tic ------- matlab timer start
toc ------ matlab time-up
eg:
tic;
exp;
TOC = time; % time assigned to the measured time
num2str () to digital converter to a string
matlab data in a matrix as a unit, a scalar can be seen as a 1X1 matrix, a string is essentially a matrix.
But there is more than a set of matrix it?
The answer is a tuple cell, a tuple can be stored in different data types, but only the same type of data storage matrix.
Can be imagined, the same type of data among the respective elements in a matrix, the matrix after compression, and then combined into a tuple
Tuple enclosed with {}, can be divided mXn tuples, whose dimension is compressed in units of packets.
If A is a tuple, then a () index tuple can also archive all means one (i.e., the type of data cell ), only a {} used to extract the index of the matrix.
When assignment of tuples, the use of a () = `` manner, the need to compress the matrix, particularly a matrix operation on both sides is combined with the use of a ,,} {a {} = ``, can be directly assigned .
In addition, nested tuple may also be implemented between the tuple, i.e., further comprising a tuple, or itself comprising
Matrix structure is larger than a set, the structure may comprise tuples, tuples may contain a structure, but can not contain any of a matrix of both.
b = struct ( 'field' value)
Matlab structure of recording attribute information for an object, only a structure of an example of recording information ,, e.g. student (object) has a student number, name, sex and other attributes,
The attributes field is a struct can be used ,, b. Assigned to the field values on a specific field, such as b. Name = 'five hundred sixty-seven'
So a struct can represent a student (example), you can put more of a tuple struct in which such a tuple can represent a class of students the information,
Also can be placed in the tuple tuple larger, so that you can represent a college student information.
The struct type field can be divided mXn, when the number of dimensions is only a value field when a tuple (a tuple comprising the structure), the dimension of the tuple is the number of fields,
At this time, other non-tuple field of the structure is automatically expanded into that dimension.
If Dimensions of the fields of a tuple structure is different, the error returns matlab
