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darova


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844 total contributions since 2019

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Answered
Second derivative from a smoothing spline fit
Here you go n = 50; x = linspace(0,10,n); y = sin(x).*x; d2y = diff(y,2)./(x(2)-x(1))/2; % second derivative ix = ...

circa 17 ore ago | 0

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Answered
How to draw a 2D histogram from a time series?
My proposition A = importdata('temp_data.csv',','); temp = A.data; time = A.textdata; time(:,2) = []; time(1) = []; ...

1 giorno ago | 0

Answered
Seperating labeled array areas using contourf
You want x,y coordinates of boundaries? Or what kind of format it should be? clc,clear load areas.mat I = (image_array); lev...

2 giorni ago | 0

Answered
repeat the iteration with an error using try/catch
My proposition for iTcm=1:nTcm for iScen=1:nScen iEv = 0; while iEv <= nEv iEv = iEv + 1...

2 giorni ago | 0

Answered
cropping a serie of images and save only the cropped part of it
Tri this (not tested) dirName = uigetdir('./', 'Select data folder'); cd(dirName); fname = sprintf('SI380820191011130728_%03...

3 giorni ago | 0

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Answered
2D plot to 3D Graph
I made a simple example for you x = 0:10; y = sin(x)+2; t = linspace(0,2*pi,30); [T,Y] = meshgrid(t,y); [~,X] = meshgrid(t,...

3 giorni ago | 0

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Answered
ode does not converge
I tried tt = [0 1]; options=odeset('RelTol',1e-3,'AbsTol',1e-3);

3 giorni ago | 0

Answered
I need to get counterlines outside the U.S. removed (Ocean/Canada/Mexico)! Se script below.
Use handler options % Call contourm [~,h] = contourm(LatGrid, LonGrid, OzoneGrid); h1 = get(h,'children'); % for ...

3 giorni ago | 0

Answered
Legend of a patch-object with a line in the center
What about this? Too complicated? No? clc,clear cla [X,Y,Z] = peaks(5); p = surf2patch(X,Y,Z); p1 = patch(p,'facecolor','g'...

3 giorni ago | 0

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Answered
how to plot an image and a logical matrix on same plot
Try this ind = mask > 0.8; img(ind) = max(img(:)); imshow(img)

3 giorni ago | 0

Answered
How to create an animation by choosing rows in a matrix to switch with time. Truss simulation
Here is my achievement: i just scaled colors while moving

3 giorni ago | 0

Answered
Finding odd and even values without functions
What about dividing? while 1 a = a/2; if abs(a-1) < 0.01 % if very close to '1' disp('even') ...

3 giorni ago | 0

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Answered
Adjusting the transparency of a contour plot using a gradient of alpha values
Here is my today achievement clc,clear opengl software n = 1000; [X,Y,Z] = peaks(20); % surf(X,Y,Z,'facecolor','none') hol...

4 giorni ago | 0

Answered
Subplot titles on each column.
What about brute force? clc,clear clf subplot 121 plot(0,0) subplot 122 plot(1,1) h1 = annotation('textbox',[0.25 0.95 0....

4 giorni ago | 0

Answered
I want the points that located in a certain polygon
You use different order of lan/lot. Change places in red squares

4 giorni ago | 1

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Answered
How do I remove all fields of a structure that have at least one NaN?
Try rmfield a = [1 nan 3]; bb = [1 2 3]; S.a = a; S.bb = bb; S nms = fieldnames(S); for i = 1:length(nms) f = getfie...

4 giorni ago | 1

Answered
For loop on a 3D matrix to get a range of slices
Use find and sum find(sum(sum(SG,1),2)) % number of nonzero slices

5 giorni ago | 0

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Answered
Gantt Chart on Matlab
Use only 3d column A = [ 1 0 11 2 11 24 3 24 40 4 40 60 5 60 80]; bar(A(:,3))

5 giorni ago | 0

Answered
How can I add a column of data to a matrix
Try my solution A = [A b(:)]

5 giorni ago | 0

Answered
Symbolic Calculation to Numeric value for limit of an integral
Look at your signal t = linspace(0,100); signal = @(t) -3*(sin((t-5/2)/3)); area(t,signal(t)) axis equal It never ends! Int...

5 giorni ago | 0

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Answered
Creating a matrix from spaced out lines of another matrix
Try this dx = max(x)-min(x); ix = round((x-min(x))/max(x)*2) + 1; % result 1 2 3 ind = cell(3,1); for i = 1:length(ind) ...

5 giorni ago | 0

Answered
How can I put an integral inside a for loop when the bounds depend on the loop's variable?
Here is an example for integral3 According to this integration is done from z to x You have only y. Looks like x=x(y) in yo...

5 giorni ago | 1

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Answered
How to remove or exclude the intersecting part from two intersecting or overlaping spheres using Matlab?
Here is what i invented ix1 = (xc1-x2).^2+(yc1-y2).^2+(zc1-z2).^2 < R2^2; ix2 = (xc2-x1).^2+(yc2-y1).^2+(zc2-z1).^2 < R1^2; s...

5 giorni ago | 2

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Answered
Using IF condition with ODE
Maybe you don't need event function for this case. I just add persistent variable to your ode function function main clear fun...

5 giorni ago | 0

Answered
how plot a correct interpolation with surf plot?
It happens because of different scales of data. Don't know why MATLAB get confused about it (even linear interpolation) scale...

6 giorni ago | 0

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Answered
"dsolve" gives some extra terms in the solution
Here is comparison of solutions. See script inside

6 giorni ago | 0

Answered
Interpolating scattered data within a shapefile/worldmap
Here is my effort. Am i succeeded? S = importdata('CP_c.csv'); A = S.data; x = A(:,1); y = A(:,2); z = A(:,3); xx = linspa...

7 giorni ago | 0

Answered
How can I plot two variables with the line color varying as the third variable?
Use patch x = linspace(0,10); y = sin(x); c = jet(100); n = length(x); fv = [1:n-1;2:n]'; patch('faces',fv,'vertices',[x; ...

7 giorni ago | 0

Answered
Voronoi Diagram in Dashed Lines
Try to grab only handles of voronoi lines set(h(2:end),'linestyle','--')

7 giorni ago | 0

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Answered
How to use normal, length, width, and center coordinates to create a rectangular surface in three dimensions?
Create Left vector using cross product p0 = [X Y Z]; % origin p1 = p0 + height/2*Up + width/2*left; p2 = ... % do al...

7 giorni ago | 0

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