# HOW DO I DO THAT IN MATLAB SERIES?

In this series, I am answering questions that students have asked me about MATLAB. Most of the questions relate to a mathematical procedure.

## TOPIC

How do I display arrays in MATLAB?

## SUMMARY

```% Language : Matlab 2008a;
% Authors : Autar Kaw and Jeremy Baker;
% Mfile available at
% http://numericalmethods.eng.usf.edu/blog/displaying_arrays.m;
% Last Revised : July 8, 2009;
% Abstract: This program shows you how to display arrays in MATLAB
clc
clear all
```

## INTRODUCTION

```disp('ABSTRACT')
disp('   This program shows you how to display arrays')
disp(' ')
disp('AUTHOR')
disp('   Autar K Kaw of http://autarkaw.wordpress.com and Jeremy Baker')
disp(' ')
disp('MFILE SOURCE')
disp('   http://numericalmethods.eng.usf.edu/blog/displaying_arrays.m')
disp(' ')
disp('LAST REVISED')
disp('   July 8, 2009')
disp(' ')
```
```ABSTRACT
This program shows you how to display arrays

AUTHOR
Autar K Kaw of http://autarkaw.wordpress.com and Jeremy Baker

MFILE SOURCE
http://numericalmethods.eng.usf.edu/blog/displaying_arrays.m

LAST REVISED
July 8, 2009

```

## INPUTS

Input x and y arrays, for example as y vs x data

```x=[1  4  5   7 ];
y=[12  23  34  100];
```

## DISPLAYING INPUTS METHOD 1

```disp('INPUTS - Method 1')
n=length(x);
fprintf('The number of data points is %g \n',n)
disp('________________________')
disp('  x-values    y values  ')
disp('________________________')
for i=1:1:n
fprintf('      %g          %g \n',x(i), y(i)')
end
disp('________________________')
```
```INPUTS - Method 1
The number of data points is 4
________________________
x-values    y values
________________________
1          12
4          23
5          34
7          100
________________________
```

## DISPLAYING INPUTS METHOD 2

Suggested by guest blogger Jeremy Baker

```disp('  ')
disp('INPUTS - Method 2')
n=length(x);
fprintf('The number of data points is %g \n',n)
disp('________________________')
disp('     x    y  ')
disp('________________________')
dataval=[x;y]';
disp(dataval)
disp('________________________')
```
```
INPUTS - Method 2
The number of data points is 4
________________________
x    y
________________________
1    12
4    23
5    34
7   100

________________________
```