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Solved
Add a block to a model
Produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/add-block-eqn.png>> In this case, the slope of...
mer än 8 år ago
Solved
Add offset to a signal
Produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/add-offset-eqn.png>> You should see a downward...
mer än 8 år ago
Solved
Produce a cosine wave
Produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/cosine-eqn.png>>
mer än 8 år ago
Solved
Connect blocks in a model
Connect the blocks in the model to produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/connect-blocks...
mer än 8 år ago
Solved
Detect a number and replace with two NaN's
Write code which replaces the number 1 with two NaNs. Example X = [ 1 2 NaN 4 1 3 7 NaN 1 4 NaN 2] ...
mer än 9 år ago
Solved
Function Iterator
Given a handle fh to a function which takes a scalar input and returns a scalar output and an integer n >= 1, return a handle f...
mer än 9 år ago
output variable size matrix, while its specified type is something else.
MATLAB Function Block is having difficulty inferring the size of x. Replacing x=value(ind); with x=value(ind(1)...
mer än 9 år ago | 2
| accepted
Problem with findpeaks - error message of 'undefined variable "coder"'
This looks like it might be a path issue. Try: restore defaultpath savepath rehash toolboxcache and restart MATLAB...
mer än 9 år ago | 1
| accepted
Invalid MEX-file error in R2014a(32-bit)
Mex files can be version dependent. Did you generate the MEX file using MATLAB R2014a?
mer än 9 år ago | 0
See Generated code from Realtime workshop for Arduino
Generated C code can be reviewed by enabling the Code Generation report. In the Configuration Parameters dialog box select R...
mer än 9 år ago | 0
global variable inside a function
There is no need to use a global. You can pass t in as an argument to your ode function. <http://www.mathworks.com/help/matlab/r...
mer än 9 år ago | 2
Why does not overloading using assignin work?
Patrik, The MATLAB Answers article <http://www.mathworks.com/matlabcentral/answers/102537-why-do-i-receive-an-error-when-i-...
mer än 9 år ago | 1
| accepted
Is there a way, when reading a file to insert text between a deliminator.
Use strsplit with "Collapse Delimiters" disabled. inputstr = '[1,1,,1;1,1,,1;1,1,,1]'; C = strsplit( inputstr , ',' , 'C...
mer än 9 år ago | 1
convert character array to cell
You can use strsplit to split the string into cells. For your output, you can use the line feed character char(10) as the delimi...
mer än 9 år ago | 0
| accepted
Is there an efficient method to remove leading underscores from a cell array of strings?
b = regexprep(a,'^_','','emptymatch')
mer än 9 år ago | 1
Working with Cell Arrays
You can use cellfun with an anonymous function to get rid of the for loop. channel1 = { imread('cameraman.tif'),... ...
nästan 10 år ago | 0
how to generate a matrix from another matrix
You can use <http://www.mathworks.com/help/matlab/ref/rdivide.html rdivide> to do this. "rdivide" will expand the scalar "0.001"...
nästan 10 år ago | 0
Scatter plot does not display point 0,0 when double precision
This looks like an issue with the Painters renderer. Switching to OpenGL resolves the issue on my end. x = [0 0; 12 0; 6 6]...
ungefär 10 år ago | 1
Solved
Pattern matching
Given a matrix, m-by-n, find all the rows that have the same "increase, decrease, or stay same" pattern going across the columns...
ungefär 10 år ago
Solved
Create a row array using double colon operator
Create a row array from 9 to 1, using the double colon operator.
ungefär 10 år ago
Solved
Factorize THIS, buddy
List the prime factors for the input number, in decreasing order. List each factor only once, even if the factorization includes...
ungefär 10 år ago
Solved
Trimming Spaces
Given a string, remove all leading and trailing spaces (where space is defined as ASCII 32). Input a = ' singular value deco...
ungefär 10 år ago
Solved
Find the sum of the elements in the "second" diagonal
Find the sum of the elements in the diagonal that starts at the top-right corner and ends at the bottom-left corner.
ungefär 10 år ago
Solved
Fahrenheit to Celsius using multiple statements
Given a Fahrenheit value F, convert to a Celsius value C. While the equation is C = 5/9 * (F - 32), as an exercise use two state...
ungefär 10 år ago
Solved
Tell me the slope
Tell me the slope, given a vector with horizontal run first and vertical rise next. Example input: x = [10 2];
ungefär 10 år ago
Solved
Which doors are open?
There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...
ungefär 10 år ago
Solved
Return a list sorted by number of occurrences
Given a vector x, return a vector y of the unique values in x sorted by the number of occurrences in x. Ties are resolved by a ...
ungefär 10 år ago
Solved
Reverse Run-Length Encoder
Given a "counting sequence" vector x, construct the original sequence y. A counting sequence is formed by "counting" the entrie...
ungefär 10 år ago
Solved
Making change
Given an amount of currency, return a vector of this form: [100 50 20 10 5 2 1 0.5 0.25 0.1 0.05 0.01] Example: Input a = ...
ungefär 10 år ago
Solved
Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.
ungefär 10 år ago