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C Zeng


2012 年からアクティブ

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質問


How to use find function to find input of 'cell' type?
Hello, I have 'raw' as an array of all cells read from excel (number or non-number). I would like to find the row numbers where ...

9年以上 前 | 1 件の回答 | 0

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質問


Compare two cell in Matlab.
Hello, I have a question that, if A=[ 'ddd', 'aaa']; B=['ddd']; I want to return an array that compare whether A's cell is e...

9年以上 前 | 1 件の回答 | 0

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質問


Can Matlab read the most recent made file in the default folder?
Hello, just want to know if Matlab can import the file that is most recent made based on their modified date and time? I have...

9年以上 前 | 3 件の回答 | 0

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質問


Solving a nonlinear programming using MATLAB?
Hello, experts, just wondering if MATLAB can solve a non-linear programming efficiently. The decision variable is a vector of N...

10年弱 前 | 1 件の回答 | 0

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質問


About parallel computing toolbox
Hello, everyone, I have a code of large scale problem, and it contains many for loops, and all loops are independent. I want ...

10年以上 前 | 1 件の回答 | 0

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質問


Read or Write an Excel file in Matlab.
I used a lot of read and write functions in Matlab, xlsread and xlswrite. However when I run it pops up a lot of windows that: ...

11年弱 前 | 0 件の回答 | 0

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質問


Output result in a format.
Hello, I would like to let Matlab output the result, the result is several rows, on each row there is name(string), time(string)...

約11年 前 | 1 件の回答 | 0

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回答済み
About changing the size of array
This may be helpful: http://www.mathworks.com/matlabcentral/fileexchange/28922-list-queue-stack

約11年 前 | 0

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質問


About changing the size of array
Hi, it is a follow up of a previous question, but I have not successfully solved it. Assume I have a large matrix(many rows),...

約11年 前 | 1 件の回答 | 0

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質問


About memory manipulation/speed up program
Hi, All, I am doing a large scale computation problem, and I have several variables, which is large scale (>100MB). I was tol...

約11年 前 | 1 件の回答 | 0

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質問


Question about assigning value in a matrix.
Hi, all, again, I want to do the work quickly: I have a large matrix A, and I want to assign value in some entry in each row. ...

約11年 前 | 3 件の回答 | 0

3

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質問


How to optimize the following algorithm?
I have a large matrix-M, and the rows have been sorted based on the value on some entry. Next I want to identify all rows that c...

約11年 前 | 0 件の回答 | 0

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質問


compare loops and matrix computation.
Hi, all, I recently found that Matlab executes matrix/vector computation pretty fast than scalar computation with loops. For ...

約11年 前 | 1 件の回答 | 0

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質問


How to do sort rows more efficiently.
Hi, all! I plan to sort rows to an numerical matrix. First sort them in descending order based on first column, then if there...

約11年 前 | 1 件の回答 | 0

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質問


Define an array with variable
Hello, I wonder how can I define an array with a variable, for example, x_i=an array, where i changes. I do not think Matlab ...

約11年 前 | 2 件の回答 | 0

2

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質問


About Kernel Density Estimator
Hi, I used kde for estimate a continuous cdf from discrete distribution.(http://www.mathworks.com/matlabcentral/fileexchange/140...

約11年 前 | 0 件の回答 | 0

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質問


save a large data to mat file
Hi, I want to save a large data 3^14*1000 double precision to mat file, however, matlab reports error as: Warning: Variable '...

11年以上 前 | 1 件の回答 | 0

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質問


About unique command problem
Hi, I used unique(A,'rows') to find unique rows of matrix A, however, it has a problem that after picking unique rows, it wil...

11年以上 前 | 1 件の回答 | 0

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質問


About vector comparasion question.
Hi, I know I have asked the similar question, I want to write a if statement that compare vectors, like a, b is 3 dimensional ve...

11年以上 前 | 1 件の回答 | 0

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質問


How could MATLAB store large scale of data.
Hi, All, I have to use a dataset as large as ones(3^N1,3^N2,10^3), where N1 and N2 can be 7~14. However, matlab will report "...

11年以上 前 | 2 件の回答 | 0

2

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質問


About isinteger command(confusion)
Hi, by the command of isinteger I can check if it is an integer, however, when defined at first, Matlab assume it is double prec...

11年以上 前 | 3 件の回答 | 0

3

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質問


Is there a command of "not less than or equal to " to vectors?
Hi, want to know if there is a command can compare if two vectors a is not <=b? Now I use while sum(le(a,b))~=N while N is the...

11年以上 前 | 1 件の回答 | 0

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質問


Is there a dataset both matlab and VC++ can use?
Hello, want to program to store a result to file, which dataset can both Matlab and C++ read? I know Matlab can save it to .m...

11年以上 前 | 1 件の回答 | 1

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質問


about Find difference set.
Hi, I have two matrices(same number of columns), M1 and M2. M2 is a set of subset of rows in M1. Is there a function in matlab t...

11年以上 前 | 1 件の回答 | 0

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質問


Can matlab have command that invalid a lot of command lines together?
Notice that C++ have that by /*...*/ Matlab has % to invalid the line, but does Matlab have command that make multiple lines in...

11年以上 前 | 1 件の回答 | 0

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質問


On define a large scale arrays
Hi, all, I want to define and store a large scale arrays, like ones(3^N,1000,N) and N can be 15. However, matlab says it is out ...

11年以上 前 | 2 件の回答 | 0

2

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質問


About running time in matrix.
Hi, I am running a small program, that first sortrows of a matrix by the some column and then compare the order with another col...

11年以上 前 | 1 件の回答 | 0

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質問


How to make combinations of given condition?
Hi, all, For example, if I want to make all combination of 5-dim vectors have only 2 two's, other entries are all 0. Is there...

11年以上 前 | 2 件の回答 | 0

2

回答

質問


How to build the search fast?
Hi I have a database with cost assigned to over 500 zipcodes, that is, one zipcode has a corresponding cost. I want to build a f...

11年以上 前 | 2 件の回答 | 0

2

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質問


Problem about proximity in matlab
Hi, all, I defined an array like S=ones(N,x,'uint32'). And I give values to all of them. However I find out the maximum value...

11年以上 前 | 1 件の回答 | 0

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