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Surface Plots of 3D Matrix After sum.
Try B = sum(A); surf(squeeze(B))

presque 7 ans il y a | 1

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How to solve Error using griddedInterpolant The grid vectors are not strictly monotonic increasing?
Error using griddedInterpolant The grid vectors are not strictly monotonic increasing. Maybe it's because of lat? It's decreas...

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Convert x,y,z data to surface matrices(2D array)
Make new mesh in spherical V = p.vertices; for i = 1:3 V(:,i) = V(:,i)-mean(V(:,i)); % move to origin end %...

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Find knee/elbow of a curve
What about imdilate()? clc,clear I = imread('nett.jpg'); I1 = im2bw(I); I2 = imdilate(I1,ones(20)); Z = 1.0*cat(3,I1,I2...

presque 7 ans il y a | 0

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Find cycles in an undirected graph
Just use for loop and cells since you already know indices of each polygon s = [1 1 1 2 3 3 4 4 5 6 6 6 8 9 10 10 12 12 13 14 1...

presque 7 ans il y a | 2

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Fill a matrix after an iteration
Maybe TM = (sum(TMR)>6) .* sum(TMR);

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3D Plotting in MATLAB
Use plot3() % Voltage 9 x9 = [ 19 20 21 21 21 21 20 20 20 20 18 ]; y9 = [ 0 10 30 50 70 90 110 120 140 160...

presque 7 ans il y a | 0

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How to create a new array with variables that did not meet the required parameters.
Try cond = DwellTime>=2 & DwellTime<=2.5; [cond.*DwellTime ~cond.*DwellTime]

presque 7 ans il y a | 0

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Do not understand Curve intersections code
Intersections just loops through all segments of curves and find all intersections Many of segments have intersections, but i...

presque 7 ans il y a | 0

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sfit data array output
This code A = xlsread('ASTMG173.xls'); x = A(:,1); y = A(:,3); plot(x,y) Produces Is it the curve you want to approximat...

presque 7 ans il y a | 0

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Prompt the user to enter a vector of coefficients for the polynomial model. Verify that the entry has an even number of elements (an odd number of elements would mean an even order polynomial). If an invalid vector is entered, prompt the user to re-e
Use mod() function a = mod(b,a); % a=1 if b is odd

presque 7 ans il y a | 0

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Can this for-loop code get faster in some way?
Maybe ismember function can be replaced: dt = 60000; period_interval = 0 : dt : ts_length; n = length(period_interval); for...

presque 7 ans il y a | 1

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Solving system of nonlinear equation with boundary condition
Use isosurface to visualize roots Use if .. else statement to choose parameter if P > -c^2 T = P; elseif -c^2 < Q && Q ...

presque 7 ans il y a | 0

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Coupled differential equations kinetic
yprime and y are always connected function [ yprime ] = calibration( t,y,par,par_cali,T,x1,O2) Your input y were in wrong orde...

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Solution to ODE in matlab or simulink
I tried to solve this equation first What are constants values? % opengl software G = 2; V = 2.4; Q = 5; J = 1; n0 = 1....

presque 7 ans il y a | 1

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Trigonometric approximation on symbolic variables
subs works ok for me syms x y Tp Tw eqn{1} = cos(x) + sin(y) - Tp; eqn{2} = 1 + x + sin(x) - Tw; for i = 1:2 eqn{i}...

presque 7 ans il y a | 0

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Curve fitting function not able to reproduce curve accurately
How it's supposed to be 'Accurately' if you change output data %% some input Data id_cont = [-800,-799,-798,-797,-796,-795,-79...

presque 7 ans il y a | 0

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Plotting pcolor plot on an image at a particular area.
You can just merge images clc,clear load matlab.mat [m,n] = size(img); [X,Y] = ndgrid(1:m,1:n); Z = (X.*Y).*region; ...

presque 7 ans il y a | 0

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plot3 is showing axes but not vectors
First of all use these parenthesis to access an element: vector_e(1) MATLAB is MATrix LABoratory. Take an advantage of it % n...

presque 7 ans il y a | 0

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Which line is the first line that has an intersection with another line? or what is the order of the intersectection points?
Use third output argument of polyxpoly [xc,yc,ix] = polyxpoly(x,y,xd,yd) % ix(:,1) - number of intersected segment in [x,y] da...

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Area fill between minimum and maximum axis limit
Use patch()

presque 7 ans il y a | 1

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Plot legend does not display any lines
Please see THIS solution for colorbar error

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How does this Euler's Method for first ODE work?
Here are some basic concepts 1 - function [x,y] = Euler(h, x0, y0, interval_length, func) % h - step in X direction (dx) % x...

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How can I solve a system of ODEs having coefficients in vector form using bvp4c ?
Try this function eqns = odes(x,y,e,x0) global Pr phi Ra Da Fr A1 A2 fdesh fdeshdesh thetadesh; % global variables are...

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Rotating values within a meshgrid
So maybe rotate your data and apply griddata() again a = 45; R = [cosd(a) sind(a); -sind(a) cosd(a)]; V = R*[x(:) y(:)]'; xn...

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For Loop calculating too slowly
Maybe try [S,M,H] = ndgrid(0:60, 0:60, 0:24); data1 = repmat([2019 9 30],[length(S(:)) 1]); data2 = [H(:) M(:) S(:)]; data =...

presque 7 ans il y a | 0

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4d plotting with slices
slice() just doesn't use last column and row for displaying colors So i just copied values [X,Y,Z] = meshgrid(0:4, 0:5, 0:4); ...

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Why doesn't my blue point move towards my red point?
your initial D_VT (86.02) bigger than D (3.0) while D_VT < D % shoudl be: D_VT > D In your loop you clear previous ...

presque 7 ans il y a | 0

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Fill line with colors using the heatmap
What about pcolor() clc,clear n = 50; x = linspace(-5,5,n); [X,Y] = meshgrid(x); for i = 1:n y = sinc(x(i))+0.5; ...

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solving 4th order ode
Use bvp4c() You already have written your equation as system of first-order equations function dydt = ode4(t,y) L=1;B=0.2...

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