Answered
command or how to obtain best real root of a polynomial with given unknown coefficient.
syms x a b c d e p = a*x^4+b*x^3+c*x^2+d*x+e==0 s = solve(p,x)

4 years ago | 0

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Updating variable after each loop iteration
generated_word='matlabcommunity' ; newChr=[]; promt = cell(length(generated_word),1) ; for i=1:length(generated_word) ...

4 years ago | 0

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Given a matrix, how can I slice a matrix given the input parameters are the number of rows and number of columns? See example.
Read about mat2cell. origImgMatrix = [2 4 6 8 9 2 3 4 1 4 9 8 3 9 1 4 ];...

4 years ago | 0

Answered
Best fitting curve for variable data
% data x = [1.0779 1.2727 1.4700 1.5766 1.6471 1.7396 1.7828 1.8208 1.8370]' ; y = [7.9511 9.8400 ...

4 years ago | 1

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Plot only a part of the histogram
Read about xlim. xlim([-0.1 0.1])

4 years ago | 0

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Answered
MAKE Vector by loop and if statement
If you want to store the index: y = zeros([],1) ; u=length(Datatest.Timehhmm); count = 0 ; for i=1:u z= Datates...

4 years ago | 0

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Error on plotting (Index in position 1 exceeds array bounds. Index must not exceed 51.)
Simply try: surf(T_n)

4 years ago | 1

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Answered
Problems with a if statement in a for-loop
id = true(anzahl_runs,1) ; for k=1:anzahl_runs if any (intens_RL(k,:)==1) Ratio(k,1)=SpalteSr87(k,:)/SpalteSr86(...

4 years ago | 2

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Answered
Index exceeds the number of array elements. Index must not exceed 1 error
The function dxdtProb20222 needs input as x; x should be an array of size 1x6 or 6x1. It seems in your case x is of not that siz...

4 years ago | 0

Answered
Storing values from for-loop into a matrix
In MATLAB array indices should be posititve integers, in the given code, i the loop index is used as index in T, V; i is not an ...

4 years ago | 1

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Answered
Fit a least squares ellipse
Replace this line: A=R(1:6); with A=R(1,6); There is a typo error in getting A. A is a vector in your case, you arenot gett...

4 years ago | 0

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Answered
Gather specially vector satisfied the condition
np=100; X = zeros(np) ; x = 1.5*randn(np,1); for i = 2:np X(:,i) = 0.5*(X(:,i-1)+randn(np,1)); end

4 years ago | 0

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Answered
Calculate and plot the shortest distance (norm) between a point and a line in 3D space
It is an easy task to achieve. You can find the foot of the perpendicular. Refer this: https://www.toppr.com/ask/question/the-...

4 years ago | 0

Answered
Separating data into one-second intervals, and finding the maximum data in each interval
As you said data is from 40-80 seconds and each second has 1300 data points, you can pick the first 40*1300 rows and reshape the...

4 years ago | 1

Answered
Extract Cell Data Contain With Char
fg = {'07-Apr-2022'; '08-Apr-2022'; '09-Apr-2022'}; datetime(fg)

4 years ago | 0

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Answered
why I can't export the training plot
Try: currentfig = findall(groot, 'Tag', 'NNET_CNN_TRAININGPLOT_UIFIGURE'); savefig(currentfig,['Training,','.fig']);

4 years ago | 1

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Answered
Lines vanishing on plot when rescaling axes
I don't think they are vanishing...they might be mixing up with the already existing line: Try: plot(xdata, ydata1, 'k') hold ...

4 years ago | 0

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How do I compute volume of a set 3-D point?
Read about trapz. Refer: https://in.mathworks.com/matlabcentral/answers/1455449-how-to-calculate-volume-of-surf-plot-3d-plot-e...

4 years ago | 0

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Answered
Why I see only the last value of my row vector in the workspace?
You are using the vector as the loop index so obviously you will find only the last value. You can check it your self. for a =...

4 years ago | 0

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Answered
How to find the mean of a column in a matrix using for loop?
TempSenVal=[58.3 59.2 60.2 63.0 63.3; 62.5 63.8 64.9 65.2 65.8;... 63.2 64.2 65.3 67.8 67.9; 64.0 65.1 67.8 68.2 69.1; 65.5...

4 years ago | 0

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Answered
How to plot a color shade instead of graph curves?
How about this approach? load('p0_t.mat') ; x = t ; y0 = min(p0(:)) ; y1 = max(p0(:)) ; y = linspace(y0,y1,300) ; [X,Y...

4 years ago | 0

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How to fit a curve into contour plot?
Get the contour line coordinates using the contour function and use polyfit. Read about polyfit.

4 years ago | 0

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How to reshape matrix by column number?
demand = [1 78 0 0 0 0 0 0 0 0 8 45 0 1 79 0 0 0 0 31 8 0 0 0 0 0 1 80 456 0 4 0 39 0 0 0 16 0 0] ; n = size(dema...

4 years ago | 0

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How to select the frame at the mouse click from a video?
REad about ginput and getpts.

4 years ago | 1

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Answered
How to select points from a input video?
v = VideoReader(myvideo) ; n = 10 ; % say this the frame you want to read frame = read(v,n); imshow(frame) [x,y] = getpts ...

4 years ago | 0

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Answered
Average a section of a column in a table based on another column values
[c,ia,ib] = unique(T3.index) ; N = length(c) ; iwant = zeros(N,1) ; for i = 1:N iwant(i) = mean(T3.value(ib==i)) ; end

4 years ago | 0

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Answered
Using First Two Columns to Solve for Third
M = [0;30;90;180;200;350] ; e = [0.01;0.01;0.01;0.01;0.01;0.01] ; N = length(M) ; iwant = cell(N,1) ; for i = 1:N iw...

4 years ago | 0

Answered
Print value of correlation to a plot displaying two functions
R = corr(y1,y2,'Type','Kendall') ; figure(); hold on; plot(Year,y1); hold on; plot(Year,y1); str = sprintf('%f',R) ; ...

4 years ago | 0

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Answered
how can i use a loop to run the specific code
ncFiles = dir('E:\data\2002\*.nc') N = length(ncfiles) ; Q = zeros(N,1) ; for i = 1:N ncFile = fullfile(ncFiles(i).fol...

4 years ago | 0

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Answered
plot graph for multiple values for one of the variables on the same axis (and in different colours)
You have to initilaize the variables inside the loop. Read about initliaing an array in aloop. r1=18e-2; % inner radius of s...

4 years ago | 0

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