Questions tagged [binary]
The binary tag has no usage guidance.
104
questions
6
votes
4
answers
184
views
Row function to join together binary number elements
I am trying to join entries of binary numbers at the lowest level of a nested list, e.g.
...
- 65
0
votes
0
answers
61
views
Real to IEEE 754 not working for values -1<x<1
I have written a Module that takes a real number and returns the IEEE 754 floating point binary equivalent. It works fine for values above |1|, but I cannot get it to work for inputs less than |1|.
<...
- 65
2
votes
1
answer
67
views
Changing values in a list
I am currently working the genetic algorithm, specifically in the mutations part, that takes binary numbers and want to convert some of the values in a string into another value.
For example,
...
- 61
2
votes
1
answer
39
views
Need help converting decimals to Binary
I am struggling figuring out how to turn decimals between {0,1} to binary. I am currently trying to use RealDigits[] and FromDigits[] For example using:
...
- 45
4
votes
2
answers
135
views
Numbers to binary and back
I am struggling on how to create a function that converts a number into binary and then back. I know there is a built-in function about this BaseForm[] but I am ...
- 61
0
votes
1
answer
98
views
Algorithm to convert real numbers decimal to binary
Currently trying to write code that converts decimal floats to binary base form (I know BaseForm exists).
Currently I'm working with an example that takes 3.3 and converts it:
...
1
vote
3
answers
91
views
Converting Binary Values to Points [closed]
I searched a lot for this question but couldn't find a similar question.
How can I convert my binary values to points. The output of the code I wrote is below, I wrote my expectation also below.
...
- 113
0
votes
0
answers
33
views
How do I get 3 digits binary after calling BaseForm or IntegerDigits [duplicate]
Let's say I have a list called 'solution', I'm converting these numbers into binary form
...
- 113
2
votes
1
answer
42
views
How to read doubles from specific location of a large file
I have a 1GB file in a proprietary format that is a mix of ASCII characters and doubles (floating point numbers). I need to read in a sequence of twelve doubles. They are in consecutive bytes of the ...
- 6,630
12
votes
3
answers
446
views
Generating a matrix with specific number of 1's in every row and column
I would like to have a function f(n,k) that generates a random nxn matrix with k elements equal to 1 in each row and column and has an all-zero diagonal, with all other elements equal to 0. In other ...
- 123
1
vote
1
answer
48
views
Extracting data from binary file without reading the whole file - is this possible? [duplicate]
Suppose I have a binary data file that holds 1 million lists each composed of five integers. i.e. $\{ x1,x2,x3,x4,x5 \}$
Perhaps I am missing something obvious (quite likely) - but if I know I want to ...
- 485
1
vote
0
answers
66
views
Implementing the Binary GCD algorithm in Mathematica
Well, I have $n\in\mathbb{N}$ and I want to transform $n$ to a binary number which can be done using FromDigits[IntegerDigits[n, 2]]. I want to compute the ...
- 1,723
0
votes
0
answers
32
views
Making a binary number $n$ that must contain $k$ times a $1$ such that `k==GCD[n,IntegerReverse[n]]`
Well, I am trying to code the following thing in Mathematica: I have a binary number $n$ that must contain $k$ times a $1$. So for example: when $k=5$ the following binary numbers does fit the rule:
$$...
- 1,723
4
votes
1
answer
230
views
Using Mathematica to derive analytic form of single variable function
I am interested in finding an analytical form of the following function $f(n)$ defined as:
$$f(n):=\sum_{\{\bar{K}\}}\prod_{l<j}^{n}e^{ik_lk_j},$$ where $\{\bar{K}\}$ is the full set of binary ...
- 271
2
votes
1
answer
113
views
How to separate these circle based on their pixels mean intensity?
I have this image I want to separate green circles from yellow circle in two different images whiteout changing the pixel intensity information. I used the mean intensity
...
- 23
4
votes
1
answer
104
views
Binary permutation list code in Mathematica
Given some natural number $N$, I am interested in the set of all binary permutations of length $N$ (with the intention of storing in lists depending on how many $1$'s appear in each permutation). My ...
- 271
0
votes
1
answer
115
views
Minimizing a function over a bounded domain with binary variables
I want to minimize the following function:
$$
f(m,n)= \sum_{i=1}^N\Big\{ \alpha_i(x_i-m)^T(x_i-m) \Big\} + \sum_{i=1}^N\Big\{\beta_i (x_i-n)^T(x_i-n) \Big\}
$$
where $m,n$ are all 2-d vectors:
$$
m:= ...
- 409
11
votes
1
answer
320
views
What is the relationship between the Wolfram executables? Where is this documented?
The relatively new wolframscript now accompanies the traditional math and wolfram binaries. ...
- 12.3k
5
votes
1
answer
149
views
Read binary files and separate the 64-bit unsigned integers into certain forms？
I have a binary file where each data is a 64-bit unsigned integer (little endian). For simplicity, let's say the data in testdata.bin file opened in HxD is:
namely:...
- 1,556
2
votes
1
answer
171
views
How do I get the data from this binary file? [duplicate]
I have a file which contains the following binary data:
...
- 8,105
6
votes
1
answer
176
views
Convert ByteArray to integer and real values
during the import of a complex file format I handle ByteArray or lists of byte values. While I can easy transform them from one type to each other:
...
- 609
4
votes
2
answers
138
views
How to generate the 8^th order symmetric binary matrices whose sum of absolute eigenvalues is 8?
It is needed to generate all 8th order(8 by 8) symmetric binary matrices(of 0's and 1's) such that the sum of the absolute eigenvalues is 8. Listing all the 8th order symmetric binary matrices and ...
- 117
0
votes
0
answers
29
views
FindClusters Hamming Distance giving error
I am trying to run FindClusters[hex, DistanceFunction -> HammingDistance[IntegerDigits[#, 2, 8], IntegerDigits[0, 2, 8]] &] over a list of data but I keep ...
- 465
0
votes
1
answer
53
views
Import and create a hexdump view of file
How would I go about creating a hexdump type of view of an imported binary file?
for example, (format is
...
- 465
1
vote
0
answers
45
views
Reading product of same ByteArrays
I am handling a huge set of data and I am trying to optimize my code. I have very large expressions to expand and simplify and I've seen that converting the expressions to ByteArrays improves a lot ...
- 1,578
4
votes
4
answers
252
views
Generating all symmetric binary matrices of order up to 7?
I want to create all symmetric binary matrix with order up to 7. Can anybody help in creating this?
I want to obtain the subset of all symmetric matrices, with all diagonal entries being zero.
- 117
2
votes
3
answers
185
views
Simplifying expressions containing binary variables
Consider an expression with two binary variables, $a,b\in\left\{ 0,1\right\} $, given by $F=(1-a-b)^{3}(1-b)$, with truth table:
...
- 23
0
votes
2
answers
60
views
FindMaximum under binary constrains
I'm trying to find a maximum for a function whose variables have binary values (either -1 or 1). The clumsy code for that constraint I use is shown below. There must be a more compact code, and I ...
- 1
0
votes
0
answers
40
views
Table Glitch / Error with binary data
I have a large group of binary files that I am loading with
binaryList = Table[ BinaryReadList[ paths[[i]], "Byte"], {i, Length@paths}];
specifically ...
- 180
1
vote
1
answer
201
views
Import OVF 2.0 Vector field files
I'm using a simulation software (mumax3) which outputs OVF_2.0 files. It can either export binary or text files. The binary files are usually much smaller than the text files. I would like to use the ...
- 370
11
votes
7
answers
2k
views
Find if there are consecutive 1s in a binary representation of a number
Given a list of numbers in decimal form, what is the most efficient way to determine if there are any consecutive 1s in the binary forms of those numbers? My solution so far:
...
- 811
1
vote
1
answer
107
views
Construct a binary tree where nodes are labeled according to given rule
I want to plot a binary tree in Mathematica where the nodes are labeled according to a given rule. In fact, whether a node has a left child or a right child or both, will be determined by a rule. And ...
- 11
1
vote
1
answer
89
views
How to understand and use bit operation for programming
I got the following code using bit operation from here:
...
6
votes
0
answers
115
views
Importing a 12 bit array
I have a binary file of 12 bits integers obtained from a camera software. It can produce FITS files from these but the processing time on the large data set I have is excessive. What I have is the ...
- 147
1
vote
0
answers
83
views
How to recover plaintext from .MX files?
I need a function to deserialize the contents of an MX source file for reading. We can’t simply use Get because I don’t want to load or run the code, but rather to ...
- 3,720
12
votes
0
answers
463
views
Why does Mathematica consume so much memory when reading binary data?
There are somewhat similar questions on here, but I didn't find a satisfying answer for this case: I import a 1.7 GB binary data file using the following command:
...
- 613
1
vote
1
answer
157
views
Why ImportByteArray when generate image from bytes
I was trying to generate an image from a list of bytes so I only had to Import an Image once as I want to store a Base64Encoded ...
- 1,269
5
votes
0
answers
66
views
Does NumericArray always maintain data unmodified?
Suppose that we create a NumericArray using a LibraryLink function, then pass this to another one. Is NumericArray guaranteed to maintain the binary data as it was ...
- 224k
3
votes
1
answer
331
views
Read NumericArray from a file
Suppose I have a binary file which consists of a list of integer or real numbers. Let's say signed 8-bit integers; so each byte of the file is a single such integer. How can I read it and turn it into ...
- 283
4
votes
1
answer
112
views
Something is wrong with the implementation of the ThueMorse function
While trying to answer this Math.SE question, I believe I found several bugs in Mathematica and Alpha relating to the Thue-Morse sequence.
As a quick reminder, the $n^{\rm th}$ element of the Thue-...
- 763
7
votes
4
answers
816
views
BitNot does not flip bits in the way I expected
Can anyone explain why the last result in these statements is not the bit-flipped version of arr?
...
- 123
3
votes
0
answers
266
views
How to import a binary data generated by Fortran? [closed]
I have a unformatted binary data file generated by gfortran. However, when the binary data is imported by Mathematica, a correct result is not obtained.
This is my fortran code:
...
- 43
2
votes
2
answers
127
views
Listing all monotone increasing binary digits
For $n=5$, I have $32$ binary digits and for this there are $2^{32}$ combinations. Out of this many, the interesting ones (i.e., the ones that have monotone increasing binary digits) are only about "$...
- 2,355
1
vote
2
answers
238
views
Number of contiguous ones of an element in a 2d binary array
I have a 2d binary array of 0s and 1s. I select an element and would like to know how many 1s are in the contiguous cluster that includes the selected point. If the selected element is 0, the answer ...
0
votes
1
answer
551
views
Using the binary search algorithm in a sorted grid
I want to get a mathematica code for binary search algorithm applied to a sorted grid containing integers.
For example, given
f[k_,x_]= x^2 + k x + k - 2
where <...
- 1
4
votes
1
answer
1k
views
How to read this dataset with .dat and .r64 files?
I stumbled upon the European Data Incubator project, and wanted to play around with some of their data. I'm trying to open this dataset, which contains a bunch of ...
- 43
2
votes
0
answers
378
views
Converting hex string to ByteArray
With blockchain support, it should finally become straightforward to convert string hashes to ByteArray, but I still can't figure out the canonical Wolfram way of ...
- 7,085
2
votes
1
answer
196
views
Generate a prime number in a range with fixed $n$ most significant bits
I'm new to Mathematica so my question might be trivial.
How do I generate a $200-bit$ prime with the condition that the 10 most significant bits in its binary representation are equal to some binary ...
- 25
4
votes
4
answers
786
views
How to total the amount of zeros in a binary matrix
I have a 150 by 300 binary matrix. I would like to find the total amount of zeros in the matrix. I've been consulting online documentation for support, but am unable to use the "count" function ...
- 281
1
vote
0
answers
70
views
Efficiently transform sequentially generated integer matrices into boolean matrices
Assume you have a list of 5 numbers, eg L = {14, 7, 11, 14, 0};.
Now, what you want to do with this list, is to transform each entry into eg a binary list, using <...
- 3,980