cell contents assignment to a non cell array object matlab

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How to fix: Cell contents assignment to a non-cell array object?

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How can I solve this error 'Cell contents assignment to a non-cell array object.'?

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error Cell contents assignment to a non-cell array object.

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cell contents assignment to a non-cell array object

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Now it's working. Thank you :)

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Mastering Cell Contents Assignment: A Comprehensive Guide to Non-Cell Array Objects

In this guide, we'll explore non-cell array objects, their manipulation, and delve into the different ways to assign contents to cells. With a step-by-step approach, we'll answer common questions and provide useful resources for working with cell arrays in MATLAB.

Table of Contents

Introduction to non-cell array objects, creating and manipulating non-cell array objects, assigning cell contents, using semicolon to concatenate arrays, additional resources.

Non-cell array objects, such as numeric arrays, character arrays, and structure arrays, are essential data structures in MATLAB. They store and manipulate different types of data, making them vital for numerous applications.

• Numeric Arrays : Store numeric values in a matrix or vector format. They can be of different types, such as double , single , int8 , int16 , int32 , int64 , uint8 , uint16 , uint32 , and uint64 .
• Character Arrays : Store text and characters in an array format. They can be of variable length, and the elements can be accessed using array indexing.
• Structure Arrays : Store diverse data types in a single array, where each element can have multiple fields with different data types.

To learn more about MATLAB data types, visit the official documentation .

In this section, we'll go through the steps to create and manipulate non-cell array objects.

Numeric Arrays

Character arrays, structure arrays.

To assign contents to a cell, you can use different methods, such as cell assignment or content assignment.

Cell Assignment

Content assignment.

The semicolon operator can be used to concatenate arrays vertically.

How do I create an empty cell array in MATLAB?

How can i concatenate cell arrays horizontally, how do i convert a cell array to a numeric array in matlab, how do i find the size of a cell array in matlab, how do i access the contents of a cell array in matlab.

• MATLAB Data Types Documentation
• MATLAB Cell Arrays Documentation
• Official MATLAB Tutorials

For more information on working with MATLAB, refer to the official documentation .

How Local Variables with the Same Names Can Perform Different Functions

Resolving the 'undefined operator *' error for function_handle input arguments: a comprehensive guide, step-by-step guide to find a number in a matrix in matlab, how to find an input value that yields the same output - comprehensive guide, step-by-step guide to check if a number is an integer in matlab, step-by-step guide to load a function in matlab, step-by-step guide to writing equations in matlab, step-by-step guide to creating a diagonal matrix in matlab, error in lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) : 0 (non-na) cases (resolved), understanding and resolving: operands to the || and && operators must be convertible to logical scalar values - a comprehensive guide.

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how to fix Cell contents assignment to a non-cell array object.?

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Description

A cell array is a data type with indexed data containers called cells , where each cell can contain any type of data. Cell arrays commonly contain either lists of text, combinations of text and numbers, or numeric arrays of different sizes. Refer to sets of cells by enclosing indices in smooth parentheses, () . Access the contents of cells by indexing with curly braces, {} .

When you have data to put into a cell array, create the array using the cell array construction operator, {} .

You also can use {} to create an empty 0-by-0 cell array.

To create a cell array with a specified size, use the cell function, described below.

You can use cell to preallocate a cell array to which you assign data later. cell also converts certain types of Java ® , .NET, and Python ® data structures to cell arrays of equivalent MATLAB ® objects.

C = cell( n ) returns an n -by- n cell array of empty matrices.

C = cell( sz1,...,szN ) returns a sz1 -by-...-by- szN cell array of empty matrices where sz1,...,szN indicate the size of each dimension. For example, cell(2,3) returns a 2-by-3 cell array.

C = cell( sz ) returns a cell array of empty matrices where size vector sz defines size(C) . For example, cell([2 3]) returns a 2-by-3 cell array.

D = cell( obj ) converts a Java array, .NET System.String or System.Object array, or Python sequence into a MATLAB cell array.

Input Arguments

N — size of square cell array integer value.

Size of a square cell array, specified as an integer value.

If n is 0 , then C is an empty cell array.

If n is negative, then it is treated as 0 .

Data Types: double | single | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64

sz1,...,szN — Sizes of dimensions integer values

Sizes of the dimensions of the cell array, specified as integer values.

If the size of any dimension is 0 , then C is an empty cell array.

If the size of any dimension is negative, then it is treated as 0 .

Beyond the second dimension, cell ignores trailing dimensions with a size of 1. For example, cell(3,1,1,1) produces a 3-by-1 cell array of empty matrices.

sz — Size row vector of integers

Size, specified as a row vector of integers. Each element of sz indicates the size of the corresponding dimension.

Beyond the second dimension, cell ignores trailing dimensions with a size of 1. For example, cell([3 1 1 1]) produces a 3-by-1 cell array of empty matrices.

Example: sz = [2 3 4] creates a 2-by-3-by-4 cell array of empty matrices.

obj — Input array Java array or object | .NET array of type System.String or System.Object | Python sequence type

Input array, specified as:

Java array or object

.NET array of type System.String or System.Object

Python sequence type

Output Arguments

C — output array cell array.

Output array, returned as a cell array. Each cell contains an empty, 0-by-0 array of type double .

D — Converted array cell array

Converted array, returned as a cell array.

Each cell contains a MATLAB object that has a type closest to the corresponding Java, .NET, or Python type. For more information, see:

Handle Data Returned from Java Methods

Automatically Convert Python Types to MATLAB Types

.NET Type to MATLAB Type Mapping

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• Create Cell Array

When related pieces of data have different data types, you can keep them together in a cell array. Each cell contains a piece of data. To refer to elements of a cell array, use array indexing. You can index into a cell array using smooth parentheses, () , and into the contents of cells using curly braces, {} .

Create a cell array that contains several temperature readings taken on a given date. Specify a date as a character vector, and temperatures as an array of doubles. To store these pieces of data in a cell array, enclose them in curly braces.

Add readings for different dates to the cell array. One way to add more cells is to expand the cell array by assignment, just as you can expand an ordinary array.

Index into the first row of C . When you index with smooth parentheses, () , the result is a cell array that is a subset of the cell array.

Index into the contents of a cell. When you index with curly braces, {} , the result is the piece of data that is contained in the specified cell.

Square Cell Array

Create a 3-by-3 cell array of empty matrices.

3-D Cell Array

Create a 3-by-4-by-2 cell array of empty matrices.

Clone Size from Existing Array

Create a cell array of empty matrices that is the same size as an existing array.

It is a common pattern to combine the previous two lines of code into a single line.

Creating a cell array of empty matrices with the cell function is equivalent to assigning an empty matrix to the last index of a new cell array. For example, these two statements are equivalent:

Extended Capabilities

C/c++ code generation generate c and c++ code using matlab® coder™..

Usage notes and limitations:

See Cell Array Limitations for Code Generation (MATLAB Coder) .

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

This function fully supports thread-based environments. For more information, see Run MATLAB Functions in Thread-Based Environment .

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

See distributed.cell (Parallel Computing Toolbox) .

Version History

R2023b: partial contents as well as size and data type of arrays in cells are displayed.

Between R2021b and R2023b, MATLAB displayed the entire contents of an array in a cell if the contents fit in the display. If the array did not fit, MATLAB showed as much of the array as the display allowed.

Starting in R2023b, if the entire contents of an array in a cell do not fit in the display, MATLAB shows as much of the array as the display allows, as well as the size and data type of the array. For example, as of R2023b, MATLAB displays partial contents as well as size and data type for a cell that contains an array of 100 double values.

If the first element of the array is itself too large to display, such as an enumeration member with a long name, MATLAB displays only the size and data type of the array.

The disp function follows the same behavior.

R2021b: Partial contents of arrays in cells are displayed instead of size and data type

Before R2021b, MATLAB displayed the entire contents of an array in a cell if the contents fit in the display. If the array did not fit, MATLAB displayed the size and data type of the array.

Starting in R2021b, if the entire contents of an array do not fit in the display, MATLAB shows as much of the array as space allows instead of the size and data type. For example, as of R2021b, MATLAB displays partial contents of a cell that contains an array of 100 double values.

If the first element of the array is itself too large to display, such as an enumeration member with a long name, MATLAB displays only the size and data type.

R2019a: Cell array expansion is consistent with general array expansion

Starting in R2019a, the dimensions of an expanded cell array are consistent whether you use curly braces or parentheses for indices. Previously, the output dimensions were different when you did not specify indices for all dimensions. Indexing with curly braces now matches the previous behavior for indexing with parentheses, which is consistent with general array expansion. For example:

If C is 1-by-2-by-3-by-4, then C(5,2)={3} and C{5,2}=3 both expand C to 5-by-2-by-3-by-4. Previously, C{5,2}=3 resulted in a 5-by-24 array.

If C is 0-by-5 or 5-by-0, then C(3)={2} and C{3}=2 expand C to 1-by-3. Previously, C{3}=2 resulted in a 1-by-5 array when C was 0-by-5 and in a 3-by-1 array when C was 5-by-0.

If C is 0-by-2-by-3, then C(3)={2} and C{3}=2 produce errors because it is ambiguous which dimension to expand. Previously, C{3}=2 resulted in a 1-by-6 array.

num2cell | table2cell | iscell | cell2mat | cell2struct | cell2table | mat2cell | struct2cell

• Preallocate Memory for Cell Array
• Access Data in Cell Array

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