Exam3 Review

Do you plan on taking the final exam?

• yes

• most likely yes

• most likely no

• no

The following line is run in matlab: a = dir()

What is contained in the variable a?

• a cell array containing all filenames from the current directory

• a structure with fieldnames: name, folder, date, bytes, isdir, datenum

• a cell array with headers: name, folder, date, bytes, isdir, datenum

• nothing, it just opens all files in the directory

how would you loop through a structure?

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A structure contains a field called tvShow containing strings and ratings containing doubles. A loop is created to make a cell array of the tvShows that have ratings higher than 3. Fill in the missing line of code:

how do you read in an image?

• fopen()

• read()

• imread()

• imopen()

when you use the rgb2gray function to grayscale and image, what do you get in return?

• 3D array of grayscaled image

• 2D array of grayscaled image

• 1D array of grayscaled image

• a new file containing the grayscaled image

how do you concatenate three arrays on top of each other to create an image?

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how do you flip an image horizontally (over the y axis)?

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how would you flip an image vertically (over the x axis)?

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To loop through every line in a file what would be the terminating condition? (enter answer with no spaces)