All Questions
260
questions
0
votes
0
answers
27
views
Matrix dimensions must agree matlab warning in a for cycle
i'm trying to use the find function but i keep receiving an error.
i have few variables
lat_rho3; 181x1 matrix
lon_rho2; 385x1 matrix
Clat; 579x1 matrix
Clon; 579x1 matrix
the next for cycle is to ...
0
votes
1
answer
148
views
MATLAB find on multiple columns to multiple column result
Setup
I have an array of captured data. The data may be captured on just 1 device or up to a dozen devices, with each device being a column in the array. I have a prior statement which I execute on ...
- 1,484
0
votes
1
answer
240
views
How can I find a row equal to a vector in a matrix in matlab ? In, particular I would like to have the indexes
I have a vector A=[1 2 3] and I have a matrix B=[5 6 8,1 2 3, 9 6 5]. How can I find the row indexes? I tried find but it didn't work
- 11
3
votes
1
answer
773
views
Matlab find() function in R
I am trying to convert some Matlab code into R. The code looks something like this:
u= [.4 .5 .1;
.2 .4 .4;
.4 .1 .5]
z= find(cumsum(u)>= rand,1)
OUTPUT: e.g. z = 3
The mathematical ...
0
votes
0
answers
37
views
How it work different matrix of find function
First, I declared two matrices.
a = [1 2 3 4; 5 6 7 8];
b = [2 4 6 8];
then, i used to find function.
find(a < b)
ans =
1
3
5
7
My question is how it works? i tried ...
0
votes
1
answer
297
views
What does find(x==1) in MATLAB exactly return and what is equivalent to it in python?
I'm trying to do what the following MATLAB code does in python but I can't quite understand the output of it. This is the MATLAB code
A = zeros((48,60));
A(3,5) = 1;
A(3,6) = 1;
A(48,60) = 1;
A(47,60)...
- 31
1
vote
1
answer
91
views
Repmat in Matlab to replicate specific elements
I have the following lines of code where I find an event "41" in my cell array called Events (minimal example of this array included below) and the lines of code allow me to add 8 events ...
- 539
-1
votes
1
answer
231
views
How to find a brightest point an image and mark it in Matlab? [duplicate]
Dears,
I would like to ask you for help with the code. My goal is to find the brightest point an image and mark it.
I used the following code to get the Image in Grey Values -> How to find and ...
- 35
0
votes
1
answer
36
views
reach a specific index in a structered matrix with the function find matlab
I receive this error
Attempt to reference field of non-structure array
Error in perturb_method (line 136)
[j,k]=find(pop(i).mat.p==x)
pop is a population of structred matix (mat) i want to knew the ...
0
votes
1
answer
220
views
Given values and bin edges, find the bin of each value in MATLAB
I have a set of values and I want to find out to which bin each of them belong in more compact, likely vectorized and most importantly faster than the one below,
values = rand(1,3)*50;
bins = 0:10:50;
...
- 1,763
1
vote
2
answers
93
views
Matlab: Find string pattern with a list of words and replace in text with one word of the list
In Matlab, Consider the string:
str = 'text text text [[word1,word2,word3]] text text'
I want to isolate randomly one word of the list ('word1','word2','word3'), say 'word2', and then write, in a ...
- 242
0
votes
0
answers
301
views
how to find unique values with matlab in cell array
How do I find unique cells in excel using matlab? i was trying to get all unique strings in some excel field,
so baisicly im trying to do somthing like this:
[~,~,mainraw] = xlsread(mainfilename,1);
...
- 169
2
votes
1
answer
567
views
Efficiently implementing Matlab's "Find" function in Julia
I'm trying to implement Matlab's Find function in Julia. In Matlab, the code is
find(A==0)
where A is a very, very large n by m matrix, and where I iterate and update the above over a series of about ...
- 673
0
votes
1
answer
184
views
Find first non consecutive element in array in Matlab
I have a vector, "triggs" with the index number of my triggers. Each trigger lasts several milliseconds and I need to find where each trigger starts.
Put otherwise, I need to find the first ...
- 327
0
votes
1
answer
63
views
What form does xarr and yarr have to be in in order to return all the co-ordinates that satisfy the equation
I'm currently looking to get this bit of code working in MatLab. I just wondering what form xarr and yarr have to be in for this to return values corresponding to coordinates of points within a circle....
