Skip to content

CLASS ndi.database.binarydoc

NDI_BINARYDOC - a binary file class that handles reading/writing

Documentation for ndi.database.binarydoc
   doc ndi.database.binarydoc

Superclasses

handle

Properties

none

Methods

Method Description
addlistener ADDLISTENER Add listener for event.
binarydoc a binary file class that handles reading/writing
delete close an ndi.database.binarydoc and delete its handle
eq == (EQ) Test handle equality.
fclose FCLOSE Close file.
feof of-file.
findobj FINDOBJ Find objects matching specified conditions.
findprop FINDPROP Find property of MATLAB handle object.
fopen FOPEN Open file.
fread FREAD Read binary data from file.
fseek FSEEK Set file position indicator.
ftell FTELL Get file position indicator.
fwrite FWRITE Write binary data to file.
ge >= (GE) Greater than or equal relation for handles.
gt > (GT) Greater than relation for handles.
isvalid ISVALID Test handle validity.
le <= (LE) Less than or equal relation for handles.
listener LISTENER Add listener for event without binding the listener to the source object.
lt < (LT) Less than relation for handles.
ne ~= (NE) Not equal relation for handles.
notify NOTIFY Notify listeners of event.

Methods help

addlistener - ADDLISTENER Add listener for event.

el = ADDLISTENER(hSource, Eventname, callbackFcn) creates a listener for the event named Eventname. The source of the event is the handle object hSource. If hSource is an array of source handles, the listener responds to the named event on any handle in the array. callbackFcn is a function handle that is invoked when the event is triggered.

el = ADDLISTENER(hSource, PropName, Eventname, Callback) adds a 
listener for a property event.  Eventname must be one of
'PreGet', 'PostGet', 'PreSet', or 'PostSet'. Eventname can be
a string scalar or character vector.  PropName must be a single 
property name specified as string scalar or character vector, or a 
collection of property names specified as a cell array of character 
vectors or a string array, or as an array of one or more 
meta.property objects.  The properties must belong to the class of 
hSource.  If hSource is scalar, PropName can include dynamic 
properties.

For all forms, addlistener returns an event.listener.  To remove a
listener, delete the object returned by addlistener.  For example,
delete(el) calls the handle class delete method to remove the listener
and delete it from the workspace.

ADDLISTENER binds the listener's lifecycle to the object that is the 
source of the event.  Unless you explicitly delete the listener, it is
destroyed only when the source object is destroyed.  To control the
lifecycle of the listener independently from the event source object, 
use listener or the event.listener constructor to create the listener.

See also LISTENER, EVENT.LISTENER, NDI.DATABASE.BINARYDOC, NOTIFY, DELETE, META.PROPERTY, EVENTS

Help for ndi.database.binarydoc/addlistener is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/addlistener
   doc handle.addlistener

binarydoc - a binary file class that handles reading/writing


delete - close an ndi.database.binarydoc and delete its handle

DELETE(NDI_BINARYDOC_OBJ)

Closes an ndi.database.binarydoc (if necessary) and then deletes the handle.


eq - == (EQ) Test handle equality.

Handles are equal if they are handles for the same object.

H1 == H2 performs element-wise comparisons between handle arrays H1 and
H2.  H1 and H2 must be of the same dimensions unless one is a scalar.
The result is a logical array of the same dimensions, where each
element is an element-wise equality result.

If one of H1 or H2 is scalar, scalar expansion is performed and the 
result will match the dimensions of the array that is not scalar.

TF = EQ(H1, H2) stores the result in a logical array of the same 
dimensions.

See also NDI.DATABASE.BINARYDOC, NDI.DATABASE.BINARYDOC/GE, NDI.DATABASE.BINARYDOC/GT, NDI.DATABASE.BINARYDOC/LE, NDI.DATABASE.BINARYDOC/LT, NDI.DATABASE.BINARYDOC/NE

Help for ndi.database.binarydoc/eq is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/eq
   doc handle.eq

fclose - FCLOSE Close file.

ST = FCLOSE(FID) closes the file associated with file identifier FID, which is an integer value obtained from an earlier call to FOPEN.
FCLOSE returns 0 if successful or -1 if not. If FID does not represent an open file, or if it is equal to 0 (standard input), 1 (standard output), or 2 (standard error), FCLOSE throws an error.

ST = FCLOSE('all') closes all open files, except 0, 1 and 2.

See also FOPEN, FERROR, FPRINTF, FREAD, FREWIND, FSCANF, FTELL, FWRITE.

feof - of-file.

ST = FEOF(FID) returns 1 if the end-of-file indicator for the file with file identifier FID has been set, and 0 otherwise. The end-of-file indicator is set when a read operation on the file associated with the FID attempts to read past the end of the file.

See also FERROR, FGETL, FGETS, FREAD, FSCANF, FOPEN.

findobj - FINDOBJ Find objects matching specified conditions.

The FINDOBJ method of the HANDLE class follows the same syntax as the MATLAB FINDOBJ command, except that the first argument must be an array of handles to objects.

HM = FINDOBJ(H, <conditions>) searches the handle object array H and 
returns an array of handle objects matching the specified conditions.
Only the public members of the objects of H are considered when 
evaluating the conditions.

See also FINDOBJ, NDI.DATABASE.BINARYDOC

Help for ndi.database.binarydoc/findobj is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/findobj
   doc handle.findobj

findprop - FINDPROP Find property of MATLAB handle object.

p = FINDPROP(H,PROPNAME) finds and returns the META.PROPERTY object associated with property name PROPNAME of scalar handle object H. PROPNAME can be a string scalar or character vector. It can be the name of a property defined by the class of H or a dynamic property added to scalar object H.

If no property named PROPNAME exists for object H, an empty 
META.PROPERTY array is returned.

See also NDI.DATABASE.BINARYDOC, NDI.DATABASE.BINARYDOC/FINDOBJ, DYNAMICPROPS, META.PROPERTY

Help for ndi.database.binarydoc/findprop is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/findprop
   doc handle.findprop

fopen - FOPEN Open file.

FID = FOPEN(FILENAME) opens the file FILENAME for read access. FILENAME is the name of the file to be opened.

FILENAME can be a MATLABPATH relative partial pathname. If the file is not found
in the current working directory, FOPEN searches for it on the MATLAB search
path. On UNIX systems, FILENAME may also start with a "~/" or a "~username/",
which FOPEN expands to the current user's home directory or the specified user's
home directory, respectively.

FID is a scalar MATLAB integer valued double, called a file identifier. You use
FID as the first argument to other file input/output routines, such as FREAD and
FCLOSE. If FOPEN cannot open the file, it returns -1.

FID = FOPEN(FILENAME,PERMISSION) opens the file FILENAME in the mode specified by
PERMISSION:

    'r'     open file for reading
    'w'     open file for writing; discard existing contents
    'a'     open or create file for writing; append data to end of file
    'r+'    open (do not create) file for reading and writing
    'w+'    open or create file for reading and writing; discard existing
            contents
    'a+'    open or create file for reading and writing; append data to end of
            file             
    'W'     open file for writing without automatic flushing
    'A'     open file for appending without automatic flushing

FILENAME can be a MATLABPATH relative partial pathname only if the file is opened
for reading.

You can open files in binary mode (the default) or in text mode. In binary mode,
no characters get singled out for special treatment. In text mode on the PC, the
carriage return character preceding a newline character is deleted on input and
added before the newline character on output. To open a file in text mode,
append 't' to the permission specifier, for example 'rt' and 'w+t'. (On Unix, text and
binary mode are the same, so this has no effect. On PC systems this is
critical.)

If the file is opened in update mode ('+'), you must use an FSEEK or FREWIND
between an input command like FREAD, FSCANF, FGETS, or FGETL and an output
command like FWRITE or FPRINTF. You must also use an FSEEK or FREWIND between an
output command and an input command.

Two file identifiers are automatically available and need not be opened. They
are FID=1 (standard output) and FID=2 (standard error).

[FID, MESSAGE] = FOPEN(FILENAME,...) returns a system dependent error message if
the open is not successful.

[FID, MESSAGE] = FOPEN(FILENAME,PERMISSION,MACHINEFORMAT) opens the specified
file with the specified PERMISSION and treats data read using FREAD or data
written using FWRITE as having a format given by MACHINEFORMAT. MACHINEFORMAT is
one of the following:

'native'      or 'n' - local machine format - the default
'ieee-le'     or 'l' - IEEE floating point with little-endian byte ordering
'ieee-be'     or 'b' - IEEE floating point with big-endian byte ordering
'ieee-le.l64' or 'a' - IEEE floating point with little-endian byte ordering and
                       64 bit long data type
'ieee-be.l64' or 's' - IEEE floating point with big-endian byte ordering and 64
                       bit long data type.

[FID, MESSAGE] = FOPEN(FILENAME,PERMISSION,MACHINEFORMAT,ENCODING)
opens the specified file using the specified PERMISSION and
MACHINEFORMAT. ENCODING specifies the name of a character encoding
scheme associated with the file. It must be the empty character vector
(''), empty string (""), or a name, or alias for an encoding scheme.
Some examples are 'UTF-8', 'latin1', 'US-ASCII', and 'Shift_JIS'. For
common names and aliases, see the Web site
http://www.iana.org/assignments/character-sets. If ENCODING is
unspecified, or is the empty character vector (''), or is the empty
string (""), MATLAB's default encoding scheme is used.

[FILENAME,PERMISSION,MACHINEFORMAT,ENCODING] = FOPEN(FID) returns the filename,
permission, machine format, and character encoding values used by MATLAB when it
opened the file associated with identifier FID. MATLAB does not determine these
output values by reading information from the opened file. For any of these
parameters that were not specified when the file was opened, MATLAB returns its
default value. The ENCODING is a standard character encoding scheme name that may
not be the same as the ENCODING argument used in the call to FOPEN that opened
the file. An invalid FID returns empty character vector ('') for all output arguments.

FIDS = FOPEN('all') returns a row vector containing the file identifiers for all
the files currently opened by the user (but not 1 or 2).

The 'W' and 'A' permissions do not automatically perform a flush of the current
output buffer after output operations.

See also FCLOSE, FERROR, FGETL, FGETS, FPRINTF, FREAD, FSCANF, FSEEK, 
         FTELL, FWRITE.

fread - FREAD Read binary data from file.

A = FREAD(FID) reads binary data from the specified file and writes it into matrix A. FID is an integer file identifier obtained from FOPEN. MATLAB reads the entire file and positions the file pointer at the end of the file (see FEOF for details).

A = FREAD(FID,SIZE) reads the number of elements specified by SIZE.  Valid
entries for SIZE are:
    N      read N elements into a column vector. 
    inf    read to the end of the file.
    [M,N]  read elements to fill an M-by-N matrix, in column order.
           N can be inf, but M can't.

A = FREAD(FID,SIZE,PRECISION) reads the file according to the data format
specified by PRECISION. The PRECISION input commonly contains a datatype
specifier like 'int' or 'float', followed by an integer giving the size in bits.
The SIZE argument is optional when using this syntax.

Any of the following values, either the MATLAB version, or their C or
Fortran equivalent, may be used for PRECISION.  If not specified, the
default PRECISION is 'uint8'.
    MATLAB    C or Fortran     Description
    'uchar'   'unsigned char'  unsigned integer,  8 bits.
    'schar'   'signed char'    signed integer,  8 bits.
    'int8'    'integer*1'      integer, 8 bits.
    'int16'   'integer*2'      integer, 16 bits.
    'int32'   'integer*4'      integer, 32 bits.
    'int64'   'integer*8'      integer, 64 bits.
    'uint8'   'integer*1'      unsigned integer, 8 bits.
    'uint16'  'integer*2'      unsigned integer, 16 bits.
    'uint32'  'integer*4'      unsigned integer, 32 bits.
    'uint64'  'integer*8'      unsigned integer, 64 bits.
    'single'  'real*4'         floating point, 32 bits.
    'float32' 'real*4'         floating point, 32 bits.
    'double'  'real*8'         floating point, 64 bits.
    'float64' 'real*8'         floating point, 64 bits.

The following platform dependent formats are also supported but they are not
guaranteed to be the same size on all platforms.

    MATLAB    C or Fortran     Description
    'char'    'char*1'         character.
    'short'   'short'          integer,  16 bits.
    'int'     'int'            integer,  32 bits.
    'long'    'long'           integer,  32 or 64 bits.
    'ushort'  'unsigned short' unsigned integer,  16 bits.
    'uint'    'unsigned int'   unsigned integer,  32 bits.
    'ulong'   'unsigned long'  unsigned integer,  32 bits or 64 bits.
    'float'   'float'          floating point, 32 bits.

If the precision is 'char' or 'char*1', MATLAB reads characters using the
encoding scheme associated with the file. See FOPEN for more information.

The following formats map to an input stream of bits rather than bytes.

    'bitN'                     signed integer, N bits  (1<=N<=64).
    'ubitN'                    unsigned integer, N bits (1<=N<=64).

If the input stream is bytes and FREAD reaches the end of file (see FEOF) in the
middle of reading the number of bytes required for an element, the partial result
is ignored. However, if the input stream is bits, then the partial result is
returned as the last value.  If an error occurs before reaching the end of file,
only full elements read up to that point are used.

By default, numeric and character values are returned in class 'double' arrays.
To return these values stored in classes other than double, create your PRECISION
argument by first specifying your source format, then following it by '=>', and
finally specifying your destination format. If the source and destination formats
are the same then the following shorthand notation may be used:

    *source

which means:

    source=>source

For example,

    uint8=>uint8               read in unsigned 8-bit integers and
                               save them in an unsigned 8-bit integer array

    *uint8                     shorthand version of previous example

    bit4=>int8                 read in signed 4-bit integers packed
                               in bytes and save them in a signed 8-bit integer
                               array (each 4-bit integer becomes one 8-bit
                               integer)

    double=>real*4             read in doubles, convert and save
                               as a 32-bit floating point array

A = FREAD(FID,SIZE,PRECISION,SKIP) includes a SKIP argument that specifies the
number of bytes to skip after each PRECISION value is read. If PRECISION
specifies a bit source format, like 'bitN' or 'ubitN', the SKIP argument is
interpreted as the number of bits to skip.  The SIZE argument is optional when
using this syntax.

When SKIP is used, the PRECISION specifier may contain a positive integer repetition factor
of the form 'N*' which prepends the source format of the PRECISION argument, like
'40*uchar'.  Note that 40*uchar for the PRECISION alone is equivalent to
'40*uchar=>double', not '40*uchar=>uchar'.  With SKIP specified, FREAD reads in,
at most, a repetition factor number of values (default of 1), does a skip of
input specified by the SKIP argument, reads in another block of values and does a
skip of input, etc. until SIZE number of values have been read.  If a SKIP
argument is not specified, the repetition factor is ignored.  Repetition with
skip is useful for extracting data in noncontiguous fields from fixed length
records.

For example,

    s = fread(fid,120,'40*uchar=>uchar',8);

reads in 120 characters in blocks of 40 each separated by 8 characters.

A = FREAD(FID,SIZE,PRECISION,SKIP,MACHINEFORMAT) treats the data read as having a
format given by the MACHINEFORMAT. You can obtain the MACHINEFORMAT argument from
the output of the FOPEN function. See FOPEN for possible values for
MACHINEFORMAT. The SIZE and SKIP arguments are optional when using this syntax.

[A, COUNT] = FREAD(...) Optional output argument COUNT returns the number of
elements successfully read.

Examples:

The file alphabet.txt contains the 26 letters of the English alphabet, all
capitalized. Open the file for read access with fopen, and read the first five
elements into output c. Because a precision has not been specified, MATLAB uses
the default precision of uchar, and the output is numeric:

fid = fopen('alphabet.txt', 'r');
c = fread(fid, 5)'
c =
    65    66    67    68    69
fclose(fid);

This time, specify that you want each element read as an unsigned 8-bit integer
and output as a character. (Using a precision of 'char=>char' or '*char' will
produce the same result):

fid = fopen('alphabet.txt', 'r');
c = fread(fid, 5, 'uint8=>char')'
c =
    ABCDE
fclose(fid);

See also FWRITE, FSEEK, FSCANF, FGETL, FGETS, LOAD, FOPEN, FEOF.

fseek - FSEEK Set file position indicator.

STATUS = FSEEK(FID, OFFSET, ORIGIN) repositions the file position indicator in the file associated with the given FID. FSEEK sets the position indicator to the byte with the specified OFFSET relative to ORIGIN.

FID is an integer file identifier obtained from FOPEN.

OFFSET values are interpreted as follows:
    >= 0    Move position indicator OFFSET bytes after ORIGIN.
    < 0    Move position indicator OFFSET bytes before ORIGIN.

ORIGIN values are interpreted as follows:
    'bof' or -1   Beginning of file
    'cof' or  0   Current position in file
    'eof' or  1   End of file

STATUS is 0 on success and -1 on failure.  If an error occurs, use
FERROR to get more information.

Example:

    fseek(fid,0,-1)

"rewinds" the file.

See also FERROR, FOPEN, FPRINTF, FREAD, FREWIND, FSCANF, FSEEK, FTELL, 
         FWRITE.

ftell - FTELL Get file position indicator.

POSITION = FTELL(FID) returns the location of the file position indicator in the specified file. Position is indicated in bytes from the beginning of the file. If -1 is returned, it indicates that the query was unsuccessful. Use FERROR to determine the nature of the error.

FID is an integer file identifier obtained from FOPEN.

See also FERROR, FOPEN, FPRINTF, FREAD, FREWIND, FSCANF, FSEEK, FWRITE.

fwrite - FWRITE Write binary data to file.

COUNT = FWRITE(FID,A) writes the elements of matrix A to the specified file. The data are written in column order. COUNT is the number of elements successfully written.

FID is an integer file identifier obtained from FOPEN, or 1 for standard output
or 2 for standard error.

COUNT = FWRITE(FID,A,PRECISION) writes the elements of matrix A to the specified
file, translating MATLAB values to the specified precision.

PRECISION controls the form and size of the result.  See the list of allowed
precisions under FREAD. If PRECISION is not specified, MATLAB uses the default,
which is 'uint8'. If either 'bitN' or 'ubitN' is used for the PRECISION then any
out of range value of A is written as a value with all bits turned on. If the
precision is 'char' or 'char*1', MATLAB writes characters using the encoding
scheme associated with the file. See FOPEN for more information.

COUNT = FWRITE(FID,A,PRECISION,SKIP) includes an optional SKIP argument that
specifies the number of bytes to skip before each PRECISION value is written.
With the SKIP argument present, FWRITE skips and writes a value, skips and writes
another value, etc. until all of A is written.  If PRECISION is a bit format like
'bitN' or 'ubitN' SKIP is specified in bits. This is useful for inserting data
into noncontiguous fields in fixed length records.

COUNT = FWRITE(FID,A,PRECISION,SKIP,MACHINEFORMAT) treats the data written as
having a format given by MACHINEFORMAT. You can obtain the MACHINEFORMAT argument
from the output of the FOPEN function. See FOPEN for possible values for
MACHINEFORMAT.

For example,

    fid = fopen('magic5.bin','wb')
    fwrite(fid,magic(5),'integer*4')

creates a 100-byte binary file, containing the 25 elements of the 5-by-5 magic
square, stored as 4-byte integers.

See also FOPEN, FREAD, FPRINTF, SAVE, DIARY.

ge - >= (GE) Greater than or equal relation for handles.

H1 >= H2 performs element-wise comparisons between handle arrays H1 and H2. H1 and H2 must be of the same dimensions unless one is a scalar. The result is a logical array of the same dimensions, where each element is an element-wise >= result.

If one of H1 or H2 is scalar, scalar expansion is performed and the 
result will match the dimensions of the array that is not scalar.

TF = GE(H1, H2) stores the result in a logical array of the same 
dimensions.

See also NDI.DATABASE.BINARYDOC, NDI.DATABASE.BINARYDOC/EQ, NDI.DATABASE.BINARYDOC/GT, NDI.DATABASE.BINARYDOC/LE, NDI.DATABASE.BINARYDOC/LT, NDI.DATABASE.BINARYDOC/NE

Help for ndi.database.binarydoc/ge is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/ge
   doc handle.ge

gt - > (GT) Greater than relation for handles.

H1 > H2 performs element-wise comparisons between handle arrays H1 and H2. H1 and H2 must be of the same dimensions unless one is a scalar.
The result is a logical array of the same dimensions, where each element is an element-wise > result.

If one of H1 or H2 is scalar, scalar expansion is performed and the 
result will match the dimensions of the array that is not scalar.

TF = GT(H1, H2) stores the result in a logical array of the same 
dimensions.

See also NDI.DATABASE.BINARYDOC, NDI.DATABASE.BINARYDOC/EQ, NDI.DATABASE.BINARYDOC/GE, NDI.DATABASE.BINARYDOC/LE, NDI.DATABASE.BINARYDOC/LT, NDI.DATABASE.BINARYDOC/NE

Help for ndi.database.binarydoc/gt is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/gt
   doc handle.gt

isvalid - ISVALID Test handle validity.

TF = ISVALID(H) performs an element-wise check for validity on the handle elements of H. The result is a logical array of the same dimensions as H, where each element is the element-wise validity result.

A handle is invalid if it has been deleted or if it is an element
of a handle array and has not yet been initialized.

See also NDI.DATABASE.BINARYDOC, NDI.DATABASE.BINARYDOC/DELETE

Help for ndi.database.binarydoc/isvalid is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/isvalid
   doc handle.isvalid

le - <= (LE) Less than or equal relation for handles.

Handles are equal if they are handles for the same object. All comparisons use a number associated with each handle object. Nothing can be assumed about the result of a handle comparison except that the repeated comparison of two handles in the same MATLAB session will yield the same result. The order of handle values is purely arbitrary and has no connection to the state of the handle objects being compared.

H1 <= H2 performs element-wise comparisons between handle arrays H1 and
H2.  H1 and H2 must be of the same dimensions unless one is a scalar.
The result is a logical array of the same dimensions, where each
element is an element-wise >= result.

If one of H1 or H2 is scalar, scalar expansion is performed and the 
result will match the dimensions of the array that is not scalar.

TF = LE(H1, H2) stores the result in a logical array of the same 
dimensions.

See also NDI.DATABASE.BINARYDOC, NDI.DATABASE.BINARYDOC/EQ, NDI.DATABASE.BINARYDOC/GE, NDI.DATABASE.BINARYDOC/GT, NDI.DATABASE.BINARYDOC/LT, NDI.DATABASE.BINARYDOC/NE

Help for ndi.database.binarydoc/le is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/le
   doc handle.le

listener - LISTENER Add listener for event without binding the listener to the source object.

el = LISTENER(hSource, Eventname, callbackFcn) creates a listener for the event named Eventname. The source of the event is the handle
object hSource. If hSource is an array of source handles, the listener responds to the named event on any handle in the array. callbackFcn is a function handle that is invoked when the event is triggered.

el = LISTENER(hSource, PropName, Eventname, callback) adds a 
listener for a property event.  Eventname must be one of  
'PreGet', 'PostGet', 'PreSet', or 'PostSet'. Eventname can be a 
string sclar or character vector.  PropName must be either a single 
property name specified as a string scalar or character vector, or 
a collection of property names specified as a cell array of character 
vectors or a string array, or as an array of one ore more 
meta.property objects. The properties must belong to the class of 
hSource.  If hSource is scalar, PropName can include dynamic 
properties.

For all forms, listener returns an event.listener.  To remove a
listener, delete the object returned by listener.  For example,
delete(el) calls the handle class delete method to remove the listener
and delete it from the workspace.  Calling delete(el) on the listener
object deletes the listener, which means the event no longer causes
the callback function to execute.

LISTENER does not bind the listener's lifecycle to the object that is
the source of the event.  Destroying the source object does not impact
the lifecycle of the listener object.  A listener created with LISTENER
must be destroyed independently of the source object.  Calling 
delete(el) explicitly destroys the listener. Redefining or clearing 
the variable containing the listener can delete the listener if no 
other references to it exist.  To tie the lifecycle of the listener to 
the lifecycle of the source object, use addlistener.

See also ADDLISTENER, EVENT.LISTENER, NDI.DATABASE.BINARYDOC, NOTIFY, DELETE, META.PROPERTY, EVENTS

Help for ndi.database.binarydoc/listener is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/listener
   doc handle.listener

lt - < (LT) Less than relation for handles.

H1 < H2 performs element-wise comparisons between handle arrays H1 and H2. H1 and H2 must be of the same dimensions unless one is a scalar. The result is a logical array of the same dimensions, where each element is an element-wise < result.

If one of H1 or H2 is scalar, scalar expansion is performed and the 
result will match the dimensions of the array that is not scalar.

TF = LT(H1, H2) stores the result in a logical array of the same 
dimensions.

See also NDI.DATABASE.BINARYDOC, NDI.DATABASE.BINARYDOC/EQ, NDI.DATABASE.BINARYDOC/GE, NDI.DATABASE.BINARYDOC/GT, NDI.DATABASE.BINARYDOC/LE, NDI.DATABASE.BINARYDOC/NE

Help for ndi.database.binarydoc/lt is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/lt
   doc handle.lt

ne - ~= (NE) Not equal relation for handles.

Handles are equal if they are handles for the same object and are unequal otherwise.

H1 ~= H2 performs element-wise comparisons between handle arrays H1 
and H2.  H1 and H2 must be of the same dimensions unless one is a 
scalar.  The result is a logical array of the same dimensions, where 
each element is an element-wise equality result.

If one of H1 or H2 is scalar, scalar expansion is performed and the 
result will match the dimensions of the array that is not scalar.

TF = NE(H1, H2) stores the result in a logical array of the same
dimensions.

See also NDI.DATABASE.BINARYDOC, NDI.DATABASE.BINARYDOC/EQ, NDI.DATABASE.BINARYDOC/GE, NDI.DATABASE.BINARYDOC/GT, NDI.DATABASE.BINARYDOC/LE, NDI.DATABASE.BINARYDOC/LT

Help for ndi.database.binarydoc/ne is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/ne
   doc handle.ne

notify - NOTIFY Notify listeners of event.

NOTIFY(H, eventname) notifies listeners added to the event named eventname for handle object array H that the event is taking place. eventname can be a string scalar or character vector.
H is the array of handles to the event source objects, and 'eventname' must be a character vector.

NOTIFY(H,eventname,ed) provides a way of encapsulating information 
about an event which can then be accessed by each registered listener.
ed must belong to the EVENT.EVENTDATA class.

See also NDI.DATABASE.BINARYDOC, NDI.DATABASE.BINARYDOC/ADDLISTENER, NDI.DATABASE.BINARYDOC/LISTENER, EVENT.EVENTDATA, EVENTS

Help for ndi.database.binarydoc/notify is inherited from superclass HANDLE

Documentation for ndi.database.binarydoc/notify
   doc handle.notify