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Sending vectors in things Speak

Hi all, I have created a private channel with 4 fields. The first 3 fields have only one value so it's ok, however the fourt...

3 years ago | 0 answers | 0

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Error in Matlab MQTT file

Hi all, I'm trying to run a file regarding the MQTT in maltab, which I donwloaded the from matlab website : https://ch.mat...

3 years ago | 0 answers | 0

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define parameters in binary format

Hi everyone, I'm trying to transmit data using ZigBee with QPSK modulation. However I don't understand how in matlab I can...

3 years ago | 1 answer | 0

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Matlab compatible with multi-agent systems

Hi all, I have a general question. I have some script files in matlab and I wanna use some information from them to send t...

3 years ago | 0 answers | 1

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For loop within a function f

Hello all, I'm trying to get the following function by using a for loop: f=@(x) ((0.0011*(x(2:1*N)-x(1:N-1)))'*exp...

3 years ago | 2 answers | 0

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Diagonal of a non-squared martrix

Hello all, I have a matrix A=zeros(179,716) and I am trying to put the value "1" in its diagonal however it's not a s...

3 years ago | 2 answers | 0

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GA best f(x)/ mean f(x) don't change

Hi all, I'm using GA for optimization and my problem is that I'm getting the same best and mean value and it doesn't change a...

3 years ago | 1 answer | 0

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GA error "your fitness function must return a scalar value"

Hi all, I am trying to use GA to minimize a function which is like this: f=@(x) ((0.0011*(x(2:180)-x(1:179)))'*exp...

3 years ago | 1 answer | 0

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LP error the number of rows of A must be the same with b

Hi again, I am trying to run and LP optimization. However, I am getting the following error "The number of rows in A mu...

3 years ago | 1 answer | 0

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LP optimization error for the objective function

Hi all, I am trying to run an LP optimization. My objective function is f= @(x) 3*x(1:N)-2*x(N+1:2*N)-5*x(2*N+1:3*N)-3*x(3...

3 years ago | 1 answer | 0

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Reshape matrix to have the same value every 30 cells

Hi All, I have a question: I have a matrix A=[10; 20; 30; 40; 50; 50; 60] How can I reshape it in order to have a ma...

3 years ago | 2 answers | 0

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fmicon constraint violation issue

Hi all, I am running an optimization using fmicon, when it runs I get this message "Optimization stopped because the rela...

3 years ago | 1 answer | 0

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Error with Fmicon objective function

Hi all, I am trying to run a non linear optimization with fmincon, I have set the equality and inequality constraints but I a...

3 years ago | 0 answers | 0

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Run a script and use some variables as inputs in another script

Hi all, I have a script file and I would like to run it and export two variables (lets say "45"and "1") In order to use th...

3 years ago | 1 answer | 0

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plot a graph with two axis

Hi there, I have a matrix 1440x3 and I would like to plot a graph with two axes. (x axis the same = 1440 elements) the fir...

4 years ago | 1 answer | 0

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Fitting data for each row of a matrix

Hi there, I have a matrix 8760x8 and I would like to fit the data of each row (8 values) with a vector like this: [1 2 3 4 5...

4 years ago | 1 answer | 1

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Change the x axis in a figure with time

Hi all, I have a question: I have a figure and I want to change the x axis (which are numbers from 1 to 48) to time scale,...

4 years ago | 2 answers | 0

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Deleting rows of an array

Hi all, I have an array 48X365, where some of the columns are zero! Is there any way to delete them and get an array witho...

4 years ago | 2 answers | 0

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Adding values in an array within limits

Hi all, I have a vector A=[1 2 3 4 5 4]' I would like to get from vector A, a vector B where its elements are the same wit...

4 years ago | 2 answers | 0

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estimate the parameters of an equation

Hi there, I have a question: I have an equation like this: 45=a*5^b; is there any way to estimate a and b only from thi...

4 years ago | 2 answers | 0

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subtracting values in arrays and holding the result

Hi all, I have 2 vectors (inputs) B=[10.81 10.83 10.84 10.93 11.31 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7 11.7]'; ...

4 years ago | 1 answer | 0

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Subtracting elements within constraints

Hi all, I have a vector and I subtract each element from the previous one using the cumsum function like this B = bsxfun...

4 years ago | 2 answers | 0

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Subtracting elements with constraints

Hi all, I have an array A and I need to subtract the elements of each column using the cumsum function: B=bsxfun(@minus, A...

4 years ago | 1 answer | 0

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add values in arrays with positive and zero values

Hi, I have a two vectors a=[1 2 3 3 3], b=[0 0 1 0 2], I want to add them in such a way in order to get c=[1 2 4 4 6] whic...

4 years ago | 1 answer | 0

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adding a value until a particular value

Hi, questions never end! I have an array 17x365 and some initial values in the first row. So I would like to add a part...

4 years ago | 1 answer | 0

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subtracting elements in a vector

hi all, an easy question for you: I have a vector A= [0 1 4 10 18] how can I subtract the second element from the first, t...

4 years ago | 2 answers | 0

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how to choose k values

hi all, I have an array of 365 values and I do some calculations with an index for k=1:365 However, I need to do some diff...

4 years ago | 1 answer | 0

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replace an array with another array

hi all, I have an array A with dimensions 48x1 and i want to replace the elements 32:41 with another array B (10x1). how...

4 years ago | 1 answer | 0

Question

subtracting a particular value until that the result becomes negative

Hi all, how can I subtract elements of a column until the point that the result is negative? example: A=[1 2 3 4 5 4 2 1 1...

4 years ago | 2 answers | 0