binary-data

A urllib2 request receives binary response as below: 00 00 00 01 00 04 41 4D 54 44 00 00 00 00 02 41 97 33 33 41 99 5C 29 41 90 3D 71 41 91 D7 0A 47 0F C6 14 00 00 01 16 6A E0 68 80 41 93 B4 05 41 97 1E B8 41 90 7A E1 41 96 8F 57 46 E6 2E 80 00 00 01 16 7A 53 7C 80 FF FF Its structure is: DATA, TYPE, DESCRIPTION 00 00 00 01, 4 bytes, Symbol Count =1 00 04, 2 bytes, Symbol Length = 4 41 4D 54 44, 6 bytes, Symbol = AMTD 00, 1 byte, Error code = 0 (OK) 00 00 00 02, 4 bytes, Bar Count = 2 FIRST BAR 41 97 33 33, 4 bytes, Close = 18.90 41 99 5C 29, 4 bytes, High = 19.17 41 90 3D 71, 4 bytes, Low =

I want to read the binary data of an image and then save it again to my local disk with JavaScript. I wrote a small demo that shows this use-case. To read the file I use readAsBinaryString from the File Reader API (HTML5) to get the binary data. I write the binary string into a textfield from which I then read the data again to write it to a file. If I save the file my images (I tested several JPEGs) are broken so you cannot see anything useful. Can it be that "readAsBinaryString" makes a conversion which makes the binary data incorrect? To have a look at my demo application I made a fiddle .

Consider the set, S , of all binary vectors of length n where each contains exactly m ones; so there are n-m zeros in each vector. My goal is to construct a number, k , of vectors from S such that these vectors are as different as possible from each other. As a simple example, take n =4, m =2 and k =2, then a possible solution is: [1,1,0,0] and [0,0,1,1]. It seems that this is an open problem in the coding theory literature (?). Is there any way (i.e. algorithm) to find a suboptimal yet good solution ? Is Hamming distance the right performance measure to use in this case ? Some thoughts: In

I have to find a design decision for the following task: I have a SQL Server database and it contains a table of orders. PDF documents will be uploaded by users through a simple file upload from a web page and assigned to an order. There is not more than one document per order (perhaps no document, never more than one). For this purpose a user opens a web page, enters an order number, gets the order displayed and clicks on an upload button. So I know to which order the uploaded document belongs to. Now I am considering two options to store the documents on the web server: 1) Extend my table of

If I have a class declared as: public class MyPersistentClass { public int ID { get; set; } public Stream MyData {get;set; } } How can I use NHibernate's mappings to persist the MyData property to and from the database? Sebastian Markbåge You could use a Stream using a custom type and map it according to your storage needs. But there are some issues with using the Stream object as I mention in my blog series about lazy streaming of BLOBs and CLOBs with NHibernate . What you really need is a Blob object that in turn can create a Stream to read data from. Since Stream contains information about

So, I created a binary file with fortran, using something similar to this: open (3,file=filename,form="unformatted",access="sequential") write(3) matrix(i,:) The way I understand it, fortran pads the file with 4 bytes on either end of the file, and the rest is just the data that I want (in this case, a list of 1000 doubles). I want to read this in with gnuplot, however, I don't know how to get gnuplot to skip the first and last 4 bytes, and read the rest in as doubles. The documentation isn't very helpful in this regard. Thanks Testing with gnuplot 5.0, the following fortran unformatted data