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Accept 20 answers given by other contributors
Awarded to C Zeng on 20 Jul 2017
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Question
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 ...
plus de 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 9 ans il y a | 3 réponses | 0
3
réponsesQuestion
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...
plus de 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
environ 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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: ...
plus de 11 ans il y a | 1 réponse | 0
0
réponseQuestion
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)...
plus de 11 ans il y a | 1 réponse | 0
1
réponseAbout changing the size of array
This may be helpful: http://www.mathworks.com/matlabcentral/fileexchange/28922-list-queue-stack
plus de 11 ans il y a | 0
| A accepté
Question
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),...
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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. ...
plus de 11 ans il y a | 3 réponses | 0
3
réponsesQuestion
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...
plus de 11 ans il y a | 1 réponse | 0
0
réponseQuestion
compare loops and matrix computation.
Hi, all, I recently found that Matlab executes matrix/vector computation pretty fast than scalar computation with loops. For ...
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
plus de 11 ans il y a | 2 réponses | 0
2
réponsesQuestion
About Kernel Density Estimator
Hi, I used kde for estimate a continuous cdf from discrete distribution.(http://www.mathworks.com/matlabcentral/fileexchange/140...
plus de 11 ans il y a | 1 réponse | 0
0
réponseQuestion
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 '...
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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 "...
plus de 11 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
plus de 11 ans il y a | 3 réponses | 0
3
réponsesQuestion
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...
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 11 ans il y a | 1 réponse | 1
1
réponseQuestion
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...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
presque 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
presque 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
presque 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
environ 12 ans il y a | 1 réponse | 0
1
réponse
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