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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...

10 years 前 | 0

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已回答
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 ...

10 years 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]);

10 years 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...

10 years 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 ...

11 years 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...

11 years 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 = ...

11 years 前

已解决

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 = ...

11 years 前

已回答
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...

11 years 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...

11 years 前 | 0

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已回答
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...

11 years 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...

11 years 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...

11 years 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. ...

11 years 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...

12 years 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(:) ...

12 years 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 =...

12 years 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...

12 years 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);

12 years 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...

12 years 前 | 0

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

12 years 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>

12 years 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));

12 years 前 | 0

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已解决

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.

12 years 前

已回答
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.

12 years 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...

12 years 前

已回答
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...

12 years 前 | 0

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已回答
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...

12 years 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...

12 years 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...

12 years 前 | 0