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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 50])
rm =
8 19 43 25
35 44 30 45
bar(rm)
gives the plot as shown in the figure.
Note that the MATLAB groups altogether the values in the first row and then in the next row. It cycles through colors to differentiate the bars. The 'stack' option will stack instead of grouping the values; therefore the y value presented by the top of the bar is the addition of the values from that row as shown in fgure.
bar(rm,'stack')
Plot types: Besides plot and bar, there are another plot types like stem plots, histograms, stem plots, area plots and pie charts, and also other functions which customize the
Illustration of Logical vectors: Calling the function appears to return similar vector as simply vec > 5, and summing the result still works to determine how many elements wer
Print an imaginary number: To print an imaginary number, the function disp will show both parts automatically: >> disp(z1) 4.0000 + 2.0000i The function fprint
Example of Symbolic Expression When there is more than one variable, the MATLAB selects which to solve for. In the illustration below, the equation ax 2 + bx = 0 is solved. Th
5 p2+8p+15, 3 p2-3p-18, 12 p2-p-30
If I have a vector representing the packed storage form of a symmetric matrix, how do I perform a cholesky factorisation on that?
Writing to Files: There are many lower level functions which can write to files. We will focus on the fprintf function that can be used to write a file and also to append to a
m=2/3 b=4/5
Function xlsread - file function: The function xlsread will read from the spreadsheet file. For illustration, to read from file just generated: >> ssnums = xlsread('ranexc
Dimensions - matrix: The size and length functions in the MATLAB are used to find array dimensions. Length function returns the number of elements in the vector. The size func
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