Community Profile

photo

Bob Nbob


347 total contributions since 2016

Bob Nbob's Badges

  • Knowledgeable Level 4
  • Pro
  • Solver
  • Revival Level 2
  • 12 Month Streak
  • Thankful Level 2
  • First Answer

View details...

Contributions in
View by

Answered
A for loop with matrix as step
I'm confused what you're trying to do. From the psuedo code you wrote it looks like you're trying to loop through each of the a...

2 jours ago | 0

Answered
Choose a cell array that satisfy better some criteria
Ok, here is what I have come up with. It will probably still need some tweaking, but you should be most interested in the calcul...

6 jours ago | 0

| accepted

Answered
Is the find function a robust method to determine the number of specific values in a Matrix?
That method will certainly work, and I would generally use the same concept. I would just use the sum command though to avoid th...

9 jours ago | 1

| accepted

Answered
can any one explain this line of the code.
Per matrix math rules, when you add a single value to a matrix, that operation is applied to all values of the matrix individual...

9 jours ago | 0

| accepted

Answered
Find all the words contained in a file and make an index
You are on the right track, but you aren't calling the word index correctly. Also, I would suggest using strfind instead of the ...

19 jours ago | 0

| accepted

Answered
Describing a sum with a while loop
I'm pretty sure that adding a big number to 0 will bump you over pi on the first iteration, but maybe that's just me. I would do...

20 jours ago | 0

Answered
Select value from the list by defining criteria
I would use readtable to import the data, the logic indexing to narrow down the results. data = readtable('mydata.xlsx'); redu...

20 jours ago | 0

| accepted

Answered
How to make matlab variables named as excel header
It sounds like readtable might be what you're looking for. I don't think it's exactly what you're asking, but it should recogniz...

24 jours ago | 0

Answered
Matrix from an array
Not sure how to do it without a loop or just defining the indices, but here's something simple. A = 1:15; for i = 1:length(A)/...

24 jours ago | 0

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)....

environ un mois ago | 1

| accepted

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...

environ un mois 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), ...

environ un mois ago | 0

| accepted

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....

environ un mois ago | 0 answers | 0

0

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...

environ un mois 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...

environ un mois 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 ...

environ un mois ago | 0

| accepted

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('*...

environ un mois 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 ...

environ un mois ago | 0

| accepted

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...

environ un mois ago | 0

| accepted

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...

environ un mois 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 ...

environ un mois 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...

environ 2 mois ago | 0

| accepted

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...

environ 2 mois ago | 1 answer | 0

1

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...

environ 2 mois 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 ...

2 mois ago | 0

| accepted

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...

2 mois 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...

2 mois 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...

2 mois 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...

2 mois ago | 0

| accepted

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 mois ago | 0

Load more