Question

time of low tide to the d window (40 average tide level, section and put Create a new 'm-file called exaal.a. Use a %% line to start your header Exami and your name on the first line. Use % lines for Author: Course Exam: Date and Description: Then start a new section with %%. Asyou build your oode: Make sure to break up the code into kgical sections using X%. Include comments using %. You should have about one line of % comments fe every line of code. Load the data from the esv data sheet (tide level data.esv) posted in D2L into MATLAB asing your script (not using the import wizard or using copy and paste). This csv file contains the tide level (water level) in meters over a 24 hour period in Vancouver, WA on November 1st, 2017 . Create two new variables called tine.in.hrs and vater level. Where tine.in hrs is the first column of the cav file and vater.level is the second column of the .cev file. Plot the Water Level vs. Time. Ensure you use the proper variable on the proper axis. Make the line on your plot blue, dashed and thick (LineWidth of 2). Include axis labels. The units of water level is meters, units of time is hours. Include a title (Tide Level in Vancouver, WA on Nov 1, 2017) and a legend on your plot. Limit the x-axis to go from 0 hours to 24 hours . Calculate the average vater.level. . Find the water level at low tide (minimum vater level). . Find the time that corresponds to low tide (the minimum water vater level). Do this programmatically (not by manually searching). You are answering the question "When is low tide? e Upload yur hml-le to the Exam 1 sploads folder on D21 Upload the full resolution n image file (your Waber Level . Time curve) to the Exam 1 splods folder on D2L Ere Bring this sheet and your sheet of motes up to your instructor Your plot should look something like the plot below

Answer 1

%% Exam1 - Name:xxxxxxxx
% Author:
% Course:
% Exam:
% Date:
% Description:
%% Loading Data
% Loading the data from the .csv datasheet
Data=xlsread('Tide_level_data.csv');

% Creating two variables for time (in hrs) and water level (in mts)
% time is in the first column of the csv file
time_in_hrs=Data(:,1);  
% water level is in the first column of the csv file
water_level=Data(:,2);   
%% Plotting Data
% plotting water level vs time
figure; % creating a figure to plot the waveform
% plotting the line with blue, dashed with a thickness of 2
plot(time_in_hrs,water_level,'b-','linewidth',2);
% axis properties like grid, labels, title and legend
grid on; grid minor; % using a minor grid in the plot
xlabel('Time \it(hrs)'); % defining xlabel
ylabel('water level \it(mts)'); % defining ylabel
% defining title for the plot
title('Tide Level in Vancouver, WA on Nov 1, 2017');
legend('Water level vs Time'); % defining legend
xlim([0 24]); % limits the x-axis from 0 to 24 hours
%% statistics
% Calulating the average water level
avg_water_level=mean(water_level);
% Calculating the minimum water level and the corresponding time
[min_water_level,min_Loc_time]=min(water_level);
min_time=time_in_hrs(min_Loc_time);
% answering the question 'when is low tide'
fprintf('Low tide is occured at %d hrs\n',min_time);