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...

plus de 3 ans 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 ...

plus de 3 ans 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...

plus de 3 ans 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...

plus de 3 ans 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(...

presque 4 ans 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...

presque 4 ans 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...

presque 4 ans 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...

presque 4 ans 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...

presque 4 ans 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...

environ 4 ans 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...

environ 4 ans 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...

environ 4 ans 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...

environ 4 ans 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...

plus de 4 ans ago | 2 answers | 0

Answered

Diagonal of a non-squared martrix

Alright thanks a lot!!!!

Diagonal of a non-squared martrix

Alright thanks a lot!!!!

plus de 4 ans ago | 0

| accepted

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...

plus de 4 ans 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...

plus de 4 ans 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...

plus de 4 ans 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...

plus de 4 ans 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...

plus de 4 ans 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...

plus de 4 ans 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...

plus de 4 ans 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...

plus de 4 ans 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...

plus de 4 ans 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...

environ 5 ans 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...

environ 5 ans 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,...

plus de 5 ans 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...

plus de 5 ans 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...

plus de 5 ans 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...

plus de 5 ans ago | 2 answers | 0