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Can one save the filename as a variable in 'readtable'?
you can save char arrays in a variable and then concatenate it with the extension using [] operator. filename = 'texas'; T = r...

5 years ago | 1

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difference between adjacent elements of a vector
A = [1,4,6,10,33,200]; out = A(1:end-1) - A(2:end); Read about indexing here: https://www.mathworks.com/company/newsletters/ar...

5 years ago | 1

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Answered
How to find and plot the absolut average error of a fittet curve to a Set of Data
You can add the absolute error between actual datapoints and fitted curve like this p{i} = polyfit(x_relevant{i}, y_relevant{i}...

5 years ago | 0

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Array indices must be positive or logical values.
In MATLAB, the index of an array starts from 1 (as compared to many other languages where it starts from 0). Therefore, these li...

5 years ago | 2

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Answered
How to draw line graph with same values in this bar graph?
Are you looking for something like this x = [1 2 3 4 5 6 7]; temp_high = [149.1350 143.9020 19.1230 19.0350 11.8150 19.8610 1...

5 years ago | 0

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why Matlab websave function doesn't work?
websave() was introduced in R2014b. There is no way to use it in R2014a.

5 years ago | 0

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3D plot of 3 vectors
You first need to convert your data into a grid format using scattered interpolation x = data(:,1); y = data(:,2); z = data(:...

5 years ago | 0

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Answered
How to use For loop or any other loop to rearrange elements in a matrix using Matlab?
Try this M = readmatrix('Boundary_closed_1s_3s.txt'); for i = 1:size(M,1) idx1 = find(M(i,:), 1, 'first'); idx2 = ...

5 years ago | 1

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How to add values at blue dots in graphs?
There is no general way. You can use text() to place the values, but to customize the location will require manual tweaking. For...

5 years ago | 0

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Answered
how to make if accept letters?
Several problem: 1. = is an operator for assignment in MATLAB. For comparison, you need to use == if yesno == y 2. You want t...

5 years ago | 0

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Property validation for a vector
You can use mustBeVector validation function. properties Col {mustBeVector} end Functions are listed here: h...

5 years ago | 0

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Answered
1x2 Cell with each ?field? containing 2 values
You have 'a' like this a = {[1 2], [3 4]}; To access first elemets, you need to use indexing like this a{1,1}(1) a{1,2}(1) ...

5 years ago | 1

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Indexing of a size() object
Unlink some other languages, such a chain of indexing is not supported in MATLAB. You can find the discussion on this issue on t...

5 years ago | 1

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Answered
arg min for Optimization problem
You can use fminunc(): https://www.mathworks.com/help/optim/ug/fminunc.html or fmincon():https://www.mathworks.com/help/optim/ug...

5 years ago | 0

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add labels to x axis
Add this line at the end of your code xticklabels(X)

5 years ago | 0

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Answered
Problem in putting limit to the variable
'x' is already in this range. You are printing the value of 'extreme_values', not 'extreme_points' syms x f=0.3*(x-0.6)*(x-0.9...

5 years ago | 0

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How can we do for following fprintf formating
It is not possible to do such thing in command window currently: https://www.mathworks.com/matlabcentral/answers/255568-putting-...

5 years ago | 0

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Create matrix with two matrices
You can do something like this A = [1 2 3; 4 5 6;7 8 9]; B = [ 11 12 13;14 15 16;17 18 19]; Matrix = zeros(size(A,1)+size(B,1...

5 years ago | 0

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How to create a Nx3 array from Nx4 array
You can use cellfun() C1; % 100x1 with Nx4 matrices C2 = cellfun(@(x) {x(:,2:end)}, C1);

5 years ago | 0

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Answered
Non-linearly spaced axis
You need to set the xscale to 'log'. Run the following line after creating the plot xlim([0.01 1000]) set(gca, 'XScale', 'log'...

5 years ago | 0

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Answered
Plotting the given Trigonometric functions
You can use fimplicit() fun = @(x, y) y.*sin(2*x) - x.*cos(2*y); fimplicit(fun, [-10 10 -10 10])

5 years ago | 0

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Answered
solution of a system non linear equations
If your system of equations has multiple solutions, fsolve() can only give you a single solution based on the initial point x0. ...

5 years ago | 1

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Answered
how do i substract the first value from the last one on an array taking out zero values?
If all the non-zero values are in increasing order, the try this M(M~=0) = M(M~=0) - min(M(M~=0)); Result >> M = [ 0 ...

5 years ago | 0

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get the image from the NYu depth dataset
The screenshow shows that the dataset loads images in a 4D array. You need to specify which image you want to see. For example ...

5 years ago | 0

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Undefined function or variable error
This usually means that MATLAB is not able to see the file get_kmers.m. MATLAB can only see a file if it is on its search path. ...

5 years ago | 0

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Create delimited random vertices
You can sort the randomly generated values x = sort(randi([1 49], 5, 1)); y = sort(randi([1 49], 5, 1));

5 years ago | 0

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Answered
How can I concatenate 163 matrices into a single matrix with a loop?
The first problem here is to name your variable like G1, G2, ..., G163. It is known to be a bad coding practice: https://www.mat...

5 years ago | 1

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Answered
Write text below the photo
You can use xlabel to write something below the axes. xlabel('PSNR') Otherwise, you can also use text(), but this option is a ...

5 years ago | 0

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Answered
how to use "fullfile" with exportgrahics
exportgraphics(gcf, fullfile(directory, fileName)', 'eps', 'Resolution',3000) %...

5 years ago | 0

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Answered
How i extract the components of a vector/matrix output ?
Yes, that is the syntax. a(1) and a(2) a=polyfit(x,y,1); first_element = a(1); second_element = a(2); Read about indexing he...

5 years ago | 0

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