Newest 'binary' Questions

4

votes

2answers

112 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 ...

asked Apr 4 at 5:06

SPJ

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votes

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23 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 ...

cluster-analysis binary distance

asked Dec 18 '20 at 17:10

skyfire

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votes

1answer

42 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 ...

import files-and-directories binary

asked Dec 9 '20 at 18:30

skyfire

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vote

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42 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 ...

performance-tuning simplifying-expressions expression-manipulation binary

asked Nov 26 '20 at 21:57

apt45

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4

votes

4answers

216 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.

matrix combinatorics binary

asked Sep 26 '20 at 5:43

SPJ

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2

votes

3answers

142 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: ...

simplifying-expressions expression-manipulation boolean-computation binary

asked Sep 21 '20 at 2:39

almagy

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votes

2answers

45 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 ...

mathematical-optimization constraint binary

asked Sep 20 '20 at 22:23

Fvwm

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0

votes

0answers

39 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 ...

table binary

asked Aug 24 '20 at 15:54

atlasgeo

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vote

1answer

82 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 ...

import vector binary

asked Aug 4 '20 at 17:23

Walter Lars Lee

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11

votes

7answers

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: ...

list-manipulation performance-tuning binary

asked Jun 1 '20 at 21:28

KHAAAAAAAAN

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vote

1answer

78 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 ...

graphics graphs-and-networks trees binary

asked May 8 '20 at 2:51

Mwen Rele

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vote

1answer

79 views

How to understand and use bit operation for programming

I got the following code using bit operation from here: ...

binary

asked Mar 15 '20 at 0:59

A little mouse on the pampas

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6

votes

0answers

92 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 ...

import binary

asked Mar 4 '20 at 1:30

A postdoc

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vote

0answers

58 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 ...

import files-and-directories binary format dumpsave

asked Dec 13 '19 at 17:14

user5601

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12

votes

0answers

452 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: ...

import memory binary

asked Nov 13 '19 at 15:05

banone

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vote

1answer

126 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 ...

image-processing image binary number-bases

asked Aug 15 '19 at 13:43

Ray Troy

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5

votes

0answers

54 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 ...

binary numeric-array

asked Jun 4 '19 at 13:58

Szabolcs

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3

votes

1answer

235 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 ...

import binary numeric-array

asked Jun 4 '19 at 7:53

Paul Zinn-Justin

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4

votes

1answer

108 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-...

integer-sequence binary

asked May 18 '19 at 7:38

Klangen

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7

votes

4answers

757 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? ...

binary

asked Mar 12 '19 at 21:30

bc888

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3

votes

0answers

230 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: ...

import binary fortran

asked Mar 4 '19 at 17:58

finalboss

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2

votes

2answers

106 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 "$...

list-manipulation binary digits

asked Sep 22 '18 at 22:11

Seyhmus Güngören

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1

vote

2answers

113 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 ...

cluster-analysis binary

asked Jun 18 '18 at 1:19

John Bechhoefer

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votes

1answer

469 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 <...

algorithm searching binary

asked Jun 6 '18 at 9:24

Ik John

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4

votes

1answer

814 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 ...

import files-and-directories binary format

asked Apr 25 '18 at 11:16

Panda Coder

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2

votes

0answers

316 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 ...

binary version-11.3

asked Mar 5 '18 at 18:10

swish

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2

votes

1answer

159 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 ...

prime-numbers binary

asked Jan 24 '18 at 17:38

Shadowfirex

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4

votes

4answers

731 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 ...

list-manipulation matrix binary counting

asked Jan 2 '18 at 3:05

Astroturf

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vote

0answers

61 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 <...

list-manipulation function-construction binary

asked Nov 3 '17 at 7:55

user42582

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6

votes

1answer

225 views

Is it possible to convert the output of the Encrypt[] function into binary digits?

I use the following code to generate a key and then use it to encrypt a simple string message. The output of the function Encrypt is an encrypted object. But I would rather convert this into binary ...

binary cryptography

asked Oct 21 '17 at 10:32

user3318424

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2

votes

1answer

267 views

The binary of negative integer number

I have a question about the binary of negative integer number in Mathematica. In most implementations, negative signed integers are stored in what is called two's complement. The other major way of ...

number-representation binary number-bases

asked Oct 2 '17 at 23:20

zchenkui

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2

votes

1answer

104 views

Convert Negative Integers into Signed Binary?

I'm relatively new to Mathematica and have been struggling with this problem for several days. I have a string of integer data, ranging from -2044 to 2044. So this looks something like {-2044,-2040,-...

list-manipulation string-manipulation binary

asked Sep 15 '17 at 13:47

Karl Haebler

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3

votes

1answer

217 views

Convert characters to binary?

I can get a binary representation of characters as follows: BaseForm[ToCharacterCode["A"], 2] However, that produces a weird binary code object that might be ...

string-manipulation character-encoding binary

asked Jul 15 '17 at 16:33

Kagaratsch

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9

votes

8answers

590 views

How to find the sum for each individual row in a binary matrix until the first zero is reached from left to right.

I have a 150 by 300 binary matrix. I would like to sum the 1's for each individual row (from left to right) until the first zero is encountered. For example, if a given row is 1 1 1 1 1 1 0 0 0 1 0 0 ...

list-manipulation matrix summation binary

asked Jul 13 '17 at 22:20

Astroturf

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10

votes

5answers

894 views

Substitute some 1s with 0s in random list

How is it better to substitute list of random combination of 1 and 0 (binary image) so that only first (or central) instance of 1 left in each group. ...

list-manipulation image-processing binary

asked Jun 11 '17 at 19:52

iot

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5

votes

2answers

363 views

Printing binary numbers with extra zeros

I have the numbers $0-64$ in binary and want them all to be displayed with 8 figures. Expected output: $5_{10} = 101_2$ should become 00000101.

display binary

asked May 25 '17 at 15:24

GambitSquared

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1

vote

0answers

47 views

Binary Image Size after import

I have a lot of binary images I would like to import into mathematica. Each of them is 132kB (1024x1024) big. Like the following: As soon as I import it into Mathematica however and call ByteCount[...

image-processing import binary

asked May 18 '17 at 20:34

MaxJ

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vote

0answers

61 views

Export 1bit Image

I have a binary image like the following one: How can I export it as an 1bit image instead of an 8bit one? If I export it in tiff it automatically becomes an 8bit one. Best, Max

export image binary

asked May 18 '17 at 12:58

MaxJ

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0

votes

5answers

116 views

How to find all binary numbers with the kth =0 and smaller than 2^n?

I have been stuck in this problem for a long time. I need to find a general code to collect all binary numbers which are at most n digits (<2^(n-1)) with the ...

programming binary

asked May 16 '17 at 5:45

Jieyu You

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5

votes

1answer

297 views

Decoding GZIP encoded Body, BodyBytes (ByteArray) and BodyBytesArray from URLRead

When calling the Stack Exchange API v2.2 using the new (Mma11) function URLRead we get a GZIP encoded Body in alternative formats: ...

conversion web-access character-encoding binary compression

asked May 11 '17 at 11:24

rhermans

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12

votes

1answer

225 views

Performance-driven approach to using Big Data without killing the hard-drive

Situation A calculation has to be done in which the amount of data is too much to fit into memory. Fortunately, only a part of the overall data set has to be known at a time. The preprocessing is ...

data data-acquisition input binary

asked Mar 15 '17 at 13:37

pbx

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vote

1answer

298 views

Generate a list of randomly distributed $1$s and $0$s with fixed proportion of $1$s [duplicate]

I need to simulate a random initial state of an 1D cellular automaton, but with different 'densities' of filled cells. Let's say the size of the list is $N$, then I need to be able to fix a number $P$...

list-manipulation random binary

asked Jan 11 '17 at 11:15

Yuriy S

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8

votes

3answers

430 views

Reading a file as a ByteArray?

I want to read in large files as byte strings. Import[..., "Byte"] yields a list of Integers that takes up much more space (16 times more) than the file. ...

import string-manipulation memory binary

asked Nov 5 '16 at 13:45

masterxilo

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vote

0answers

157 views

How can I import Real16 binary data? BinaryReadList doesn't work [closed]

How can I import Real16 binary data? BinaryReadList doesn't work: ...

binary

asked Jul 12 '16 at 15:15

Vasily

312 bronze badges

-1

votes

1answer

106 views

Turn binary number into string of words [closed]

I don't actually have any code for this, as I have no real idea how to do it. I have a large binary number combination that I know turns into some sort of string. How would I go about translating it?

string-manipulation binary

asked Jun 3 '16 at 16:10

Karl

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vote

1answer

429 views

How to visualize .data files? [closed]

I am working with simulation models trying to carrying out some predictions in ocean waves and this stuff. (MITgcm) I am able to run the program and generate hundreds of .data and .meta files, but i ...

data python binary

asked Feb 10 '16 at 20:09

Alejandro Jiménez Rico

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vote

2answers

88 views

How to replace the selected value in matrix with a specific digit?

I want to replace the selected values through "RandomChoice" by 1 and all other values in matrix with 0. I want output in binary form matirx. ...

matrix algorithm binary

asked Jan 3 '16 at 19:18

Mamoona

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6

votes

1answer

717 views

How do I directly read the Nth byte from a binary file?

I have a very large binary file (several hundred GB) which I would like to process using Mathematica. I only need to process a few bytes of this file at a time, and I know in advance which bytes I ...

files-and-directories binary

asked Dec 16 '15 at 22:37

David Zhang

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7

votes

2answers

403 views

Infinite base two number to base ten

Suppose I have a base two number that repeats itself every five places (a number $x$ such that $0\le x<1$. For example: $$x=0.101011010110101101011010110101101011010110101...$$ What would be a ...

binary number-bases

asked Dec 7 '15 at 3:16

David

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3

votes

1answer

201 views

Binary decision diagrams (BDD) syntax error

I am new here (and to Mathematica) and would like to rebuild a simple binary decision diagram that I found here https://en.wikipedia.org/wiki/Binary_decision_diagram A code has been provided as part ...

syntax warning-messages binary

asked Dec 3 '15 at 11:43

matts4

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