Answered
Storing values from for-loop into a matrix
在MATLAB数组索引应该posititve integers, in the given code, i the loop index is used as index in T, V; i is not an ...

9 days 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...

9 days 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

9 days 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-...

9 days 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...

9 days ago | 1

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

9 days 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']);

10 days ago | 1

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 ...

10 days ago | 0

Answered
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...

10 days 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 =...

10 days 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...

10 days 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...

10 days 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.

10 days ago | 0

Answered
How to reshape matrix by column number?
需求= [1 780 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...

10 days ago | 0

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

11 days 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 ...

11 days ago | 0

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Answered
Average a section of a column in a table base don 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

11 days 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...

11 days 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) ; ...

12 days 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...

12 days 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...

12 days ago | 0

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Answered
画一个圆,已知半径
th = linspace(0,2*pi)' ; R = 1; x = R*cos(th) ; y = R*sin(th) ; % make groups G = zeros(size(th)) ; G(th >= 0 & th < ...

12 days ago | 1

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Answered
How to merge two matrix?
a=[6 6 5 6 5 6 6] ; b = [0.74 0.66 0.58 0.47 0.62 0.75 0.76] ; [c,ia,ib] = unique(a) ; N = length(c) ; G = cell(N,1)...

12 days ago | 0

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Answered
How to create a cell array by repeating a row vector
A = 1:10 ; B = reshape(repelem(A,4,1),2,2,10) ; C = num2cell(B,[1 2]) ; celldisp(C)

13 days ago | 0

Answered
Graph plotting of f(x,y)=e^x+e^y using ezsurf
clear clc syms x y f=(exp(x)+exp(y)) ezsurf(f) colormap cool

13 days ago | 0

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Answered
I want to get the result, not the graph, what to do
[f,xi] = ksdensity(x,x1);

13 days ago | 0

Answered
How to refill the Missing values to complete the sequence
Read about fillmissing. load('Values.mt') ; idx = Values == 4000 ; % get missing values i.e. 4000 Values(idx) = NaN ; % ...

14 days ago | 0

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How to take monthly average from table?
Read about retime. https://in.mathworks.com/help/matlab/ref/timetable.retime.html

14 days ago | 0

Answered
How to find the closest value to the average in an array?
a = [1,2,3,4,5,6,7] ; [val,idx] = min(abs(a-mean(a))); a(idx)

15 days ago | 0

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Answered
How to stop loop rewriting
notebook = readtable('notebook.xlsx'); filename = notebook.Filename; num_files = length(filename); exp = cell(1,num_files);...

15 days ago | 0