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darova


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1,260 total contributions since 2019

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Answered
I was wondering if this code could be vectorized, and if so, can it be done without conditionals or loops? It would be great if the vectorized form could be written out so that I could run and follow
use impoly to create triangle region tri = ones(height); imshow(tri) p = impoly(gca,[0 1; 1/2 0; 1 1]*height); tri1 = p.crea...

1 day ago | 1

Answered
plotting in for loop
See my recommendations

2 days ago | 0

Answered
How can I color the region bounded by two level curves of countour plots?
extract data from contour function use polyxpoly to find intersection segments

2 days ago | 0

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How to divide a closed detected edge of an image into 8 parts from a point inside in it..?
use bwboundaries to get coordinates of a circle divide into equal parts x(1:end/8)

2 days ago | 0

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Plotting 3D Animation from 4-D Data
Here is the start clc,clear load 4D_Data.mat % initialization of surfaces for j = 1:size(T_adi,3) h(j) = surface(...

2 days ago | 0

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Answered
How can I count scatter data surrounded by shapes?
Use inpolygon

2 days ago | 0

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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...

3 days ago | 0

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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)];

3 days ago | 0

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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...

4 days ago | 1

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

4 days ago | 0

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

4 days ago | 1

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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...

5 days 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...

5 days ago | 0

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

5 days ago | 0

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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 ...

5 days 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

5 days 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] =...

5 days ago | 0

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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

5 days ago | 0

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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 = [...

6 days ago | 0

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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...

6 days 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 ==...

6 days ago | 0

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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

6 days ago | 0

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if else statement for tabular data classification
Try for loop

6 days 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...

6 days 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); % ...

7 days ago | 0

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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...

7 days ago | 0

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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; %...

7 days ago | 0

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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,... ...

9 days 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)...

9 days 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))...

9 days ago | 1

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