MATLAB Programming Fundamentals - MathWorks

Add and Delete Table Rows

This example shows how to add and delete rows in a table. You can also edit tables using

the Variables Editor.

Load Sample Data

Load the sample patients data and create a table, T.

load patients

T = table(LastName,Gender,Age,Height,Weight,Smoker,Systolic,Diastolic);

size(T)

ans = 1×2

100 8

The table, T, has 100 rows and eight variables (columns).

Add Rows by Concatenation

Read data on more patients from a comma-delimited file, morePatients.csv, into a

table, T2. Then, append the rows from T2 to the end of the table, T.

T2 = readtable('morePatients.csv');

Tnew = [T;T2];

size(Tnew)

ans = 1×2

104 8

The table Tnew has 104 rows. In order to vertically concatenate two tables, both tables

must have the same number of variables, with the same variable names. If the variable

names are different, you can directly assign new rows in a table to rows from another

table. For example, T(end+1:end+4,:) = T2.

Add Rows from Cell Array

To append new rows stored in a cell array, vertically concatenate the cell array onto the

end of the table. You can concatenate directly from a cell array when it has the right

9 Tables