>> script1

Your variables are:




 leaving m-file function testit1 

output =

     5     8     5


dummy =

     5
     8
     5

 leaving script1 - did you get the dimensions and shapes correct?

              Name        Size       Elements     Bytes    Density   Complex

             dummy       3 by 1             3        24       Full      No 
            output       1 by 3             3        24       Full      No 
                 x       1 by 5             5        40       Full      No 
                 y       1 by 8             8        64       Full      No 
                 z       1 by 5             5        40       Full      No 

Grand total is 24 elements using 192 bytes

>> type script1.m

% m-file script [script1.m] for practice midterm 1/cs205/fall 98
%
clear % empty the work space
who
%
x = 0:0.5:2;
y = -2:5;
z = 1:2:10;
% invoke the function, "testit1"
[output,dummy] = testit1 (x,y,z);
output
dummy
fprintf(' leaving script1 - did you get the dimensions and shapes correct?\n\n')
whos

>> type testit1

function [out1,out2] = testit1 (in1, in2, in3)
% m-file function devised for practice midterm 2 in cs 205/fall 96
% the file is available from the class home page
%     http://www.stewart.cs.sdsu.edu/cs205/
% and from the individual student's rohan account for this course
% so that you can practice with it to check your understanding of
% communications between MATLAB m-file scripts and m-file functions
%
n1 = length(in1); n2 = length(in2); n3 = length (in3); % ; suppressed output
%
out1 = [n1, n2, n3]; % first output parameter is a matrix of size 1 by 3
out2 = [n1; n2; n3]; % second output parameter is a matrix of size 3 by 1
fprintf ('\n leaving m-file function testit1 \n')

>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> script2


 finished with script 2 


Your variables are:

x         y         

>> 
>> type script2

% m-file script [script2.m] for practice midterm 1/cs205/fall 98
%
clear % empty the work space
x = -3:0.1:3;
y = rect(x); % a function to compute the "rectangle function"
plot (x,y), title(' Rectangle Function'), ...
xlabel ('x'), ylabel ('y'), grid
fprintf('\n\n finished with script 2 \n\n')
who

>> 
>> 
>> type rect

function r = rect (x)
% RECT   The rectangular function is defined to be 1
%        on [-0.5,0.5] and 0 elsewhere
%
% m-file function [rect.m] devised for practice midterm 1 in cs 205/spring 98
% the file is available from the class home page
%     http://www.stewart.cs.sdsu.edu/cs205/
% and from the individual student's rohan account for this course
% so that you can practice with it to check your understanding of
% communications between MATLAB m-file scripts and m-file functions
%
% initialize output matrix to be all zeros, same size as input
r = zeros(size(x)); 
%
set1 = find(abs(x) <= 0.5); % identify component of input vector in [-0.5,0.5]
r(set1) = ones(size(set1)); % for those component in [-0.5,0.5], set value 1

>> 
>> 
>> 
>> 
>> 
>> 
>> script3

Your variables are:




 leaving m-file function testit1 

output =

     1     1     4


dummy =

     1
     1
     4

 what were the dimensions of the constants? 


Your variables are:

dummy     output    

>> 
>> 
>> type script3

% m-file script [script3.m] for practice midterm 1/cs205/fall 98
%
% start with an empty workspace
clear
who
% invoke the function, "testit1" with constants as inputs
[output,dummy] = testit1 (1,0,[1,2,3,4]);
output
dummy
fprintf(' what were the dimensions of the constants? \n\n')
who

>> 
>> 
>> type testit1

function [out1,out2] = testit1 (in1, in2, in3)
% m-file function devised for practice midterm 2 in cs 205/fall 96
% the file is available from the class home page
%     http://www.stewart.cs.sdsu.edu/cs205/
% and from the individual student's rohan account for this course
% so that you can practice with it to check your understanding of
% communications between MATLAB m-file scripts and m-file functions
%
n1 = length(in1); n2 = length(in2); n3 = length (in3); % ; suppressed output
%
out1 = [n1, n2, n3]; % first output parameter is a matrix of size 1 by 3
out2 = [n1; n2; n3]; % second output parameter is a matrix of size 3 by 1
fprintf ('\n leaving m-file function testit1 \n')

>> 
>> 
>> script4

 leaving m-file function testit1 

output =

    16    19     1


dummy =

    16
    19
     1


s =

this is a string

this is a string
 

finished script 4 
              Name        Size       Elements     Bytes    Density   Complex

             dummy       3 by 1             3        24       Full      No 
            output       1 by 3             3        24       Full      No 
                 s       1 by 16           16       128       Full      No 

Grand total is 22 elements using 176 bytes

>> 
>> type script4

% m-file script [script4.m] for practice midterm 1/cs205/fall 98
%
clear % empty the workspace
s = 'this is a string';
% invoke the function, "testit1"
[output,dummy] = testit1 (s,' what is the length',0);
output
dummy
s
disp(s)
fprintf(' \n\nfinished script 4 \n')
whos

>> 
>> 
>> type testit1

function [out1,out2] = testit1 (in1, in2, in3)
% m-file function devised for practice midterm 2 in cs 205/fall 96
% the file is available from the class home page
%     http://www.stewart.cs.sdsu.edu/cs205/
% and from the individual student's rohan account for this course
% so that you can practice with it to check your understanding of
% communications between MATLAB m-file scripts and m-file functions
%
n1 = length(in1); n2 = length(in2); n3 = length (in3); % ; suppressed output
%
out1 = [n1, n2, n3]; % first output parameter is a matrix of size 1 by 3
out2 = [n1; n2; n3]; % second output parameter is a matrix of size 3 by 1
fprintf ('\n leaving m-file function testit1 \n')

>> exit

 3083 flops.