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Import STL file and convert to Matrix
Try stlread to import geometry Use griddata to interpolate data

9 months ago | 0

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Heatmap - how to get the plotted colors
Just scale values %Exp. Data=[0.216745778875956 0.0122005059399983 0.0162673412533310 0.00149830774701733 0.26338905594...

9 months ago | 0

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1 D Unsteady Diffusion Equation by Finite Volume (Fully Implicit) Scheme
尝试此简单的差异方案：LAM = 0.5;％k*dt/rho/dx^2 n = 20;t =零（n）;t（1，:) = 200;...

9 months ago | 1

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hello can you please help I'm getting this errorIndex in position 2 exceeds array bounds (must not exceed 1). Error in BetaNewmark_MDOF (line 21) xd(:,i+1)=xd(:,i)+(1-b)*dt*x
You are trying to access allements that don't exist. Try this % xdd(:,i), xdd(:,i+1) % WRONG xdd(i), xdd(i+1) ...

9 months ago | 0

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Why do I get "Undefined function or variable" error?
I think your main code should be inside function body

9 months ago | 0

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Answered
Using Heun's Method but Problem With Increment
I think you should use index (i) everywhere. vh variable has two elements after first iteration You trying to assign two elemen...

9 months ago | 0

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Sorting Excel values into new vector
Try this ind = find(abs(data-255)<0.1); % find all '255' numbers ind(end+1) = numel(data)+1; % add last i...

9 months ago | 0

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如何在不近似的情况下从STL导入几何形状？
Here is an example. Read more: 2-D Geometry Creation at Command Line t = 0:0.2:2*pi; % make sure the curve ...

9 months ago | 0

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Answered
I need to arrange the elements as shown in the figure. Can anyone suggest an algorithm for this arrangement of elements?
Use flipud A = reshape(1:12,[3 4]); A' flipud(A')

9 months ago | 0

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Answered
Help to model a phisical problem in Matlab
Why about spline? I placed two points close to each other to manipulate with tangent angle x0 = [0 0 2 3 4 4]; ...

9 months ago | 0

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convert double NaN to string NaN
Try num2str a = {nan 1 nan}; cellfun(@num2str,a,'UniformOutput',0)

9 months ago | 0

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击
You need to pass F into your ode function. Read more: LINK for i = 1:length(F) [t,y] = ode45(@(t,y)beam_function(t,y,F(i))...

9 months ago | 0

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How could I solve this error?
You are using the same variable as in for loop. That why you have an error

9 months ago | 0

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Answered
Finding coordinates in a plot
使用polyxpoly x1 = 0。1:π;%第一曲线日元=罪(x1); x2 = [0 pi]; % straight line for findinf intersection y...

9 months ago | 1

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how to remove horizontal and vertical lines from image?
Here is an attempt. Use bwlabel then to separate each region and analyze I0 = imread('image.jpeg'); I1 = im2bw(I0,0.2); I2 = ...

9 months ago | 0

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Vectorising piecewise quadratic interpolation function
Here is the vectorized version (not tested) xkj0 = x-x'; xkj0 = xkj0.*eye(size(xkj0)) + eye(size(xkj0)); % make diagonal eleme...

9 months ago | 0

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How to center-align uitable cells which are all numerical values?
Here is an example. Read more about sprintf crit1 = {'Some','Key','Words','Here','To','Set','The','Criterion'}; s = sprintf('%...

9 months ago | 0

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How to view the entire 3D object in XY plane and access the values from it
Try rotate [x,y,z] = ellipsoid(); h = surf(x,y,z); rotate(h,angle,dir,origin) z1 = get(h,'zdata');

9 months ago | 0

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如何在两个y轴上绘制
You have 3D data. How do you want it to plot in 2d? s = load('test.mat')

9 months ago | 0

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Replacing certain values in table with NaN based on different conditions
Maybe you need to convert your data into matrix first A = randi(10,5,4) ind = A(:,1) < 5; % have this error when using '...

9 months ago | 0

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how to plot 1x1 struct timeseries having field names cell 1x1 array? The .mat file is a time series data with 3 columns of data with respect to time.
Extrac the data and plo % % Plotting data from the .mat file data = load('THPWM.mat'); fieldnames(data) data.ans x = dat...

9 months ago | 0

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Answered
how can I compare two columns from a differente table that are similar but no equal and then take the difference?
Here is my idea if length(T2.min) > length(T1.xmin) T = T1; else T = T2; end for i=1:length(T.xmin) if abs(...

9 months ago | 1

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2D contour plot considering the boundary of data
Use initmesh to mesh [x,y,z] = peaks(20); t = linspace(0,-pi,20); [xr,yr] = pol2cart(t,2); % round part x1 = [-3 -3 ...

9 months ago | 1

Answered
Create an image (pixels) circle with slices (not from the center) and paint each slice a different color
Here is an example with using matrix r0 = 100; % radius of a circle t = linspace(0, 2*pi, 15...

9 months ago | 0

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Interpolate scattered values on a regular grid with bi-harmonic interpolation method
Create appropriate mesh x = linspace(min(reservoir(:,1)),max(reservoir(:,1)),20); y = linspace(min(reservoir(:,2)),max(reservo...

9 months ago | 1

Answered
Loop in loop only returns results of first iteration
尝试在循环之前先进行vol变量。VOL首次迭代后具有141个尺寸，这就是为什么您有282个元素VOL = ...

9 months ago | 0

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How to place/ define points on a triangulated meshed surface?
Here is another approach, but works only if you don't have points inside: pick a point inside a contour (center) convert data ...

9 months ago | 1

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Answered
How can I make multiple lines on a graph more spaced apart?
Try semilogy Try legend t = 0:0.1:10; plot(t,sin(t),'.r') line(t,sin(t)) line(t,cos(t),'marker','.','color','g') line(t,co...

10 months ago | 0

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How to update main grid with a seperately created subgrid values
Here is an example ind1 = X < min(x(:)) & X < max(x(:)); % indices inbetween smallest and largest 'x' ind2 = Y < min(y(:)) &...

10 months ago | 0

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Answered
Hi all I am trying to plot a second order BVP in MATLAB
Here is the problem

10 months ago | 0