table2struct

Convert table to structure array

Description

example

S = table2struct(T) converts the table, T, to a structure array, S. Each variable of T becomes a field in S. If T is an m-by-n table, then S is a m-by-1 structure array with n fields.

example

S = table2struct(T,'ToScalar',true) converts the table, T, to a scalar structure S. Each variable of T becomes a field in S. If T is a m-by-n table, then S has n fields, each of which has m rows.

Examples

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Create a table, T, with five rows and three variables.

T = table(categorical({'M';'M';'F';'F';'F'}),[38;43;38;40;49],...
[124 93;109 77; 125 83; 117 75; 122 80],...
'VariableNames',{'Gender' 'Age' 'BloodPressure'})
T=5×3 table
Gender    Age    BloodPressure
______    ___    _____________

M       38      124     93
M       43      109     77
F       38      125     83
F       40      117     75
F       49      122     80

Convert T to a structure array.

S = table2struct(T)
S=5×1 struct array with fields:
Gender
Age
BloodPressure

The structure is 5-by-1, corresponding to the five rows of the table, T. The three fields of S correspond to the three variables from T.

Display the field data for the first element of S.

S(1)
ans = struct with fields:
Gender: M
Age: 38
BloodPressure: [124 93]

The information corresponds to the first row of the table.

Create a table, T, with five rows and three variables.

T = table(categorical({'M';'M';'F';'F';'F'}),[38;43;38;40;49],...
[124 93;109 77; 125 83; 117 75; 122 80],...
'VariableNames',{'Gender' 'Age' 'BloodPressure'})
T=5×3 table
Gender    Age    BloodPressure
______    ___    _____________

M       38      124     93
M       43      109     77
F       38      125     83
F       40      117     75
F       49      122     80

Convert T to a scalar structure.

S = table2struct(T,'ToScalar',true)
S = struct with fields:
Gender: [5x1 categorical]
Age: [5x1 double]
BloodPressure: [5x2 double]

The data in the fields of the scalar structure are 5-by-1, corresponding to the five rows in the table T.

Display the data for the field BloodPressure.

S.BloodPressure
ans = 5×2

124    93
109    77
125    83
117    75
122    80

The structure field BloodPressure contains all of the data that was in the variable of the same name from table T.

Create a table, T, that includes row names.

T = table(categorical({'M';'M';'F';'F';'F'}),[38;43;38;40;49],...
[124 93;109 77; 125 83; 117 75; 122 80],...
'VariableNames',{'Gender' 'Age' 'BloodPressure'},...
'RowNames',{'Smith' 'Johnson' 'Williams' 'Jones' 'Brown'})
T=5×3 table
Gender    Age    BloodPressure
______    ___    _____________

Smith         M       38      124     93
Johnson       M       43      109     77
Williams      F       38      125     83
Jones         F       40      117     75
Brown         F       49      122     80

Convert T to a scalar structure.

S = table2struct(T,'ToScalar',true)
S = struct with fields:
Gender: [5x1 categorical]
Age: [5x1 double]
BloodPressure: [5x2 double]

Add a field for the row names from the table.

S.RowNames = T.Properties.RowNames
S = struct with fields:
Gender: [5x1 categorical]
Age: [5x1 double]
BloodPressure: [5x2 double]
RowNames: {5x1 cell}

If S is a nonscalar structure, use [S.RowNames] = T.Properties.RowNames{:} to include a field with the row names from the table.

Input Arguments

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Input table, specified as a table.

If T has variables whose names are not valid MATLAB® identifiers, then table2struct modifies them to create valid field names, primarily by removing spaces and replacing non-ASCII characters with underscores.