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Labels and Prompts:
The script loads all the numbers from file into a row vector. It then splits the vector; it stores the initial element that is the experiment number in a variable exper_no, rest of the vector in a variable data (the rest being from the next element to the end). It then plots the data, by using sprintf to generate the title which includes the experiment number as shown in the figure.
The other way of completing this (in script or function) would be as shown:
fprintf('%s, Enter your id #: ',username);
id_no = input('');
Note that the calls to the sprintf and fprintf functions are similar except that the fprintf prints (therefore there is no requirement for a prompt in the input function) while the sprintf generates a string which can then be exhibited by the input function. In this situation by using sprintf it seems clearer than using the fprintf and then having an empty string for the prompt in input.
User input in the while loop: Here is an illustration of running this script: >> readonenum Enter a positive number: -5 Invalid! Enter a positive number: -2.2
Pie chart - plot functions: The MATLAB also has a function pie which will generate a pie chart. Calling the function with the form pie (vec) draws a pie chart, by using the pe
Illustration of Empty vectors: The Empty vectors can also be used to delete elements from the arrays. For illustration, to remove the third element from array, an empty vector
5 p2+8p+15, 3 p2-3p-18, 12 p2-p-30
Use of string variables: The Characters involve letters of the alphabet, punctuation marks, digits, white space, and control characters. The Control characters are characters
Applications of Customized Strings: Labels, Prompts, Arguments to Functions: The one of very useful application of this is to involve numbers in strings that are used to plot
bar and barh functions: For a matrix, the bar and barh functions will group altogether the values in each and every row. The illustration is as shown: rm = randint(2,4,[1
Illustration of Minimum and Maximum Value Both of these functions also return the index of the minimum or maximum value; when there is more than one occurrence, it returns the
Referring to and Modifying the Matrix Elements: To refer to matrix elements, the row and then the column indices are given in parentheses (always the row index initially and t
Function xlsread - file function: The function xlsread will read from the spreadsheet file. For illustration, to read from file just generated: >> ssnums = xlsread('ranexc
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