Question

Convert cell array to an array, when the size of the cells is different

Hi all, I have a cell array like this A={ [0 0 0 0] ; [1 1] ;[2] } Is it possible to convert it in an array? I tried with...

circa 3 anni ago | 2 answers | 0

Question

makedist discrete uniform distribution

Hi all I am trying to create a uniform discrete distribution, with 5 values (20% probability each), by using makedist command ...

circa 3 anni ago | 3 answers | 0

Question

Convert a string into a function of x

Hi all, I have created a string like this: Sstr = join(compose('(x(%d:%d)-x(%d:%d))))', A), ' + ') so I get a result: Ss...

circa 3 anni ago | 1 answer | 0

Question

create indexes of x in a for loop

Hi all, I am trying to create and save some x values in an array in a format of A=[x(2)+x(3);x(3)+x(6);x(4)+x(9)]; so I tri...

circa 3 anni ago | 1 answer | 0

Question

Symbolic variables in a for loop

Hi all, I am trying to create a sum of, which has x and I want to create a for loop to give me the result below : A= [x(...

circa 3 anni ago | 0 answers | 0

Question

Create a vector by selection randomly vectors

Hi all, I have 4 vectors A=[1 2 3 4 5]; B=[0 2 5 6 19]; C=[0 0 1 3 0]; D=[1 0 1 15 0]; And I want to create...

circa 3 anni ago | 3 answers | 0

Question

Objective function in a for loop

hi all, I have an objective function that I want to minimize N=10 f=@(x) ((0.0011*(x(2:1*N)-x(1:N-1)))'*exp(-0.00...

oltre 3 anni ago | 1 answer | 0

Question

Convert tables to arrays in a for loop

hi there, I have some tables named (data_1, data_2 ,data_3, data_4,data_5) is it possible to convert them to arrays by usi...

oltre 3 anni ago | 1 answer | 0

Question

ThingSpeak internal server error

Hi all, I am trying to send data to thingspeak server through a channel by using the commands thingSpeakWrite. However I g...

oltre 3 anni ago | 1 answer | 0

Question

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...

oltre 3 anni ago | 0 answers | 0

Question

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...

oltre 3 anni ago | 0 answers | 0

Question

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...

oltre 3 anni ago | 1 answer | 0

Question

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...

oltre 3 anni ago | 0 answers | 1

Question

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...

oltre 3 anni ago | 2 answers | 0

Question

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...

oltre 3 anni ago | 2 answers | 0

Question

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...

circa 4 anni ago | 1 answer | 0

Question

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...

circa 4 anni ago | 1 answer | 0

Question

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...

circa 4 anni ago | 1 answer | 0

Question

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...

circa 4 anni ago | 1 answer | 0

Question

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...

circa 4 anni ago | 2 answers | 0

Question

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...

circa 4 anni ago | 1 answer | 0

Question

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...

circa 4 anni ago | 0 answers | 0

Question

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...

circa 4 anni ago | 1 answer | 0

Question

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...

oltre 4 anni ago | 1 answer | 0

Question

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...

oltre 4 anni ago | 1 answer | 1

Question

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,...

circa 5 anni ago | 2 answers | 0

Question

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...

circa 5 anni ago | 2 answers | 0

Question

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...

circa 5 anni ago | 2 answers | 0

Question

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...

circa 5 anni ago | 2 answers | 0