# Questions tagged [binary]

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### Simplify binary expressions

Is it possible for Mathematica to do simplifications for expressions where the variables are binary, such as: a + b = 1 + 2*c => a + b = 1 Here c must be 0 because if it is 1, the RHS is 3 but the ...
1answer
635 views

### Importing FITS file from HEALPix

I am trying to read FITS file created by HEALPix software. The file contains a spherical map of a scalar field. There is the online support on how to use the file in IDL, but not for Mathematica. I ...
2answers
273 views

### BitShiftRight produces incorrect results in Version 10

Bug introduced in 10.0.0 and fixed in 10.0.2 With Mathematica 10 for Mac, BitShiftRight works properly on lists of up to 100000 numbers, but appears to give ...
3answers
1k views

### Is there a function for nearest power of 2 in Mathematica like nextpow2 in MATLAB?

I am looking for something like nextpow2 in MATLAB like this: P = nextpow2(A) returns the exponents for the smallest powers ...
6answers
2k views

### Graph from binary matrix (not adjacency) respecting the original matrix positions

I have a binary matrix. My objective is to connect every close (without "jump") elements with value equal to 1, but I must keep the point positions, just like it's shown at the image. Can somebody ...
4answers
189 views

### Replacing High Densities of 1.s in Very Large Binary Arrays

I am working with very large binary arrays on the order of {100,100000}. It may look something like this. data = N[Table[RandomInteger[], {i, 100}, {j, 100000}]]; ...
2answers
2k views

### Doing arithmetic with binary numbers

How do I execute binary operations in Mathematica? I want to to multiply say 1010101011 (binary) to 1111101110 (binary) and getting the result 10100111101111111010? Then I want to add the result to ...
1answer
466 views

### How is the mysterious Raw function used?

I have never seen an example use for the mysterious Raw function: Raw[h, "hexstring"] constructs a raw data object with head h, and with contents ...
2answers
850 views

### Read a binary file to an image in memory then analyze it

Is it possible to read a whole file (~100 MBs) into memory, and then use BinaryRead[] function on the data loaded into memory to read/cast it to the types I need with a proper StreamPosition pointer? ...
3answers
233 views

### Conversion of binary matrix of mlf into multilinear function, any ready function for this?

I convert here only one term $x_1x_3x_7$ from the binary matrix by first getting the reversed binary 1010001 and then miggling with the data. I know I could convert the columns into binaries and then ...
2answers
91 views

### Command to change binary mlf terms into Subscripted mlf terms?

I express multilinear functions in the following format. Is there any ready command to convert them to multilinear functions easily? Input ...
2answers
862 views

### No builtin function for bitwise rotation?

There appears to be no builtin Mathematica function for bitwise rotation. Is that true? I suppose I can write my function: ...
1answer
1k views

### Hex Representation in Mathematica and Python

I want to convert a code from Mathematica to Python. I am using the following code to convert a code to hexadecimal, binary and so on: ...
1answer
2k views

### How to read 32-bit *IBM* (not IEEE) floating point values from a binary file?

I am trying to read a binary file. This file records seismic data. Basically its first 3600 bytes are for the general file information, following are for seismic traces, each begins with 240 bytes for ...
4answers
1k views

### Importing or reading data in binary format 212

I have a binary data file in format 212, and I want to import the file into Mathematica. How do I read or import binary format 212? I almost have no direct experience of working with any binary format....
3answers
3k views

### Reading periodic elements from a large file

I have a large binary data file (big endian) with 100+ million "rows" of 11 elements, combination of floats and integers. This is the format: ...
2answers
2k views

### Import Fortran unformatted binary

I have an unformatted binary file generated using the Compaq Visual Fortran compiler (big endian). Here's what the little bit of documentation states about it: The binary file is written in a ...
2answers
629 views

### How does Mathematica decide that Log[2,8] is integer?

At school we learned that $\log_b(x)=\log(x)/\log(b)$, which is implemented in Mathematica as Log[b, x], but the results are different. ...