table2struct

Convert table to structure array

Syntax

S = table2struct(T)

S = table2struct(T,'ToScalar',true)

Description

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.

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

Convert Table to Structure Array

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.

Convert Table to Scalar Structure

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.

Convert Table with Row Names to Structure

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

T — Input table

table

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.

Extended Capabilities

C/C++ Code Generation

Generate C and C++ code using MATLAB® Coder™.

Usage notes and limitations:

• In generated code, the input table must be constant when using this function. For more information, see Code Generation for Tables (MATLAB Coder) and Table Limitations for Code Generation (MATLAB Coder).