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Accept 20 answers given by other contributors
Awarded to C Zeng on 20 Jul 2017
Feeds
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 ...
9 years ago | 1 answer | 0
1
answerQuestion
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 years ago | 1 answer | 0
1
answerQuestion
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 years ago | 3 answers | 0
3
answersQuestion
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 years ago | 1 answer | 0
1
answerQuestion
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 ...
11 years ago | 1 answer | 0
1
answerQuestion
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 years ago | 0 answers | 0
0
answersQuestion
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)...
11 years ago | 1 answer | 0
1
answerAbout changing the size of array
This may be helpful: http://www.mathworks.com/matlabcentral/fileexchange/28922-list-queue-stack
11 years ago | 0
| accepted
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),...
11 years ago | 1 answer | 0
1
answerQuestion
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...
11 years ago | 1 answer | 0
1
answerQuestion
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. ...
11 years ago | 3 answers | 0
3
answersQuestion
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...
11 years ago | 0 answers | 0
0
answersQuestion
compare loops and matrix computation.
Hi, all, I recently found that Matlab executes matrix/vector computation pretty fast than scalar computation with loops. For ...
11 years ago | 1 answer | 0
1
answerQuestion
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...
11 years ago | 1 answer | 0
1
answerQuestion
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 ...
11 years ago | 2 answers | 0
2
answersQuestion
About Kernel Density Estimator
Hi, I used kde for estimate a continuous cdf from discrete distribution.(http://www.mathworks.com/matlabcentral/fileexchange/140...
11 years ago | 0 answers | 0
0
answersQuestion
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 years ago | 1 answer | 0
1
answerQuestion
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 years ago | 1 answer | 0
1
answerQuestion
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 years ago | 1 answer | 0
1
answerQuestion
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 years ago | 2 answers | 0
2
answersQuestion
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 years ago | 3 answers | 0
3
answersQuestion
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 years ago | 1 answer | 0
1
answerQuestion
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 years ago | 1 answer | 1
1
answerQuestion
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...
12 years ago | 1 answer | 0
1
answerQuestion
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...
12 years ago | 1 answer | 0
1
answerQuestion
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 ...
12 years ago | 2 answers | 0
2
answersQuestion
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...
12 years ago | 1 answer | 0
1
answerQuestion
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...
12 years ago | 2 answers | 0
2
answersQuestion
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...
12 years ago | 2 answers | 0
2
answersQuestion
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...
12 years ago | 1 answer | 0
1
answer
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