Bit

  • Import can read any file as a sequence of single bits.
  • Export writes a list of 0s and 1s to a binary file.
  • Background

      Uniform sequence of bits.
      Binary data format.

    Import and Export

    • Import["file","Bit"] imports an arbitrary file as a sequence of bits, returning a packed array of 0s and 1s.
    • Export["file",list,"Bit"] exports a list of 0s and 1s to a binary sequence of bits.
    • Import["file",{"Bit",elem}] or Import["file",elem ] imports the specified element from file.
    • Import["file",{"Bit",{elem1,elem2,}}] imports multiple elements.
    • See the reference pages for full general information on Import and Export.
    • ImportString and ExportString support the Bit format.

    Elements

    • General Import elements:
    • "Elements" elements and options available in this file
      "Rules"full rules for each element and option
      "Options"rules for options, properties, and settings
    • Data representation element:
    • "Data"list of single bits (0 or 1)
    • By default, Import and Export use the "Data" element.
    • Import["file",{"Bit",n}] gives the n^(th) bit from file.
    • Export["file",list,"Bit"] pads list with zeros at the end if the number of bits to be exported is not a multiple of 8.

    Options

    • Import option:
    • "HeaderBytes"0how many bytes to skip at the beginning of the file

    Examples

    Basic Examples  (1)

    Convert a text string to a list of bits:

    In[1]:=
    Click for copyable input
    Out[1]=

    Convert a list of 0s and 1s:

    In[2]:=
    Click for copyable input
    Out[2]=

    Export automatically pads with 0s if necessary:

    In[3]:=
    Click for copyable input
    Out[3]=

    See Also

    "Binary"  "Byte"  "Character8"  "Character16"  "Integer8"  "Integer16"  "Integer24"  "Integer32"  "Integer64"  "Integer128"  "UnsignedInteger8"  "UnsignedInteger16"  "UnsignedInteger32"  "UnsignedInteger64"  "UnsignedInteger128"  "Real32"  "Real64"  "Real128"  "Complex64"  "Complex128"  "Complex256"  "String"

    Introduced in 2004
    (5.1)
    | Updated in 2007
    (6.0)