# #matlab

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• Published: 17/08/2019
I have a 3x3 matrix, for example A=[3,2,4;2,0,2;4,2,3] , and I'm trying to solve the following linear system in the form A*[a;b;c] = [8*a;8*b;8*c] : 3 2 4 a 8a 2 0 2 * b = 8b 4 2 3 c 8c Ok, so I have: ... Read more
• Published: 17/08/2019
(edited, i have changed the code) Well i have compound equations that i need to solve in matlab and find the result. I have tried different techniques but have failed. the equations are: u(j-1)-2(u(j) ... Read more
• Published: 17/08/2019
I'm going to write a program where the input is a data set of 2D points and the output is the regression coefficients of the line of best fit by minimizing the minimum MSE error. I have some sample po ... Read more
• Published: 17/08/2019
This question already has an answer here: How does this code for standardizing data work? 1 answer Given a matrix X with an arbitrary number of columns and rows (Each row representing a feature of the ... Read more
• Published: 17/08/2019
There's a warning when I tried to do an integration with MATLAB! syms z int(exp(sin(z)),z) Warning: Explicit integral could not be found. Read more
• Published: 17/08/2019
I'm using K-means clustering in color-based image segmentation. I have a 2D image which has 3 colors, black, white, and green. Here is the image, I want K-means to produce 3 clusters, one represents t ... Read more
• Published: 16/08/2019
How does one list/view/clear persistent variables in MATLAB? I'd like to see persistent variables not for a particular function, but for all functions that have persistent variables currently in memor ... Read more
• Published: 16/08/2019
Trying to plot a graph for ask, fsk & psk modulation from binary input. The graphs of psk and fsk modulation are ok, but the ask modulation graph seems to ignore the 0 values and doesn't plot them ... Read more
• Published: 16/08/2019
How can I find the location of barcode in an image? Original Image Read more
• Published: 16/08/2019
I’m implementing softmax regression in Octave. Currently I’m using a non-vectorized implementation using following cost function and derivatives. Source: Softmax Regression Now I want to implement vec ... Read more
• Published: 16/08/2019
I am getting some information from Thingspeak.com on matlab. The matlab code then processes that information and sends it (socket programming) to an android app, acting as a server. The issue is that ... Read more
• Published: 16/08/2019
This question already has an answer here: Matlab matrix indexing from 2 Arrays (X,Y) 1 answer two arrays defining 2d coordinates, as array indices, in matlab/octave 2 answers Consider a matrix A=zeros ... Read more
• Published: 16/08/2019
I am trying to generate HDF5 from a MATLAB function and am facing out of memory issues. I am new to MATLAB and not much idea about MATLAB. Can someone help me fix the issue with the code. Here is the ... Read more
• Published: 16/08/2019
I have created my formulation for the electric vehicle routing problem on Matlab as a mixed integer optimisation problem. However it cannot find a feasible solution. From what I have read, this is due ... Read more
• Published: 16/08/2019
Say I have a GUI class that creates an uifigure (see below). I can create an instance of this class in my workspace: tG = testGUI('hi!'); I can close the GUI by calling the delete method: tG.delete() ... Read more
• Published: 16/08/2019
I am trying to plot some waypoints using the Google-Earth toolbox . The documentation for it is pretty poor, so I figured this would be a good Stack Overflow question. I have a matrix, wypts that has ... Read more
• Published: 16/08/2019
let us consider following code : step=3; sigma=-150:step:150; TrMax=-((a1+sigma).^2)/(4*k1); % find position where Trmax is equal to minimum(possible zero) posmin = find(TrMax==min(TrMax)); % fprintf( ... Read more
• Published: 16/08/2019
I have the following code in Matlab: a = zeros(23,1) b = zeros(23,1) c = zeros(23,1) How can I write it more compactly? I was looking for a solution that is something like this: str = {'a','b','c'} fo ... Read more
• Published: 16/08/2019
When I run the following code, sizetotal=numel(ItAColumn); % size is 378 for i =1:sizetotal if isnan(ItAColumn(i)) ==1 disp('Great!') end end I get this error Index exceeds the number of array element ... Read more
• Published: 16/08/2019
This is a matlab code that uses guide to run a timer. The timer function counts 10 numbers starting from the number provided in the text field. I would like to know how to enter two numbers successive ... Read more
• Published: 16/08/2019
I have two datasets in excel of cell arrays which have columns containing charaters and numbers. The first dataset has 300 rows and 10 cols, and the second dataset 250 rows and 9 columns. Column 10th ... Read more
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