Answered
How to remove the first element and last element based on First column
Here's one way x1 = [1,293;... 1,274;... 1,329;... 1,348;... 2,237;... 2,374;... 2,32...

4 years ago | 0

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Answered
How to select columns from data matrix using for loop?
partbin = reshape (pdp,24,[]); threshold = 0.0435; for i= 1:size(partbin,2) current_column = partbin(:,i); ...

4 years ago | 0

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How to generate rectangles based on coordinates in a randomized matrix?
S.matrix(:,1) is a vector, so S.matrix(:,1) == 1 is a vector (of class logical) the same size as S.matrix(:,1). When that vector...

4 years ago | 1

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Answered
I keep getting inf for Ru
Use element-wise division (./) in the expression for Vm. Also, it looks like the expression for Ru should have 1./(T+273) rather...

4 years ago | 0

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Answered
how to increase two variables in a for loop at the same time
In general: theta_inf_1_values = 7:2:15; theta_inf_2_values = 15:-2:7; for ii = 1:numel(theta_inf_2_values) disp(ii) ...

4 years ago | 0

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Answered
Multiply a number with a line of returns
v = [0.01 0.02 0.03 0.05 0.1 0.01 0.02 0.05 0.07]; P = 10; If you want the cumulative effect of each return: P*cumprod(1+v) ...

4 years ago | 0

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Answered
How can I convert 3d MRI data (128x128x27) into 4d (128x128x1x27) for visualization using montage?
mri.mat is a .mat file included with the MATLAB installation that contains a few variables: which mri.mat S = load('mri.mat') ...

4 years ago | 0

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Answered
Opening a Textfile in MATLAB Appdesigner Online
fopen merely opens a file so that subsequent code can read from or write to the file. To read the contents of a file into a var...

4 years ago | 0

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Why does my loop stop after the first iteration?
Mn_A takes 2 input arguments, x1 and n: function r = Mn_A(x1,n) But later in the function Mn_A, you call Mn_A with one input: ...

4 years ago | 1

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Answered
What is the equivalence for the Big M in MATLAB?
Sounds like you want Inf (infinity) % Inf is not the minimum of the vector, as long as there % are some finite number (non-In...

4 years ago | 0

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Answered
How can I insert a while loop inside a for loop on Matlab without having to manually stop the run?
One thing is, you probably mean to have abs in the while condition. That is, say h1(i)-h1(i-1)==-1000 (and the same for h2, etc....

4 years ago | 0

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help creating a matrix from data in a for loop.
hrs = 24; % 24 hours iterations = 60; % 60 iterations per hour data = zeros(iterations,hrs); % initialize data to be a 60-by-2...

4 years ago | 0

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Answered
importing only one element of a matrix into a function
Yes, that's fine. (Try it and see.) The only thing I would point out is that you probably don't want to overwrite f each time, ...

4 years ago | 0

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How can I copy lines of an external text file to another file
Here's one way: fid_in = fopen('a.txt'); % input file fid_out = fopen('b.txt','w'); % output file for ii = 1:4 % read (and di...

4 years ago | 0

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How can I change the title of the subplots with forloop iteration?
subplot counts across the first row first, i.e., subplot(6,4,2) is the subplot in the second column of the first row (not the fi...

4 years ago | 0

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Answered
How do I get an output in vector form of (h,m)
I'll assume that a vector of the form (h,m) means a column vector of Volume values, each element corresponding to an h and an m,...

4 years ago | 0

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How to interpolate a matrix
data = randi(100,8) n = size(data,1); data_interp = interp1(1:n,data,linspace(1,n,11*(n-1)+1)) isequal(data_interp(1:11:end,:...

4 years ago | 1

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Answered
Invert Y data (Y axis)
Do this: set(gca(),'YDir','reverse') at the end (or anywhere after imagesc).

4 years ago | 1

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Answered
Only part of my plotted line will dash and how to add text to a line in the plot?
text requires 2 coordinates (x,y) or 3 coordinates (x,y,z) to specify the text location. You were supplying only one coordinate....

4 years ago | 0

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How to find the average of y over a range of x?
% some times, x: x = 0:0.01:9 % some amplitudes, y: y = sin(x) % plot y vs x to visualize (see plot below): plot(x,y) ...

4 years ago | 1

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Answered
How to output a large matrix to one excel with multiple sheets in specific size?
% a 289x52 matrix: xy = readmatrix('test100_4.4.22cellsmeetcriteria.xlsx'); % write each pair of columns (one x and one y) ...

4 years ago | 0

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Answered
I need to prompt the user for a vector of any length and sort the numbers into prime, even or odd and display them.
The code as written will check whether x is prime only if x is not even and not odd. But if x is an integer, it's either even or...

4 years ago | 0

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Answered
Adding unique values to an array
You can use ismember to check whether the new random number is already in the array of unique numbers: UNI = []; while numel(U...

4 years ago | 0

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Answered
I get "Index exceeds the number of array elements (2)" error. Would appreciate any help.
This line: xmit = randi(P,1,M); makes xmit a 1-by-M vector of random integers, with values between 1 and P. With P=1000 and M=...

4 years ago | 1

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how do i write function sin together with square root in matlab?
The square root function is sqrt 2*sin(sqrt(x))-x

4 years ago | 1

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How to fix " --> " arrow like Data as result of read file function?
Those arrows represent tabs. In the file, the numbers are separated by a tab followed by one or two spaces, except before the 14...

4 years ago | 1

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Answered
Splitting Cells Within A Cell Array
% some made-up data in the same format as yours: C = { {'Droo Breeze',157}; {'Thom Braadie',751}; {'Jo Mountaine',999}; {'Jon E...

4 years ago | 0

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Answered
How do I change the legends font size but not the scale size on my geobasemap?
CTDlatlon = struct( ... 'Latitude',0.5*rand(1,5)+63.5, ... 'Longitude',3*rand(1,5)-42); mycmap = flipud(parula(leng...

4 years ago | 0

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Change format number of output vector
Looks like maybe you have something like this: x = 1e4*[0.000150506971824 0.000475944834700 1]; format long x You can try ...

4 years ago | 0

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Answered
Division by repeated subtraction with remainder
DbyS(4,3) Consider that the following lines of code: r = x; while r > y r = x - y; q = q + 1; end z = [q r]; app...

4 years ago | 1

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