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grammar
C = horzcat(A,B)
C = horzcat(A1,A2,…,An)
Input parameters
A-first input
Scalar | Vector | Matrix | Multidimensional Array | Table | Timetable The
first input, specified as a scalar, vector, matrix, multidimensional array, table or timetable.
B-second input
Scalar | Vector | Matrix | Multidimensional Array | Table | Timetable The
second input, specified as a scalar, vector, matrix, multidimensional array, table or timetable.
The elements of B are concatenated along the second dimension to the end of the first input. The size of the input parameters must be compatible. For example, if the first input is a matrix of size 3×2, then B must have 3 rows.
All table entries must have unique variable names. If there are row names, they must be exactly the same (except for the order).
All timetable entries must have the same row time, and each column must have a different name.
A1,A2,…,An-input list
Comma separated list
The input list is specified as a comma-separated list, and the list elements will be concatenated according to their order in the list.
The input must have a compatible size. For example, if A1 is a column vector of length m, the remaining inputs must each have m rows to be horizontally concatenated.
All table entries must have unique variable names. If there are row names, they must be exactly the same (except for the order).
All timetable entries must have the same row time, and each column must have a different name.
Description
When A and B have compatible sizes (except for the second dimension, the lengths of other dimensions need to match), C = horzcat(A,B)connect B horizontally to the end of A.
C = horzcat(A1,A2,…,An) A1, A2,..., An are connected in series horizontally.
horzcat is equivalent to using square brackets to concatenate arrays horizontally. For example, when A and B are compatible arrays, [A,B] or [AB] is equal to horzcat(A,B).
Instance
Two matrices
Create two matrices and concatenate them horizontally-first concatenate them using square bracket notation, then concatenate them using horzcat.
>> A=magic(5);
>> A(4:5,:)=[]
A =
17 24 1 8 15
23 5 7 14 16
4 6 13 20 22
>> B=magic(3)*100
B =
800 100 600
300 500 700
400 900 200
>> C=[A,B]
C =
17 24 1 8 15 800 100 600
23 5 7 14 16 300 500 700
4 6 13 20 22 400 900 200
>> D = horzcat(A,B)
D =
17 24 1 8 15 800 100 600
23 5 7 14 16 300 500 700
4 6 13 20 22 400 900 200
>>
Two tables
Create a table A with three rows and two variables.
>> A = table([5;6;5],['M';'M';'M'],...
'VariableNames',{
'Age' 'Gender'},...
'RowNames',{
'Thomas' 'Gordon' 'Percy'})
A=3×2 table
Age Gender
___ ______
Thomas 5 M
Gordon 6 M
Percy 5 M
Create a table B with three rows and three variables.
>> B = table([45;41;40],[45;32;34],{
'NY';'CA';'MA'},...
'VariableNames',{
'Height' 'Weight' 'Birthplace'},...
'RowNames',{
'Percy' 'Gordon' 'Thomas'})
B=3×3 table
Height Weight Birthplace
______ ______ __________
Percy 45 45 {
'NY'}
Gordon 41 32 {
'CA'}
Thomas 40 34 {
'MA'}
Then connect A and B horizontally. The order of the rows in C matches the order of A.
>> C = horzcat(A,B)
C=3×5 table
Age Gender Height Weight Birthplace
___ ______ ______ ______ __________
Thomas 5 M 40 34 {
'MA'}
Gordon 6 M 41 32 {
'CA'}
Percy 5 M 45 45 {
'NY'}
Have different types of dates
Concatenate date character vector, string date, and date time into a date row. The result is a datetime row vector.
>> chardate = '2020-03-24';
>> strdate = "2020-04-19";
>> t = datetime('2020-05-10','InputFormat','yyyy-MM-dd');
>> C = horzcat(chardate,strdate,t)
C = 1x3 datetime
24-Mar-2020 19-Apr-2020 10-May-2020
String array
Concatenate three string arrays into one array.
>> A1 = ["str1"; "str2"];
>> A2 = ["str3"; "str4"];
>> A3 = ["str5"; "str6"];
>> C = horzcat(A1,A2,A3)
C = 2x3 string
"str1" "str3" "str5"
"str2" "str4" "str6"
Matrix in cell array
Create a cell array containing two matrices. Concatenate the matrices in the cell array horizontally into a matrix.
>> M1 = [1 2; 3 4];
>> M2 = [5 6 7; 8 9 10];
>> A1 = {
M1,M2};
>> C = horzcat(A1{
:})
C = 2×5
1 2 5 6 7
3 4 8 9 10
prompt
Through to construct a series of text strings, character or character vector Vector cellular array level , using the strcatfunction.
To the character array or vector of cellular text string array configuration section delimited , use strjoinfunction.
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