istable

Determine if input is table

Syntax

tf = istable(A)

Description

tf = istable(A) returns logical 1 (true) if A is a table, and logical 0 (false) otherwise.

Examples

Determine If Input Is Table

Create a table, T.

T = table(categorical(["M";"F";"M"]),[45 45;41 32;40 34],...
    ["NY";"CA";"MA"],[true;false;false])

T=3×4 table
    Var1      Var2      Var3    Var4 
    ____    ________    ____    _____

     M      45    45    "NY"    true 
     F      41    32    "CA"    false
     M      40    34    "MA"    false

Verify that T is a table.

tf = istable(T)

tf = logical
   1

Test Data Extracted from Table

Create a table, T.

T = table(categorical(["M";"F";"M"]),[45 45;41 32;40 34],...
    ["NY";"CA";"MA"],[true;false;false])

T=3×4 table
    Var1      Var2      Var3    Var4 
    ____    ________    ____    _____

     M      45    45    "NY"    true 
     F      41    32    "CA"    false
     M      40    34    "MA"    false

Extract the second and fourth variables from T. When you index into a table using smooth parentheses, the result is a table.

T2 = T(:,[2 4])

T2=3×2 table
      Var2      Var4 
    ________    _____

    45    45    true 
    41    32    false
    40    34    false

tf = istable(T2)

tf = logical
   1

Extract data from the second and fourth variables. When you index into a table using curly braces, the result is a matrix, not a table.

A = T{:,[2 4]}

A = 3×3

    45    45     1
    41    32     0
    40    34     0

tf = istable(A)

tf = logical
   0

Input Arguments

A — Input array

array

Input array.

Extended Capabilities

Thread-Based Environment
Run code in the background using MATLAB® backgroundPool or accelerate code with Parallel Computing Toolbox™ ThreadPool.

Distributed Arrays

Partition large arrays across the combined memory of your cluster using Parallel Computing Toolbox™.

This function fully supports distributed arrays. For more information, see Run MATLAB Functions with Distributed Arrays (Parallel Computing Toolbox).

Version History

Introduced in R2013b