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I have 1K tag. I have data of 1433 byte to be stored in the tag. Can any body help me for some compression technique to compress the number of bytes for the same information.
Thank You
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It depends on your data. What is your data? More importantly, what is the entropy of your data?
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harold aptroot wrote: entropy
Big word alert!
Panic, Chaos, Destruction.
My work here is done.
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Fortunately I know what it is, does that mean I'm allowed to use it?
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harold aptroot wrote: I know what it is, does that mean I'm allowed to use it?
If you can use entropy, please do so, the world would be much better of with an entropy reduction.
Luc Pattyn [Forum Guidelines] [My Articles]
I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages
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A hardware engineer I used to work with suggested a data compression technique that "removed all the zero bits, as they don't mean anything anyway". I wish it would have worked...
No trees were harmed in the sending of this message; however, a significant number of electrons were slightly inconvenienced.
This message is made of fully recyclable Zeros and Ones
"Rumour has it that if you play Microsoft CDs backwards you will hear Satanic messages.Worse still, is that if you play them forwards they will install Windows"
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Good one
He (she?) should have a chat with jules Gilbert (you know, the persistent "magic compression" guy who refuses to ever let his technique be put to the test) on comp.compression 
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Ok, that's a very ineffective way (Deflate is not bad, but the implementation doesn't compress that much at all)
If you want better results, you can look at SharpZipLib[^]
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It is filling my requirements. Happy to have this link. You guys are very good providing the help for free. Please inform me if I can do something for you.
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J imran wrote: Please inform me if I can do something for you.
Help people who asks questions.
Panic, Chaos, Destruction.
My work here is done.
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![Rose | [Rose]](https://codeproject.freetls.fastly.net/script/Forums/Images/rose.gif)
thank you.
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my data is actually a form. I am storing the form data on the Tag. My plan is to make the array of bytes then I will move to store the bytes on the rftags. Have you any idea of value initialize, increment or decrement.
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J imran wrote: my data is actually a form
It doesn't really matter what it represents, it matters how it represents it.
J imran wrote: Have you any idea of value initialize, increment or decrement.
I'm not sure what you mean.
In any case, could you show the data that you're planning to store? You can change it a bit if it's confidential, but make sure you don't substantially change the statistical properties of the data.
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ok , I am working for it. I want to find if there is some way to store a character in less than a byte.
Thank You.
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You could try:
- not storing it (could be possible, depends on circumstances)
- using only 7bits per char (lean ASCII)
- using Huffman codes (predefined Huffman tree I would say, if possible)
- range coding (hard and not much better than Huffman codes)
- other, if you tell me more about the strings that you want to store I can think of more possibilities
edit: - put all strings that could be used for that variable in an array and store only the index (works very good if you have few possibilities) (trivial really, just mentioning it for completeness)
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It also depends on your system design. If you're storing information that doesn't change and doesn't leave the premises, then you can easily store this information in a database and just store an ID number in the tab that can be used to look this information up in the database.
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Dear all,
I have a interview question here--
Q ) We do not have static concept in dot net 1.1,so to achieve static in 1.1 , what was the solution?
Thanks in advance,
Srinivas Mateti
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Thanks..a class with private constructor and one of parameter will creates the object of that class which is read only right.....
So..is the question is rigt..."Dot net 1.1 does nt have static concept?
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It allows static instances, but not static classes. This basically means that the static keyword wasn't applied to classes until .NET 2; it was available as a method modifier in .NET 1/1.1 which is how the static effect was achieved.
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
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Initial version of C# (.NET 1.1) did not support the concept of static classes though you could have static members in a class. C# 2.0 (.NET 2.0) introduced the concept of static classes. It is not a feature of the framework, it's just a syntactic sugar in the language which ensures that a class contains only static members, if that is what it is supposed to contain.
Static classes cannot have non-static members (they can have const's), they cannot inherit from another class (implicitly inherits from System.Object) and they themselves cannot be inherited.
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Static does not mean "read only". You can get a more comprehensive explanation from here[^].
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The question is wrong, as static is a modifier available in .Net since it's first version.
Look at the Main method:
static void Main(string[] args)
{
}
It's static.
But, as the others pointed, the keyword couldn't be used in the class declaration.
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