex 3.3. This allows me to create applications using the data visualization components (charts) without watermarks. However, all of release builds (test, production, etc) occur on our build server.
The build server only has the Flex SDK installed (not full Flex Builder). As a result the SWFs compiled with this SDK contain watermarks on all the charts. How can I apply a Flex Builder Professional license to the build server to remove the watermakrs w/o installing Flex Builder?My build environment is Flex SDK 3.3 + CruiseControl.NET + NAnt.
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Apr 2, 2011
I have a flash video(swf) that i'd like to display on my homepage. But, for those without flash i'd like to display a html slider. how would i do this?this is the code for the slider taht i'd like to display if flash isn't available
<div id="tab02" class="slider">
<div>
<ul>
[code].....
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Nov 4, 2011
I just discovered impure.com and was very impressed by what can be achieved in terms of visualizing data using their workspace. Although the platform is free to use, but not open source yet. This causes a few problems because the API section works with .com sites for eg. for ebay, so I cannot visualize ebay listings for regional sites such as ebay.in because the link to ebay.com is hardcoded.I searched around, but didn't find other projects that offer a similar way to work with site APIs and other data sources with the kind of user interface and detail that impure.com does in a realtime way within a browser window.This brings me to the questions:
-What technologies would be involved in creating a similar kind of project
-What are the open source tools that can help develop a fullscreen UI to render the workspace. Are there any alternatives to flash for this, and how do they compare
The goal would be to use standard python data structures, python scripts to do some processing on these data structures, scripts to gather data from csv, json and API sources such as google yahoo, wikipedia and flickr, and scripts to render graphs, tag clouds, network visualizations etc. Then bring them all together into a visual interface that supports drag drop and simple type checking.How would the python backend integrate with the UI.
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Apr 25, 2011
Im not sure whats the best way is to make large amounts of data available to my android app on the local device.
For example records of food ingredients, in the 100's?
I have read and successfully created .db's using this tutorial.[url]...
However to populate the database I use flash? So this kind of defeats the purpose of it. No point in me shifting a massive array of data from flash to a sql database, when I could access the data direct from the as3 array?
So maybe I could create the .db with an external program? but then how would I include that .db in the apk file and then deploy it to users android device.
Or maybe I create a as3 class with an xml object init and use that as a means of data storage?
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Apr 7, 2012
I'm developing an application using Flas Builder / Flex for Adobe Air. This application will be processing a large set of static text (100 - 200 MB) using a variable set of processing instructions.The target platforms will be iOS, Android and Desktop.The data set can be either one large XML file or broken into a bunch of XML files about 3MB each.This will be decided at design time.From your experience would it be better to store the text in an Adode Air database or a set of XML files for best performance (including speed and battery life)?What other considerations should I take into account?
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Aug 20, 2009
how "you" would do it and then deciding my strategy from there.What I'm setting out to do is as follows:I have a UI with about 10 sliders and 10 buttons.I'm using Senoculars Virtual Mouse class to record all of the users interactions into arrays (basically [x,y, action, time, value]) and then after a decided time (say 3 minutes) I play the users interaction back to them.All of that works fine but now the data is not persistent.I would like to be able to store the interaction data somewhere and then a user can log out, log in and view their previously saved interaction.how would you go about saving this data? I was thinking about storing it in a XML file but I'm concerned that the file would wind up being ridiculously huge. If a user drags a slider from left to right just once thats saving [x ,y action, time,value] 42 times.
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Sep 12, 2006
I'm currently using XML to import geo-location data to my flash application.Even though my XML scheme is about as small as can be, I still feel i would do better downloading the variables as text and exploding them. If i manage to change the xml to raw text I can compress the data to about 35% of the original size.I want to load the data in the form a_b_c_d-e_f_g_h.So, to the question; how do I explode a datastring in flash?
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Jan 28, 2009
I'm building a sidescrolling world where you can move around.The idea is that you should be able to move to any point in the world, as well as travelling really fast.I'm pregenerating a long list of data about objects to place, their positions etc.
Now. When moving to a point far away from current position I don't want to loop through the whole list of objects to find what objects should be seen and not, so I'm thinking I should divide the position list into sections, each covering an area equal to the visible area. That way I would only have to roll through the lists closets to the new position.This would however result in an array of thousands of elements each consisting of about 20 objects and I'm figuring that might not be very healthy.One solution would be to split everything up further so that in the end I would have a handable nr of arrays containing a handable nr of elements.
You're probably thinking I should generate positions on the fly, but since one place in the world can be revisited I need to store all positions.
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Mar 20, 2009
I've got a small problem with loadvars. I want to send data from Flash to PHP, which usually works well. But right now I need to send "larger" amounts of data around 10-20kb and loadvars doesn't work anymore.
Using loadvars to open browser-windows seems to work fine, but I want everything to happen inside of flash.
The code is:
Code:
datastring = "1, 2, 3 (...) 4998, 4999, 5000"; // long text
loadstring = 'save.php?data='+datastring;
db = new LoadVars();
[Code].....
Works fine with small text, with big text nothing happens. How to do this the right way?
Edit: Loadvars seems to work up until 4050 characters, 4051 and it doesn't send anymore. But I can't really split the query..
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Sep 8, 2009
I've run into some problems trying to handle large text files in AIR (300+ MB in size). I can open a filestream and read the file just fine and even store it into a string variable. the problem occurs when i try to manipulate this data. Im trying to get each line as an element in an array so i can manipulate this data.Here's what i've tried:1. read the file into a string variable and perform a split looking for the newline character ). this freezes the program2. i've tried reading the file in one byte at a time and putting each line into an array AS it is being read from the filestream. This not only takes long but eventually freezes.
3. i've tried splitting the final string variable which contains the entire text file into chunks to process it separately.4. i've even tried putting the file contents into a sqlite database, but this also freezes.At this point, im not sure what my options are. Is AIR even equipped to manipulate data at this level? I could use a point in the right direction
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Aug 1, 2006
I had to manipulate a large number of XML and GIF files. In this case I will need to use a compressed file, like zip. if the flash can access this type of data like the Java do.
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Nov 2, 2010
I'm currently working on a project where I generate a large amount of audio data to be stored on a users machine.
It works fine for small amounts of data but as the memory usage grows the flash application begins to struggle and eventually dies.
I've been thinking about possible ways to overcome this problem and I was thinking instead of storing all the data in memory (sometimes up to 100mb) a possible solution may be to stream the data to a server (44100 float numbers per second) as it is is being generated then once the accumulation of data has ended sending it back to the client.
1) can you see any problem with this idea and if so could you offer a better alternative?
2) could you reccommend a good server technology to achieve this?
Edit 1
To add more detail.
I am generating audio on the client using the sound.extract method. As the audio is being sent to the speaker I also send it to a byte array.
Once the user has hit a stop button I prepend a wav header to the audio data in the bytearray and allow the user to download a wav of the audio they have just being listening to.
Ideally I didnt want to impose a limit of how much data the user could save. This may not be possible.Storing all this audio data in memory was causing severe performance problems in flash. I don't know of any way to incrementally store this data on the client machines so I was thinking a solution may be to incrementally stream the data to a server somewhere to reduce the memory load.
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May 20, 2011
I have a large flash project and I'm trying to figure out the best way to handle it. I want to load in an XML file of groups and their members, and a bunch of attributes related to each group and its respective members - but these groups and members are only displayed on screen after a user clicks on their parent groups. My first thought was to just pull in the XML for the whole tree of groups and users, then assign movie clips for the groups, and attach properties related to their display and how the user will interact with them - but if they may never appear on screen, is it pointless to do this? How do I best structure this project? Build an object and attach properties only to the object, then add display data only on click?
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Aug 31, 2009
I am writing in reference to Visualizing LARGE Data Sets .
Apparently, using the underlying Flash API for drawing:
g.beginFill( o.x * 0xFFFFFF, 1 )
g.drawCircle( o.x * w, h-(o.y * h), 2 );
[code]......
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Dec 12, 2007
What is the best way to work large amounts of external data in Flash? XML, remoting,something else??I'm looking into a project that has a lot and I'm not sure what the best way to handle it would be
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Feb 8, 2010
Requirement: Create single very large bitmap data which contain some 30 PNG images loaded and for each image it should have some text. Images and text are loaded dynamically (AS2 code. Images are stored in a remote server). The bitmap data display should show 8 images at a time and corresponding text. We can see rest content by scrolling (kinetic scroll is implemented). How can I go for it?Some questions:Is there any limit for size of bitmap data ( As per link there is restriction on the height of the bitmap we can create in AS2 (max value is 2880 which is not enough for some 30 element list If we create individual bitmap data for 30 individual PNG files, we find some jerks in scroll. How can we have smooth scrolling?
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