ActionScript 3.0 :: Input About Large Data Handling?
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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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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Feb 18, 2010
I am trying to convert a string having numbers to an integer.
//15 9's are there
var str:String="999999999999999"
var res:Number = new Number(str);
But it is not able to convert correctly as the the var res now has the value 100000000000000000. I know that the number has 52 bits of memory, then why is it not able to do the conversion?
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Jun 24, 2011
I am writing a class that will handle text input using a keyboard event attached to the stage (or it could be attached to a movieclip or something else). It will have many applications, but to give you a picture of something it might do, it could be used to input "cheat codes" where you type something and it updates a string variable. Then when the string matches some code it calls some function (and in this instance it may be annoying or impossible to use a textfield for this).It is pretty easy to take all the keycodes and convert them into text (or program whatever function they serve, like backspace), but it is also relatively time consuming. Is there an easier way, or does anyone know of someone elses class out there that does something similar?
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Apr 24, 2011
The problem I'm having with my simple flash program is, the array doesn't seem to care what I put in my text field it just generate one item. The idea is that you will get the number of oranges on the screen that you put in the text field. Once you click them all you will goto the win frame.
[Code]...
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Jan 24, 2011
How can I cause numbers with no value to show up blank instead of NaN on forms?Let's say I have a User class with an optional weight (kgs) value, of type Number. If I edit a User in Flex I get the user object from the server and bind weightInput.text to user.weight. If weight is null on the server it will be translated to NaN in Flex, and then the value of weight in the edit form showes up as NaN. That is really inconvenient, as I would like it to just be blank if it has no value.
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Jul 28, 2010
In flex, I am handling event like this,
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May 29, 2009
I've written an application that deals with multiple languages, English, French, etc, I'm using Zendamf to retrieve multi-language data from a database, however, I'm running into a problem using Zendamf, and it could kill this project fast:
There seems to be an issue passing special character values via Zendamf. While querying a database that returns data including French-text characters (ie: Québec), the result returned from Zendamf is not handling the special characters (ie: instead of Québec, we receive Qu�c).
I've checked the output of the data via Php: the issue is not with the database result - the characters are returned correctly from the database to the Php result-set - I am able to print these characters correctly before they are sent through Zendamf, either by rendering them in HTML or by writing them to a log file.
However, once I plug the SQL result into an object and pass it to Zendamf, the special characters get mangled. Using Charles Web Debugging Proxy, I can see that the result values are mangled before they are passed back to my AS3 application.
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Sep 23, 2010
I'm loading external data from a txt file into a MovieClip. It contains data that is crucial to the presentation viewing. It is necessary to load, not right away but at some point (the sooner the better). When the txt is on the same server it works instantly, but I'm loading data from another server.
Two problems: the onLoad code is stuck if the file doesn't load (connection problem, server down?) and in offline mode what happens if the data is purged out of browsers cache (history problem)?
How can i handle these exceptions?
1. Some code that uses a "timer" to periodically try to load the data again if the connection is slow and the txt doesn't loads the first time?
2. When it doesn't load at all, and the onLoad fails, how can I simulate notOnLoad - exception for data download fail? And retry the dataLoad?
I've already made cross-server data loading possible using crossdomain.xml policy.
The site is still in development. This problem occurred when the server which contains the data.txt was down due to maintenance, and when one of the test-visitors was downloading so much in the background that his connection didn't had enough bandwidth to load data correctly (browser thought he had connection problems).
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Feb 15, 2011
I need to make a function that creates an object based on each set of data in an XML file. I am currently using bracket notation to do it, but don't know how to increment the next object's name dynamically. I wanted to do something like this:
[Code]...
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Apr 24, 2007
I have just established a menu based-image in flash in the main html page. Also I do have a second page has details on each option of the menu of the main page. I am trying to whenever I click on any option of the menu in the main page; this should take me to the specific section in the second page describing this option.
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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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Jun 3, 2011
For a client, I am working on a project where a live RTMP stream is published to an Adobe FMS 3.5.6 server from a java application, using Red5 0.9.1 RTMPClient code. This works fine, until the timestamp becomes higher than 0xFFFFFF after 4.6 hours, and the RTMP extended timestamp field starts being used. I have already found: when the extended timestamp was written after the header, the last 4 bytes of the data were being cut off. I have fixed this locally, and now the data being sent seems to me to be conformant to the spec. However, FMS still throws an error message in the core log and then kills the connection from the Red5 client. Here is the error message:
[Code]..
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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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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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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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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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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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Aug 31, 2011
I have a site with an SWF that I can put some metrics into, such as ZIP Code, Weight, etc.. then, it takes that info and gives me shipping rates.
I need to build a front-end site that I can have a forms page that will push data to the backend SWF, and then return the data back from the SWF to the front end.
Front-end -> SWF (Zip Code, Weight, Size) -> *Calculates* -> Front-End
That should be the flow.. So I need to send data to the backend, GET the data that it calculated, and return the results to my front-end.
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Oct 5, 2006
Compare input text with imported XML data problem
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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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Jun 29, 2009
I have a web application that functions as a dashboard, allowing a user to see summaries of historical data to view trends, etc. As an extension to this, I want to allow the user to drill-down into the historical data if they so wish.What this will amount to is a table of time-value pairs, showing the time a particular data point was recorded as well as its associated value. The issue is that there could be a very large amount of data on record (millions of points is entirely possible), which means it wouldn't work to load all the data up front and display it to the user.
So far, my best idea is to implement the table of time-value pairs with "infinite scrolling" - i.e. the first x points are loaded and then as the user scrolls down the next x points are fetched and so on until the user reaches the end of the data (with a fixed-size cache of points, so that I don't run out of memory). The issue with this approach, though, is that there's no way to get to the end of the data without first fetching every point in between.
Another option would be to have a navigation interface with forward and back buttons, as well as some sort of date chooser so the user can quickly navigate to any data point they wish. This solves the problem of the first idea, but this navigation interface is far more clunky and less intuitive.My question is: is there some happy medium? A UI where it's clean and easy to navigate through the data but at the same time provide some method of jumping to a specific point in time?
Edits based on comments below:The development environment is flex and the database is SQL Anywhere, though the back-end logistics are less important to me than a clean, functional UI.
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Jan 13, 2012
I have a large ArrayCollection that need to be displayed in series of Datagrid.After testing, the loading time is around 30secs-1minute.My question here, is there a way to gradually add each datagrid and display it instead of waiting until all datagrids to fully created?Existing :
AddChild 1
AddChild 2
AddChild 3
[code].....
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Feb 18, 2010
how much memory (and swf size) the various built-in data types take up in actionscript 3? I'm specifically interested in int, Number, and (dense) Arrays or Vectors. I'm working on a project where I need to embed large amounts of structured array data, which is already in C++ format, so porting is just a matter of copy-paste, search-replace. I've already had a look at Adobe's lowdown on datatypes but it's not specific enough, and doesn't mention Arrays, etc.
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Feb 3, 2011
I'm developing a web application with Flash CS5 and AS3.0. The problem I'm having is this:At a certain state, the application goes to a frame with a "loading..." animation that loops continuously until the next state is reached. The animation is inside a MovieClip that lives on this frame on the stage (I'm not creating or animating it dynamically). While in this state, the app is waiting to receive a large xml file from an XmlSocket connection. The file takes a few seconds (literally - not milliseconds) to be received fully by the Flash player, and during this time the loading animation stops. I believe the socket is blocking the animation thread until it's done receiving the entire file.Does anyone know of a workaround that would allow the animation to keep playing while the socket is receiving? I've seen pseudo-threading hacks, but those always deal with computations or other activities that can be accomplished by calling a call-back function multiple times. Since I'm just listening on an open socket, there's no callback I could pass to a pseudo-thread.
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