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darova


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1.254 total contributions since 2019

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Answered
How to solve this fourier series/ boundary value on matlab?
here is a start function res = f(t) if t < 1 res = t; elseif t < 2 res = 1; else res = 3-t; end end and us...

alrededor de 2 horas ago | 0

Answered
3D-Surface between 2 lines.
what about this? xf = [xl2(1) xl2(5) xl1(4) xl1(5)]; yf = [yl2(1) yl2(5) yl1(4) yl1(5)];

alrededor de 2 horas ago | 0

Answered
Custering data by color
here is an example. Adapt it for you needs % generate some data t = linspace(0,2*pi,1e4)'; x = cos(50*t) + 0.8*cos(t); y = s...

1 día ago | 1

| accepted

Answered
How to find data points from a 3D plotted graph in MATLAB
use griddata y1 = griddata(X,Z,Y,x1,z1);

1 día ago | 0

Answered
How to put X on intersecting points and find an angle
Try this script

1 día ago | 0

Answered
How to divide a graph into 8 equal region and assign a number for each region?
Here is the start x = 0:.2:20; x = [x'; nan]; % add 'NaN' to break the line y = sin(x); c = round( (1:length(x))/length...

2 días ago | 0

Answered
Obtain data points from plot using 'buttondownfcn' nested functions
Here is an example function main x = rand(100,1); % generate random data y = rand(100,1); h = plot(x,y...

2 días ago | 0

Answered
ode45 error rungg- kutta
You probably run the code in a wrong way. Here are some changes

2 días ago | 0

| accepted

Answered
Extracting data from a graph image using 'ginput'
here is an example x = rand(100,1); % generate some data y = rand(100,1); plot(x,y,'.r') p = ginput(1); d ...

2 días ago | 0

Answered
By tonight I'd like to create an image from RGB data in a file
I think you are looking for griddata

2 días ago | 0

Answered
How to Seperate Region of Interest into 3 Segments
Adapt this example for your needs [x,y] = meshgrid(1:100); I0 = (x-50).^2/4 + (y-50).^2 < 20^2; % create ellipse [i1,j1] =...

2 días ago | 0

Answered
How do I select a region on a 3D plot and extract the indices of the enclosed points?
Here is the script that sould be helpfull

2 días ago | 0

Answered
Can anyone help with this error? (I just want to see the contour of the bluish area at the bottom of the image)
Detect blue region properly I0 = imread('frame75.jpg'); I1 = double(I0); % colors from blue region R = [80 50 0]; G = [...

3 días ago | 0

| accepted

Answered
How to Plot Stress Contour??
Reshape your data to create a matrix stress = reshape(Sigma_X,6,3); And use pcolor [x,y] = meshgrid(1:3,1:6); Sigma_X = 1.0e...

3 días ago | 0

Answered
How to draw circles at the start of a video and display these circles again at specified framecounts?
You already wrote if statement for the first frame if framecount == 1 Add another condition for each 5 frame if framecount ==...

3 días ago | 0

Answered
Counting line particales in an image
binarize image use imopen to remove thin objects (lines) detect lines use bwlabel to calculate the number of lines

3 días ago | 0

Answered
if else statement for tabular data classification
Try for loop

3 días ago | 0

Answered
I have surface data stored in faces and vertices. How to extract data in a slice (or 2D plane) from this Faces and vertices data?
Use interp2 [x,y,z] = peaks(20); x1 = linspace(min(x(:)),max(x(:)),20); y1 = sin(x1); z1 = interp2(x,y,z,x1,y1); surf(x,y,z...

3 días ago | 0

Answered
Projection of 3D positions histograms in planes XY, YZ, and XZ
Here is an example m = 20; % generate some data n = 500; x = randn(500,1); y = randn(500,1); z = randn(500,1); % ...

4 días ago | 0

| accepted

Answered
How to plot three dimensional triangular based pyramid?
Here is the way [x,y] = pol2cart(deg2rad(0:120:360),1); x1 = [x*0; x; x*0]; y1 = [y*0; y; y*0]; z1 = [x*0+1; x*0; x*0]; sur...

4 días ago | 0

| accepted

Answered
How to modify values in an array at a certain point inside a loop?
Just add if condition inside your for loop clc clear all a=1.4 for i=1:10 %Here i represents years A(:,:,i)=a; %...

4 días ago | 0

| accepted

Answered
Colored gradient fill under curve
Use alphaData property, set facealpha to interp x = 0:0.2:10; y = sin(x)+10; xx = [x;x]; yy = [y;y*0]; surf(xx,yy,xx*0,... ...

6 días ago | 0

Answered
Voxel export into stl file
What about isosurface? clc,clear clf r = 10; [x,y,z] = meshgrid(-r:r); v = x.^2+y.^2+z.^2<r^2; h = isosurface(x,y,z,v,0.9)...

6 días ago | 0

Answered
finding the area of segmented region
Try this I0 = imread('image.png'); I1 = double(I0); imshow(I0); h = msgbox('pick a color'); uiwait(h) p = round(ginput(1))...

6 días ago | 1

Answered
How to create multiple graphs based on a variable that goes into a for-loop?
Maybe you need only one more for loop expansion = [1 2 3 4]; x = 0:10; % data for k = 1:length(expansion) y = sin(x)*ex...

6 días ago | 0

| accepted

Answered
get the inflection points of a contour
Here is a start: use boundary function to find (x,y) coordinates of your contour (and order) Smooth the curve: reduce points a...

6 días ago | 0

Answered
Find Specific Faces on a 3D PDE DiscreteGeometry/ThermalModel
Here is an example [x,y] = pol2cart(pi/4:pi/2:2*pi,1); % rectangle gd = [2;length(x);x(:);y(:)]; % geometry description...

7 días ago | 1

Answered
How to find the area for each regions with different pixels intensity
See this trick I0 = imread('image.png'); kk = unique(I0(:)); for i = 1:length(kk) I1 = I0 == i; imshowpair(I0,I1) ...

7 días ago | 0

Answered
What's the best way to interpolate the vertices of a polygon?
The best way is described here: Interpolation of 3D point data

7 días ago | 0

| accepted

Answered
How can I cut the connection between the areas?
Try surf x = [time; time]; y = [Ventricle; min([Ventricle;Atrium])]; surf(x,y,x*0,'edgecolor','none','facecolor','r')

8 días ago | 0

| accepted

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