Question

1. Below you will find a table with hours of life of a cupper plate used in an industrial process. They are 45 data samples (they are just an array, but in this document, they are presented in three columns to save space) 63 59 75 78 70 64 75 93 90 70 98 92 85 90 83 95 89 92 92 90 82 81 89 80 79 46 85 79 59 79 96 49 69 98 65 Input the data as a vector or array a) By using array functions, implement a nice user interface (nice output comments and text in the command window) that provides results for i. Display the array positions where the hours of life is less than 50 ii Display the array values that are less than 50 ii. Display the array positions where the hours of life is greater than 90 iv. Display the array values that are greater than 90 v. Display how many elements are less than 50?, and how many are more than 90? b) Plot the data in an x-y chart, green line and using circles as a mark point. i. Label the axes and add a title to your graph. ii. Place a text in the minimum (MIN) and maximum (MAX) value

Using Matlab, only need part b to be done thank you.

Answer 1

Matlab Code

close all % creating the array lifeHours = [63,66,78,70,64,75,66,82,81,63,46,85,77,59,79, ... 59,75,79,85,94,90,83,88,89,80,79,79,99,96,49, ... 93,90,70,98,92,88,95,89,92,92,90,88,69,98,65]; % Part b plot(lifeHours, '-go', 'LineWidth', 1.3) title('Copper Plate Life Hours'' Plot') xlabel('Data Samples ->') ylabel('Hours of Life ->') % finding the minimum life hour min_val = min(lifeHours); % finding the respective x position in life hour array x1 = find(lifeHours == min_val); % finding the maximum life hour max_val = max(lifeHours); % getting the respective x position x2 = find(lifeHours == max_val); % preparing the text for minimum hour min_text = ['\leftarrow Least Life Hours = ', num2str(min_val)]; % preparing the text for max hour max_text = ['\rightarrow Max Life Hours = ', num2str(max_val)]; % putting the text text(x1, min_val, min_text) text(x2, max_val, max_text)

OUTPUT

Copper Plate Life Hours' Plot 100 Max Life Hours = 99 90 80 70 50 Least Life Hours-46 40 10 15 20 25 30 35 45 Data Samples->