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Undefined function 'tr' for input arguments of type 'double
The error is pretty self-explanatory, you are missing the function 'tr'. The function needs to be on your path (if it exists), o...

11年以上前 | 0

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Convert variable-width text file numbers to UINT8 table?
It's not very elegant, and it's not very efficient - so enjoy: nRaw = {'130 216 165 154 233 210 209 129' ' 63 ...

11年以上前 | 0

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The data is not correctly written with CSVWRITE, after 100000 rows
You could use fprintf instead. fid = fopen('test.csv','w'); fprintf(fid,'%0.2f\n', [0:0.01:1100]);

11年以上前 | 0

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Out of memory issue
For large CSV files you are less likely to run into memory issues if you read it line by line, for example: nFile = 'file.c...

11年以上前 | 0

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S-function dimension matching problem with lots of "Terminator" blocks
_"we all know that in S-function block, the input dimension must be SAME as output dimension"_ I'm really not sure where you ...

12年以上前 | 0

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when i run the below code i get an error picture1 does not exist..where should i save the image to get the results
From the MATLAB help relating to imread: _If the file is not in the current directory or in a directory in the MATLAB path, s...

12年以上前 | 0

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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 = ...

12年以上前

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Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

12年以上前

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Function 'ss' implicitly resolved in the MATLAB workspace. Implicit evaluation in MATLAB is not supported. Please declare this function extrinsic using eml.extrinsic('ss'), or call it using feval.
What this error message is saying is that in order to use the state space function (ss) Simulink has to call the MATLAB workspac...

12年以上前 | 1

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Axis dimensions in points
Here is an example of what I think you want to do: plot(1:10,1:10); h = gca; set(h, 'Units', 'Points'); nPos = get...

13年弱前 | 0

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Error when using the same program on an other computer
The 'parfor' functionality is part of the Parallel Processing Toolbox. I would assume that second computer doesn't have this too...

13年弱前 | 0

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"plus/minus" sign operator
Not exactly elegant, but it works: A = [1 2 3]; B = (dec2bin(0:2^length(A)-1) - '0'); C = sum(B .* repmat(A, 2^length...

13年弱前 | 0

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Dos command gives error
If you want to send commands to an executable you need to modify the call slightly. Try this: dos('"C:\Program Files\Or...

13年弱前 | 1

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what does this instruction means?
It means sfdr will take on the maximum value contained in the array ptot between element number nper+4 and element number N/2. ...

13年弱前 | 0

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How can i search for a specific Constant Value?
This will search through your Simulink model for any constant containing the value of '8'. However, when you retrieve the 'Value...

13年以上前 | 0

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Given matrices XX and YY of sizes 3X3, how can I generate the following matrix: [XX(1,1) YY(1,1); XX(1,2) YY(1,2)... ?
or: XX = magic(3); YY = eye(3); XX_trans = transpose(XX); YY_trans = transpose(YY); out = [XX_trans(:) ...

13年以上前 | 0

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Given matrices XX and YY of sizes 3X3, how can I generate the following matrix: [XX(1,1) YY(1,1); XX(1,2) YY(1,2)... ?
This is one way of doing it - expanding on my answer to your previous question: XX = magic(3); YY = eye(3); out =...

13年以上前 | 0

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unwrap the angle code
Going from a range of -360 to 360 degrees to 0 to 360 degrees is usually called wrapping the angle, not unwrapping. This anony...

13年以上前 | 0

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removing a loop from a script
Simple: d = 1+(20-1).*rand(365,5); bthD = 1:5; kd = 1+(2-1).*rand(365,1); newD = d.*exp(-kd*bthD);

13年以上前 | 0

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How can I generate the matrix [1 1; 1 2; 1 3 ; 2 1; 2 2; 2 3; 3 1 ; 3 2 ; 3 3] without loops?
I have no idea what your data is, but to generate the matrix in the question try: out = unique(nchoosek([1:3, 1:3], 2), 'ro...

13年以上前 | 0

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remove rows in cell if a column is equal to a number
X = {'B737' 'DAL1240' [10] 'MD88' 'DAL1542' [ 9] 'B747' 'DAL1284' [ 9] 'B737' 'DAL15...

13年以上前 | 1

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How can I change fileID name in a for loop?
<http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F>

13年以上前 | 1

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Finding the numbers of a vector with the same length?
rep=diff(find(diff([-Inf x Inf]))); val=x(cumsum(rep)); out = hist(rep(val == 1), max(rep));

13年以上前 | 0

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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.

13年以上前

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Why the ''break'' function does not work
Are you putting 'clear all' at the beginning of your scripts by any chance? This will remove the breakpoints.

13年以上前 | 1

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Word Counting and Indexing
You are given a list of strings, each being a list of words divided by spaces. Break the strings into words, then return a maste...

13年以上前

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how to getting data from URL
weatherData = urlread('http://weather.yahooapis.com/forecastrss?w=551801&u=c'); You will however have to parse the RSS feed...

13年以上前 | 0

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Compound Interest with monthly Contributions, Unable to vectorize.
You don't even need to vectorise, just calculate the answer directly. The answer below is slightly lower than your answer. But i...

13年以上前 | 0

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Error with silent install
You left the file installation key section blank. You therefore need to add you key and uncomment the line (by removing the # sy...

13年以上前 | 0

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Simulation of speed control of a stepper motor using phase locked loop
There are plenty of tutorials for this already, just look for those related to velocity feedback control: <http://www.mathwor...

13年以上前 | 0