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Bob Nbob


338 total contributions since 2016

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Answered
I want to circular shift rows of ' ww ' this circular shift depend on the numbers of 'r' array in the order , when the r numbers is change the circular shift is change for the ww array rows .
If I am understanding r correctly, you want to move the respective rows from their current positions to that position plus r(i)....

3 days ago | 1

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Answered
Extract Variable/column with variable name from table
I believe you can get this as a return. T.Properties.VariableNames % T is the table variable Additionally, because you're putt...

6 days ago | 0

Answered
My code is generating this error " Index exceeds matrix dimensions" . Apparently it looks fine. Still can not figure out the problem.
dfdc1(i,j) = (L/M) - M*(log(1 - c1(i,j) - c2(i,j)) - log(c1(i,j)))/M; c1 and c2 are defined as single values (0.1 and 0.0001), ...

6 days ago | 0

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Question


Extracting data from ascii file using regexp
I have an ascii file which produces the following text. 1 $FLAG1 NP1=8.,NP2=1.,P2=2.36,P3=3000000., 2 P1=0.,4....

8 days ago | 0 answers | 0

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answers

Answered
Create variable from an excel entry
Hmm, I normally wouldn't recommend anybody do this, and others might still disagree, but I think eval will do what you're lookin...

9 days ago | 0

Answered
Removing nested for loops for quicker time
I'm shooting in the dark a bit on this one, but I think you can get rid of both loops. The only thing I'm not entirely sure abou...

11 days ago | 0

Answered
Array indexing, matrix indexing
Personally, I don't think the loops are necessary. It's not much cleaner looking than the loops, but I suspect it will run more ...

11 days ago | 0

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Answered
picking up data file in each iteration
The best way I know how to do this is by listing all of the files using dir, and then looping through the files. flist = dir('*...

12 days ago | 1

Answered
Forloop taking too long to execute in code
Some things that I have noticed. [Dim1, Dim2, Dim3] = size(blind(1).VMPData); fmap = zeros(175, 121, 139); Might be smart to ...

12 days ago | 0

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Answered
How do I add text to the top of a CSV file?
The best way I have found to do this is with a combination of fprintf and dlmwrite. While csvwrite is nice for writing out the d...

13 days ago | 0

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Answered
Can somebody explain me this answer?
a=[1 2; 3 4]; % Dictates a matrix, 'a,' and it values. Is a 2x2 matrix a(3*ones(2)) % Calls the elements of 'a' which are locat...

13 days ago | 1

Answered
Finding the maximum output value and corrosponding input for a function
I'm going to make some assumptions with this answer, but I will try to explain them. The first assumption is that you know how ...

13 days ago | 0

Answered
How do I create 2 separate matrices which are pair-matched to each other in the corresponding row from 2 original CSV files?
This is a first cut at how I would set up the loop and arguments. for i = 1:size(A,1) tmp = B(B(:,6)==A(i,6),:); C(i...

25 days ago | 0

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Question


Compare two meshes for difference in values
I feel like I should know how to do this, but apparently I don't have the patience to figure it out today. I have two 'mesh g...

1 month ago | 1 answer | 0

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answer

Answered
large excel data into multiple excel file using xlswrite ?
M.Prasanna kumar is definitely on the right track. The only suggestion I would make is not to create multiple new matrices, just...

1 month ago | 0

Answered
Compare row by row of two arrays and write in array, if there are matching values
I think intersect is a much better choice here than find. Because you are looking for specific row results I'm not sure how to ...

1 month ago | 0

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Answered
selecting columns with certain time period and placing in new array
In general, I would make an effort to extract the data using logic indexing. You can certainly convert the mdy into a datetime v...

1 month ago | 0

Answered
Name Structure in a for loop
I'm going to guess that this line is the incorrect one: name.(field_names(k,1))(count,1) = data_struct_sorted_unique.(field_nam...

1 month ago | 0

Answered
Empty index from loop
find(dates==i) This is not looking for the actual dates, because i is just an index integer, i.e. on the first loop you are loo...

1 month ago | 0

Answered
How to find and remove certain text from a text file
As I mentioned, the command would only work for one line at a time. You would need to loop it to get all the lines. fid = fopen...

1 month ago | 0

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Answered
With activeX server running Excel, access the cells syntax on range property
I used to do this by creating a variable ('range' for simplicity) that was defined with string concatenation. Because you want t...

2 months ago | 0

Answered
Operations using individual elements in a matrix?
The problem is because you are looking to index X(ii, jj) but you have defined the bounds of ii and jj as the number of elements...

2 months ago | 0

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Answered
.Selecting the data series for next loop
Is y a single value? I'm not entirely sure I know what you're asking for, but maybe something like this can work? y = randi(10...

2 months ago | 0

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Answered
Detect maximum value of multiple Excel-Files
The cleanest way that I can think of doing this is to just loop things. You may need to change the range you are looking to find...

2 months ago | 0

Solved


Find the nearest prime number
Happy 5th birthday, Cody! Since 5 is a prime number, let's have some fun looking for other prime numbers. Given a positive in...

2 months ago

Solved


Extra safe primes
Did you know that the number 5 is the first safe prime? A safe prime is a prime number that can be expressed as 2p+1, where p is...

2 months ago

Answered
Create an excel sheet from data stored in variable used in a for loop
From what you've posted, which is a bit vague, it seems like all you need to do is index your results and then use xlswrite to p...

2 months ago | 0

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Answered
Dot indexing not supprted for variables of this type.
You're getting the error because you're calling params like a structure, 'params.DoD_phi(1),' but you previously defined params ...

2 months ago | 1

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Answered
Reading a complex text file and building a matrix
I have not been able to utilize your example file, it's a limitation on my end. That being said, this is how I would look at do...

2 months ago | 1

Answered
Import/convert an Excel file with more worksheets into a structure with more fields, one field for each worksheet
Generally, importing multiple excel sheets is done by calling the xlsread command multiple times. One of the flags of the comman...

2 months ago | 0

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