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Answered: - Need a matlab script for project 2. I can't figure out how to
Need a matlab script for project 2. I can't figure out how to properly code this.
Sottile ? Spring 2016
CMPSC 200 Programming for Engineers with MATLAB
Programming Style Convention
Many different organizations maintain standards for code documentation ? the purpose of using
a style convention in this class is twofold: 1) to get you use to documenting your code to a given
standard, and 2) to facilitate grading a large number of programs.
Note: The easiest way to line up lines is to tab over with the tab key.
Comments at the top of your program
Pick your favorite format between Option 1 and 2 (both are acceptable):
Option 1:
%
%
%
%
%
%
Programmer:
Section:
Lab/Project:
Date:
Description:
Your Name
1 (enter your correct section number)
1 (enter the correct type and number)
September 3, 2014 (update with correct date)
A description of what the program does; limit this to just
the highlights ? only a few sentences
Option 2:
%{
Programmer:
Section:
Lab/Project:
Date:
Description:
Your Name
1 (enter your correct section number)
1 (enter the correct type and number)
September 3, 2014 (update with correct date)
A description of what the program does; limit this to just
the highlights - only a few sentences.
%}
Variables and Constants
Each variable or constant should be allocated one per line, so don?t allocate multiple variables on
one line of code. When you declare a constant or a variable, include a comment with the variable
or constant?s units and what it represents; include empty braces for variables that are
dimensionless. For example:
g = 9.81;
mu_static = 0.5;
% [m/s^2] gravitational acceleration at sea level
% [ ] coefficient of static friction
Constants should be allocated at the top of a program, underneath the comments at the top of the
program and the clc and clear statements. Listing them together forms a ?data dictionary? of
constants that can be easily seen by the programmer and anyone that later has to view your code.
Sottile ? Spring 2016
Subplots
So that it is clear what commands belong to each subplot, indent the commands with the tab key.
subplot(1,2,1)
plot(w,x)
title('My title #1')
subplot(1,2,2)
plot(y,z)
title('My title #2')
Function Files
It is important for functions to know what the function does, what are its inputs, and what are its
outputs. Please format your function files like this:
%
%
%
%
Programmer:
Section:
Lab/Project:
Date:
Your Name
1 (enter your correct section number)
1 (enter the correct type and number)
September 3, 2014 (update with correct date)
function [ output_args ] = myfunction( input_args )
%
Inputs:
1st input ? comment as described in ?Variables and Constants?
%
2nd output ? comment same as above
%
Outputs:
1st output ? comment same as above
%
2nd output ? comment same as above
%
Processing: A description of what the function does; limit this to just
%
the highlights ? only a few sentences
(some calculations are performed underneath the comments, documented as usual)
end
Include as many inputs and outputs as you have, each on a separate line. The listed variables
output_args and input_args are the MATLAB defaults when you open a new function.
Change these so that they are your variable names (as appropriate).
Selection Structures
To increase readability, format your selection structures with indents. You may include
parenthesis for your conditions if you feel they make your code more readable. For example:
if something
calculation(s)
elseif something_else
calculation(s)
else
calculation(s)
end
Sottile ? Spring 2016
Similar formatting is requested for switches, for example:
switch x
case 1
calculation(s)
case 2
calculation(s)
otherwise
calculation(s)
end
Repetition Structures
To increase readability, please format your repetition structures with indents. You may wish to
include parenthesis for your while loop conditions if you feel they make your code more
readable. An example for for loops is:
for i = matrix
statment(s)
end
Similarly, for a while loop:
while condition
statement(s)
end
Nesting
If you have multiple selection structure or repetition structures nested within each other, please
continue indenting. Comment next to each end stating at least what statement selection or
repetition structure, though you may be more detailed than that if you wish. For example:
for i = 1:10
while condition
switch x
case 1
if y < 0
statement(s)
else
statement(s)
end % end if
case 2
if y < 0
statement(s)
end % end if
end % switch
end % while loop
end % for loop
Sottile ? Spring 2016
Comments and Style
Comment your code, particularly if you do anything ?clever.? What may be obvious to you now
may not be obvious to a colleague, or even to yourself a week later. Explain calculations where
appropriate; this could include equation numbers if you use them from a given document. Don?t
comment just for the sake of commenting. Comments shouldn?t just decode MATLAB syntax
into English. You may assume the reader is at least minimally proficient in the language.
Please make sure that your code and comments are free from spelling and grammar errors ? pay
particular attention to spelling variable names correctly. MATLAB will assume you are trying to
allocate a different variable if you don?t type a variable exactly the same each time (spelling,
capitalization, etc.).
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