Error in T12 (line 35) surf(X, Y, fplot) and I have no idea what I was wrong
clc clear close all syms x y f = @(x,y)(x.^2+y.^2+x.*y-12*log(x)-10*log(y)); fx = diff(f,x); fy = diff(f,y); [xc,yc] = so...

7 Tage ago | 0

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Too many input arguments using square
Code is working fine. It seems you have introduced a variable named square. Clear it and then run the function. REad about clear...

7 Tage ago | 0

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How to calculate inverse of 3d array matrices with size 3*3*18 ?
A = rand(3,3,18) ; [m,n,p] = size(A) ; B = zeros(m,n,p) ; for i = 1:p B(:,:,i) = inv(A(:,:,i)) ; end

7 Tage ago | 0

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plot 2D array using imagesc ?

7 Tage ago | 0

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How can I filter an entire row using a date?
You have varities of cunction to do that. Cnvert the required datetime column into class datetime. This class has the informatio...

7 Tage ago | 0

plot gridded data only inside shapefile

7 Tage ago | 0

Draw 3D elliptic cylinder with given parameters
You may proceed like this: a = 4.5368 ; b = 5.6885 ; C = [0.5351, -5.2359] ; L = 21.98 ; u = linspace(0,2*pi) ; v = lins...

7 Tage ago | 1

Merge rows based on conditions in the coulmns
data = importdata('dmp.txt') ; [c,ia,ib]= unique(data(:,[1 end]),'rows','stable') ; N = length(c) ; iwant = cell(N,1) ; f...

7 Tage ago | 0

Apply a color map to a 2d line
Read about patch x = linspace(1,10,15); y = sin(x); y(end) = NaN; c = y; figure patch(x,y,c,'EdgeColor','interp'); colo...

7 Tage ago | 0

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What do I have to do if I want to derivative and continue multiplying?
A = [1 2;3 4;5 6]; B = [7 8;9 10;11 12]; D = A'*gradient(B)

7 Tage ago | 0

Write a function with input .xls file to read
To load the excel data into matlab use readtable To compare values you can use isequal, ==, etc.

7 Tage ago | 0

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How can I convert surface plot into STL format file?
[X,Y,Z] = peaks(100) ; surf2stl('test.stl',X,Y,Z)

8 Tage ago | 0

How can I represent points and lines in 3 dimensions?
It is in 3D, you need to change the view. view(3)

8 Tage ago | 1

How to visualize a table in a color dot plot?
Let A be your matrix. [m,n] = size(A) ; [X,Y] = meshgrid(1:m,1:n) ; figure hold on plot(X(A<0),Y(A<0),'.b') plot(X(A>...

11 Tage ago | 2

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How to convert a Year Month and Date to Day Number?
Load the data from csv file into MATLAB using readtable You can convert the dates into date numbers using datenum

11 Tage ago | 0

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How to get column values using indexes
LEt A be your matrix. C5 = A(:,5); % 5th column M1 = A(C5==1,1:4) ; M2 = A(C5==2,1:4) ;

11 Tage ago | 0

How to plug in and solve for algebraic equation?
t = linspace(0,1) ; z = 15*(1+(4.1*0.064)/1000*(15/150)^(2/3)*t.^(5/3)).^(-3/2) ; plot(t,z)

11 Tage ago | 0

How can I implement KNN ? I want to have user input and data from excel sheet compared.
Say it loudly today that your function is knnsearch. weight = [971; 1401; 105; 210] ; age = [15; 30 ; 25 ; 67] ; data = t...

11 Tage ago | 0

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How can I detect the centroid or center of segmentation image ?

11 Tage ago | 0

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creating a three-dimensional array from three array with different size
a = rand(1,8) ; b = rand(1,7) ; c = rand(1,6) ; iwant = cell(3,1) ; iwant{1} = a ; iwant{2} = b ; iwant{3} = c ; iwa...

12 Tage ago | 1

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I want to loop for files in workspace
s = whos ; for i = 1:length(s) s(i).size end

12 Tage ago | 0

How to solve this error?
The error is clear. It seems you have an array of size 1x17 and you are trying to extract elements more than present in it. % ...

12 Tage ago | 0

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Vectors must be the same length
p1=plot (Distanz(i,:) , [Z(i,:) ; HQextrem(i,:); HQ5000(i,:); HQ10000(i,:)]);

12 Tage ago | 0

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How can i automatically Fill Legend using Cluster Number (K-means)
%Read Dataset %Find the Optimal Clusters for this dataset eva = evalclusters(dataset,'kmeans','silhouette','KList',[1:10]) K=...

12 Tage ago | 0

how to make figure that shown below
load('aaaa.mat') ; time = aaaa(:,1) ; ttt=(time/60); % Set the time in minutes for figures % Rescale the time to look ...

12 Tage ago | 0

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How do I print a given martix in a spiral matrix scan order but the start from any element as user defined?

12 Tage ago | 0

'equal' operator does not work on tables
You need not to un a loop. You can get it with one go using ==. Let T1, T2 be your tables, and you want to comapare 9 the column...

13 Tage ago | 0

Extract 2D matrix from 3D matrix

13 Tage ago | 0

Asking the user to enter the extension of the files and load all of them in the current directory
files = dir('*.txt') ; filenames = {files.name}

13 Tage ago | 0

Maths Solution to a equation
syms n eqn = cos(0.8)^n == sqrt(2) ; s = solve(eqn,n) vpa(s)

14 Tage ago | 0

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