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# darova

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820 total contributions since 2019

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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...

environ 9 heures ago | 0

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

1 jour ago | 0

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...

1 jour ago | 0

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; ...

1 jour ago | 0

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

1 jour ago | 0

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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...

1 jour ago | 0

Fill in missing NaNs
Use bwlabel A1 = isnan(A); % find NaN [L,n] = bwlabel(A1); % label each re...

1 jour ago | 1

Need matlab coding for the given c program
try this i = 1; a{1} = '1'; while ~strcmp(a(i),'&') str = input('','s'); i = i + 1; a{i} = str; end

1 jour ago | 0

How to pick an answer from solver for further calculations
Use logical operators ix = 0<Xi && Xi<1; x1 = Xi(ix);

1 jour ago | 0

Question for color set in colorbar
Yes, there is a way. Use colormap cmap = hot(100); colormap(cmap(30:end,:)) % i use only last 70 values because first 3...

1 jour ago | 0

Deleting overlapping segments between two vectors
Use bwselect cross = a.*b; ix = find(cross); % cross indices ia = bwselect(a,ix,1+ix*0); % find regions in ...

1 jour ago | 0

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How Can you redesign this code? Same result but different structure
You can remove some constants from for loop to speed up your code This part can be shorter and vectorized % for i=1:p % ...

2 jours ago | 0

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How can I plot an equation to its time lag?
Use for loops c(1) = w + (1-b)*(1+r)*a0 + D; for t = 1:n-1 c(t+1) = (1+r)*(c(t)-ch)*b + ch; end plot(1:n,c)

2 jours ago | 0

Fullfile function gives me a false reading with the slash symbol
Try this Or you can remove slash symbol fileToRead(end-5) = [];

2 jours ago | 0

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Memory efficient vectorization of a for loop
Store values manually like sparse % preallocation? irow = []; icol = []; iplane = []; for i = 1:... % do stuff ...

2 jours ago | 0

Change in velocity equation with explicit method
Here is what i think about this question for n = 2:length(t) if m(n-1) > me % if rocket has fuel dm = ...

2 jours ago | 0

How do i store value in a array from for loop?
I give you simple example for a start n = 10; y = zeros(1,n); for i = 1:n-1 x = x + dx; dy = sin(x); y(i+1) = ...

3 jours ago | 1

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How can I plot a system of nonlinear ODEs with an added term used to model chemotherapy?
Here is an idea: function main t1 = 0.01; % start period t2 = tau-0.01; % end period hold on ...

4 jours ago | 0

Create Bar Charts with different number of groups for each iteration.
Try NaN for f=1:nBFonds figure(f) Var = nan(1,26); pInd=transpose(peersInd==f); Var1 = [TotRetB(1,f);TotRet...

4 jours ago | 1

Is griddedinterpolant omits NaN?
You can find out by yourself [X,Y] = meshgrid(0:10); Z = 0*X; Z(5:7,5:7) = nan; surf(X,Y,Z,'edgecolor','none') [X1,Y1] = ...

4 jours ago | 1

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Index in position 1 exceeds array bounds (must not exceed 1)
i am sure that indexing is right

4 jours ago | 0

Produce equality matrix based on elements in vector.
Try bsxfun % make all combinations using bsxfun C = bsxfun(@minus,b(:),a(:)'); % b - rows, a - columns [i,j] = find(~C);...

4 jours ago | 0

How to sum specific elements in a row of a matrix
try this A = rand(256); srow = 0; for i = 1:16:size(A,1) srow = srow + sum(A(i:i+3,:),1); end

4 jours ago | 1

How to calculate the arterial wall thickness on an image?
You should have some scale parameters Here is idea: human = 45 * 3/100 = 1.35 [m]

5 jours ago | 0

Generate a random orthonormal vector (i) to a given unit vector and (ii) with n-2 predetermined components
What about fsolve b = 1; c = 1; v1 = [-0.52 0.72 -0.19 0.37 -0.18]; v2 = @(x)[x b c 0.45 -0.09]; F = @(x) dot(v1,v2(x)); r...

5 jours ago | 0

Pass out a dependent variable from ode15s without taking the derivative of it
You should calculate rr variable after solving ode45 An example function main [t,u] = ode45(@f,[0.1 3],[1 1]); u1 = u(:,1); ...

5 jours ago | 0

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PLOT IS NOT SHOWING ANYTHING
Use subplot to draw curvees in separate windows subplot(2,1,1) plot(T,Y(:,1),'r') subplot(2,1,2)] plot(T,Y(:,2),'r')

5 jours ago | 0

fsolve stopped because the problem appears regular
Try this [X,Y] = meshgrid((-6:0)*1e34, (-10:10)*1e34); Z1 = X*0; Z2 = X*0; for i = 1:size(X,1) for j = 1:size(X,2) ...

5 jours ago | 0

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