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Three-Dimensional Plots:
The MATLAB has many functions which will display three-dimensional plots. Most of these functions have similar name as corresponding two-dimensional plot function with a 3 at the end. For illustration, the three-dimensional line plot function is known plot3. The other functions involve bar3, pie3, and stem3.
The Vectors presenting x, y, & z coordinates are passed to the plot3 & stem3 functions. Such functions display the points in three-dimensional space.
By clicking on the rotate 3D icon and then in the plot permits the user to rotate the view to see the plot from various angles. Using the grid function also makes it easier to visualize, as shown in figure.
Figure: Three-dimensional plot with a grid.
>> x = 1:5;
>> y = [0 -2 4 11 3];
>> z = 2:2:10;
>> plot3(x,y,z,'k*')
>> grid
Error-checking for integers: illustrations of running this script as shown below: >> readoneint Enter an integer: 9.5 Invalid! Enter an integer: 3.6 Invalid
Built-in functions for Complex numbers: We know that in MATLAB both i and j are built-in functions which return √-1 (therefore, they can be thought of as built-in constants).
fprintf function - File function: The fprintf function really returns the number of bytes which was written to the file, therefore if you do not want to see that number, suppr
Illustration of Standard Deviation The less spread out the numbers are, therefore smaller the standard deviation will be, as it is a way of determining the spread of the data.
Common form of the switch statement: The common form of the switch statement is as shown below: switch switch_expression case caseexp1 action1 case cas
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Function fopen - file function: The permission string in the call to the fopen function identifies that the file is opened for writing to it. Just as when reading from a file,
Strcat function - Concatenation : The strcat function, though, will eliminate the trailing blanks from strings before concatenating. Note that in these illustrations, the trail
Example of Minimum and Maximum Value For matrices, the functions min and max operate column wise by the default: >> mat = randint(2,4,[1 20]) mat = 9 10 1
Types of User-defined Functions: We know how to write a user-defined function, stored in an M-file, which computes and returns one value. This is merely one type of the functi
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