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To write:
A
Answer to Problem 27E
Solution:
The file is,
%MATLAB code to load the data and create a data structure file.
%structure file.
stormdata = [321 2.4 1.5]
save stormdata.dat stormdata -ascii
stormdata = [111 3.3 12.1]
save stormdata.dat stormdata -ascii
clear
load stormdata.dat
%end of function file
%The function file should be placed in the same folder
The function file is,
%MATLAB code to print a table between stormdatavector and intensity.
%function file.
function tableprint(stormdatavector, intensity)
for i = 1:length(stormdatavector)
fprintf('%20.1f\t%20.1f\t%20.1f|t%20f\n', stormdatavector(i).locationcode, stormdatavector(i).rainfallamount, stormdatavector(i).stormduration, intensity(i))
end
end
%end of function file
%The function file should be placed in the same folder.
The function file is,
%MATLAB code to calculate the average intensity.
%function file.
function avgintensity(intensity)
intensitysum = 0;
for i = 1:length(intensity)
intensitysum = intensitysum + intensity(i);
end
avgintensity = intensitysum/length(intensity);
fprintf('Average intensity of storm is %f\n', avgintensity)
end
%end of function file
%The function file should be placed in the same folder.
The function file is,
%MATLAB code to find the information about mostintensestorm.
%function file.
function mostintensestorm(stormvector, intensity)
for i = 1:length(intensity)
for j = i + 1:length(intensity)
if intensity(i)>intensity(j)
temp = intensity(i);
intensity(i) = intensity (j);
intensity(j) = temp;
end
end
end
fprintf('the information of most intense storm is:%f\n', intensity(length(intensity)))
tempindex = index(stormvector, intensity);
fprintf('the index of most intense storm is:%d\n', tempindex);
fprintf('%20s|t%20s\t%20s\t%20s\n','location code','rainfall amount','storm duration','intensities')
fprintf('%20.1f\t%20.1f\t%20.1f\t%20f\n', stormvector(tempindex).locationcode, stormvector(tempindex).rainfallamount, stormvector(tempindex).stormduration, intensity(length(intensity)))
end
function index = index(stormvector, intensity)
for i = 1:length(stormvector)
if intensity(length(intensity)) ==stormvector(i).rainfallamount/stormvector(i).stormduration
index = i;
break;
end
end
end
%end of function file
%The function file should be placed in the same folder.
The function file is,
%MATLAB code to find the output.
%function file.
fprintf('%20s\t%20s\t%20s\t%20s\n','location code','rainfall amount','storm duration','intensities')
for i = 1:size(stormdata, 1)
for j = 1:length(stormdata(i))
stormvector(i) = struct('locationcode', stormdata(i, j),'rainfallamount', stormdata(i, j+1),'stormduration', stormdata(i, j+2));
intensity(i) = stormvector(i).rainfallamount/stormvector(i).stormduration;
end
end
tableprint(stormvector, intensity)
avgintensity(intensity)
mostintensestorm(stormvector, intensity)
%end of function file
%The function file should be placed in the same folder.
Explanation of Solution
The output is,
The average intensity is,
The location code is,
The rainfall amount is,
MATLAB Code:
clc
clear all
close all
%MATLAB code to load the data and create a data structure file.
%structure file.
stormdata = [321 2.4 1.5]
save stormdata.dat stormdata -ascii
stormdata = [111 3.3 12.1]
save stormdata.dat stormdata -ascii
clear
load stormdata.dat
%end of structure file
%The file should be placed in the same folder
output;
%The function file should be placed in the same folder
%MATLAB code to print a table between stormdatavector and intensity.
%function file.
function tableprint(stormdatavector, intensity)
for i = 1:length(stormdatavector)
fprintf('%20.1f\t%20.1f\t%20.1f|t%20f\n', stormdatavector(i).locationcode, stormdatavector(i).rainfallamount, stormdatavector(i).stormduration, intensity(i))
end
end
%end of function file
%The function file should be placed in the same folder.
%MATLAB code to calculate the average intensity.
%function file.
function avgintensity(intensity)
intensitysum = 0;
for i = 1:length(intensity)
intensitysum = intensitysum + intensity(i);
end
avgintensity = intensitysum/length(intensity);
fprintf('Average intensity of storm is %f\n', avgintensity)
end
%end of function file
%The function file should be placed in the same folder.
%MATLAB code to find the information about mostintensestorm.
%function file.
function mostintensestorm(stormvector, intensity)
for i = 1:length(intensity)
for j = i + 1:length(intensity)
if intensity(i)>intensity(j)
temp = intensity(i);
intensity(i) = intensity (j);
intensity(j) = temp;
end
end
end
fprintf('the information of most intense storm is:%f\n', intensity(length(intensity)))
tempindex = index(stormvector, intensity);
fprintf('the index of most intense storm is:%d\n', tempindex);
fprintf('%20s|t%20s\t%20s\t%20s\n','location code','rainfall amount','storm duration','intensities')
fprintf('%20.1f\t%20.1f\t%20.1f\t%20f\n', stormvector(tempindex).locationcode, stormvector(tempindex).rainfallamount, stormvector(tempindex).stormduration, intensity(length(intensity)))
end
function index = index(stormvector, intensity)
for i = 1:length(stormvector)
if intensity(length(intensity)) ==stormvector(i).rainfallamount/stormvector(i).stormduration
index = i;
break;
end
end
end
%end of function file
%The function file should be placed in the same folder.
%MATLAB code to find the output.
%function file.
fprintf('%20s\t%20s\t%20s\t%20s\n','location code','rainfall amount','storm duration','intensities')
for i = 1:size(stormdata, 1)
for j = 1:length(stormdata(i))
stormvector(i) = struct('locationcode', stormdata(i, j),'rainfallamount', stormdata(i, j+1),'stormduration', stormdata(i, j+2));
intensity(i) = stormvector(i).rainfallamount/stormvector(i).stormduration;
end
end
tableprint(stormvector, intensity)
avgintensity(intensity)
mostintensestorm(stormvector, intensity)
%end of function file
%The function file should be placed in the same folder.
Save the MATLAB script with name, chapter8_54793_8_27E.m and function files with names tableprint.m, avgintensity.m, mostintensestorm.m and output.m in the current folder. Execute the functions by typing the functions name at the command window to generate output.
Result:
The result is,
Therefore, the result is stated above.
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Chapter 8 Solutions
Matlab, Fourth Edition: A Practical Introduction to Programming and Problem Solving
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