PLOTING DATA INTO GRAPHICS

EXECUTE THE RESULTS OF NUMBER, MATRIX, VECTOR OPERATIONS AND CONVERT THEM INTO GRAPHICS?

form book: Menke, W., 2024, Geophysical Data Analysis and Inverse Theory, Academic Press.

[Walter Roberson]

What is your question about MATLAB?

The diagrams appear to give complete MATLAB code, except for creation of t and d

[meoui]

how CREATE A PRORAM BY PLOTING A DATA MATRIX, VECTOR

[DGM]

There is no specific question. If you want to practice, just start practicing.

% some matrices
A = [1 0 2; 0 1 0; 2 0 1];
B = [1 0 -1; 0 2 0; 1 0 3];
C = [2 0 1; 0 3 0; 3 0 4];

% some column vectors
a = [1; 3; 5]; 
b = [2; 4; 6];

% basic matrix arithmetic
S = A + B

S = 3x3

2 0 1 0 3 0 3 0 4

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D = A - B

D = 3x3

0 0 3 0 -1 0 1 0 -2

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P = A * B

P = 3x3

3 0 5 0 2 0 3 0 1

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% various notes from the body text
% the text emphasizes that these aren't generally equivalent
% but the book gives a poor example since A = A' in this case
Q1 = A'*B

Q1 = 3x3

3 0 5 0 2 0 3 0 1

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Q2 = A*B

Q2 = 3x3

3 0 5 0 2 0 3 0 1

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% multiplication is not commutative
% these should differ
P1 = A*B

P1 = 3x3

3 0 5 0 2 0 3 0 1

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P2 = B*A

P2 = 3x3

-1 0 1 0 2 0 7 0 5

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% multiplication is associative
% these should be the same
P3 = (A*B)*C

P3 = 3x3

21 0 23 0 6 0 9 0 7

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P4 = A*(B*C)

P4 = 3x3

21 0 23 0 6 0 9 0 7

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% multiplication is distributive
% these should be the same
P5 = A*(B+C) 

P5 = 3x3

11 0 14 0 5 0 10 0 7

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P6 = A*B + A*C

P6 = 3x3

11 0 14 0 5 0 10 0 7

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% the transpose of a product
% these should be the same
P7 = (A*B)'

P7 = 3x3

3 0 3 0 2 0 5 0 1

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P8 = B'*A'

P8 = 3x3

3 0 3 0 2 0 5 0 1

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% equivalent forms of the inner product
% these should be the same
s1 = a'*b

s1 = 44

s2 = b'*a

s2 = 44

% sum of squares (squared length)
sl = a'*a

sl = 35

% the outer product
os = a*b'

os = 3x3

2 4 6 6 12 18 10 20 30

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% this is a literal character vector
myfilename = 'mydata.txt'

myfilename = 'mydata.txt'

% programmatically generate character vectors
k = 1; 
myfilename = sprintf('myfile_%03d.txt',k) % use leading zeros

myfilename = 'myfile_001.txt'

d = 10.40;
mysentence = sprintf('distance d is %.2f football fields',d)

mysentence = 'distance d is 10.40 football fields'

% get some data from somewhere
tbl = readmatrix('TemperatureData.csv','range','C1:D32');
day = tbl(:,1);
temp = tbl(:,2);

% and make a graph
hold on
set(gca,'linewidth',2,'fontsize',12)
plot(day,temp,'r-','linewidth',2);
plot(day,temp,'ko','linewidth',2);
xlabel('Day')
ylabel('Temperature (\circ F)')
title('Temperature for January 2015')

... and so on. I'm surprised I typed that much before I got bored. I'm assuming you don't actually need dlmwrite().

If you want to go over basics, see MATLAB Onramp:

https://matlabacademy.mathworks.com/?page=1&sort=featured

If you don't have a copy of MATLAB, you should be able to use MATLAB Online on a time-limited basis per month for free.