darova

Last seen: 5ヶ月前

1,266 2019 年以降の合計貢献数

darova's バッジ

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Quiver Transparency and Shape
use patch to manipulate edgeAlpha cla t = linspace(0,2*pi,30); [x,y] = pol2cart(t,1); patch(x,y,t,'edgealpha',0.5,... '...

5ヶ月前 | 0

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How I make my phase portrait for several initial condition?
Here is a simple example x0 = [1 2 3]; for i = 1:length(x0) [t,x] = ode45(f,[0 2],x0(i)); line(t,x) end

5ヶ月前 | 1

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How to solve 2 equations with 2 unknowns and for Loop
remove all (i) parts try vpasolve (numerical solver) insteaf of solve (symbolical solver). Your equations can be too complicate...

5ヶ月前 | 0

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How to get XYZ coordinates of a 3D image (.obj)
use get x = get(obj,'xdata');

5ヶ月前 | 0

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What is wrong with my code? I have to find value of x(20 sec), y(20 sec) & z(20 sec). The correct answers are: x(20) = 0.704, y(20) = 0.665, z(20) = 0.246.
mistake

5ヶ月前 | 1

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How to find the area if the traced are in the graph graph?
select points you need use trapz or polyarea y = [40 40 30 20 15 15 22 33 46 56 48 26 20 20]; x = [1 2 3 4 5 6 7 8 9 10 11 12...

5ヶ月前 | 1

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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...

5ヶ月前 | 1

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plotting in for loop
See my recommendations

5ヶ月前 | 0

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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

5ヶ月前 | 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)

5ヶ月前 | 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(...

5ヶ月前 | 0

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

5ヶ月前 | 0

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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...

5ヶ月前 | 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)];

5ヶ月前 | 0

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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...

5ヶ月前 | 1

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

5ヶ月前 | 0

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

5ヶ月前 | 1

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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ヶ月前 | 0

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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ヶ月前 | 0

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

5ヶ月前 | 0

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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ヶ月前 | 0

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

5ヶ月前 | 0

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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ヶ月前 | 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ヶ月前 | 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 = [...

5ヶ月前 | 0

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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...

5ヶ月前 | 0

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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 ==...

5ヶ月前 | 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

5ヶ月前 | 0

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if else statement for tabular data classification
Try for loop

5ヶ月前 | 0

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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...

5ヶ月前 | 0