chunkarray(
DATA
,
INDEX
,
CHUNKLENGTH
)
The chunkarray( function extracts a binary “chunk” from binary data (see Binary Data).
Parameters
This function has three parameters:
data – binary data containing one or more byte (8-bit) values. See Binary Data for more information on this type of data.
index – position of the desired byte, starting from 1.
chunklength – the length of each “chunk”, in bytes.
Description
This function extracts a binary chunk from an array of chunks. This is not a Panorama style delimited array but a C style array of binary chunks. The result is a binary value (See Binary Data), which in this example Panorama has automatically converted to text (see the binarytotext( function).
chunkarray(byte(65)+byte(82)+byte(96)+byte(78)+byte(99)+byte(87),2,3) ☞ NcW
Note: This function will actually work with either binary data or text. If the data parameter is text, the result will also be text.
chunkarray("abcdefghiljklmnopqrstuvwxyz",2,4) ☞ efgh
Note: This function is equivalent to:
(thetext)[1+(index-1)*chunklength;chunklength]
See Also
- bigendianbinaryvalue( -- converts big endian binary data (a byte, word, or longword) into an unsigned number (see Binary Data).
- Binary Data -- Panorama allows a formula or procedure to work with raw binary data.
- binarydatabuild( -- builds a binary value by scanning a database and assembling individual binary values for every record (including unselected records) in the database.
- binarytotext( -- converts binary data into text, optionally using a specified encoding.
- binaryvalue( -- converts binary data (a byte, word, longword, or longlongword) into a number (see Binary Data).
- byte( -- converts a number into a single byte of binary data (see Binary Data).
- bytearray( -- extracts a value from an array of bytes (see [Binary Data]).
- bytepattern( -- converts a byte count to text: 543 Bytes, 543 Kb, 123 Mb, 3.2 Gb
- Data Arrays -- A numbered collection of data values.
- Data Dictionaries -- Overview of Panorama's key/value data dictionaries.
- hex( -- converts a text item containing a hexadecimal number into a standard number (decimal).
- hexbyte( -- converts a limited range of decimal numbers to a two-digit hexadecimal number expressed as a text string.
- hexlong( -- converts a decimal number to an eight-digit hexadecimal number expressed as a text string
- hexstr( -- converts a number to text formatted as a hexadecimal number.
- hextobinary( -- converts a sequence of hexadecimal digits into a raw binary data value.
- hexword( -- converts a decimal number to a four-digit hexadecimal number expressed as a text string.
- littleendianbinaryvalue( -- converts little endian binary data (a byte, word, longword, or longlongword) into an unsigned number (see Binary Data).
- longlongword( -- converts a number into a 64 bit longword (8 bytes) of binary data (see Binary Data).
- longlongwordarray( -- extracts a value from an array of 64 bit longlongwords (see [Binary Data]).
- longword( -- converts a number into a 32 bit longword (4 bytes) of binary data (see Binary Data).
- longwordarray( -- extracts a value from an array of 32 bit longwords (see [Binary Data]).
- radix( -- converts a text item containing a number in a radix between 2 and 36 into a decimal number.
- radixstr( -- converts a number into a text item containing the equivalent number in a radix between 2 and 36.
- signedbinaryvalue( -- converts binary data (a byte, word, longword, or longlongword) into a signed number (see Binary Data).
- texttobinary( -- converts text into binary data, optionally using a specified encoding.
- word( -- converts a number into a single word (2 bytes) of binary data (see Binary Data).
- wordarray( -- extracts a value from an array of 16 bit words (see Binary Data).
History
| 10.0 | No Change | Carried over from Panorama 6.0. |