• Import can read any file as a sequence of signed 8-bit integers.
  • Export writes a list of integers in the range to a binary file.
  • Background

      Uniform sequence of signed 8-bit integers.
      Binary data format.

    Import and Export

    • Import["file","Integer8"] imports an arbitrary file as a sequence of signed 8-bit integers, returning a packed array of integers in the range .
    • Export["file",list,"Integer8"] exports a list of integers in the range to a sequence of binary 8-bit integers.
    • Import["file",{"Integer8",elem}] or Import["file",elem ] imports the specified element from file.
    • Import["file",{"Integer8",{elem1,elem2,}}] imports multiple elements.
    • See the reference pages for full general information on Import and Export.
    • ImportString and ExportString support the Integer8 format.


    • 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 integers in the range
    • By default, Import and Export use the "Data" element.
    • Import["file",{"Integer8",n}] gives the n^(th) byte.
    • Trailing bytes are ignored if the size of the imported file is not a multiple of the data size.


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


    Basic Examples  (1)

    Convert a list of integers to a string representing binary 8-bit signed integers:

    Click for copyable input

    Convert the binary data back to an expression:

    Click for copyable input

    Import the same data, assuming it represents an array of unsigned 8-bit integers:

    Click for copyable input

    See Also

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

    Introduced in 2004
    | Updated in 2007