Walter Roberson

Last seen: Today | Actif depuis 2011

Followers: 58 Following: 0

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I am currently in the middle of moving, so I am not around very much.

Programming Languages:
C, MATLAB, Shell, Perl, Fortran
Spoken Languages:
English

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How can I get splines subject to constraints?
You are trying to get vpasolve() to invent functions that satisfy certain purposes, trying various forms of f until it satisfies...

environ 3 heures il y a | 0

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Importing Point cloud to overlay on solid object
You probably need to use scatteredInterpolant . In some cases the scattered data is an "unraveled" rectangular grid; in such cas...

environ 18 heures il y a | 0

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How to get variable data depending on the value from another column. In an Array
corresponding_values = Array(ismember(M, Array(:,1), 2)); However, the comparison between M and Array(:,1) that will be done is...

environ 18 heures il y a | 1

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Question solve(eqn)
syms a0 a1 a2 a3 a4 a5 v = [0 2 4 6 8 10] f = [0 2.9 14.8 39.6 74.3 119] f1 = a0 + a1*v(1) + a2*v(1)^2 + a3*v(1)^3 + a4*v(1...

1 jour il y a | 0

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How to get 'Live Editor Evaluation Helper' .m file name from live script through another live script?
When sub.mlx is called through main.mlx though, the same Live Editor file name is returned twice, which is obviously incorrect. ...

1 jour il y a | 0

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find the minimum of polynomial.
syms a b c R f = a*R^2+b*R+c critical_points = solve(diff(f, R), R) value_at_critical_points = subs(f, R, critical_points)

1 jour il y a | 0

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can anybody help me to find what is wrong in the following code?
The fzero() function requires a function handle. For symbolic work use vpasolve() syms p f=2-ellipticK(p) x0=0.1 a = vpasolv...

1 jour il y a | 0

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ubuntu에 Matlab 설치가 안되요.
It seems to be a problem with Ubuntu 14 https://askubuntu.com/questions/366556/13-10-xrdp-problem-with-gnome-fallback

2 jours il y a | 1

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When running imagesc, how can I extend the image coverage on my graph?
imagesc(station2.TemperatureITS90DegC,station2.DepthsaltWaterMLat,station2.TemperatureITS90DegC) When you call imagesc() like t...

2 jours il y a | 0

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How do I make this bisection function recognize a bounce on a graph?
Suppose you have something like syms x f = x^3 - 2 * x + 5; tiledlayout nexttile fplot(f, [-5 5]) nexttile fplot(f, [-2 3...

2 jours il y a | 0

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how to Specify the arguments of imfilter in codegen function ? how to call it with the right parameters ?
To call C code from inside MATLAB, you use loadlibrary followed by calllib

2 jours il y a | 0

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Plot the following equation using MATLAB
Y=3x³-26x+10 MATLAB has no implied multiplication anywhere. You cannot use, for example, 26x and have that be understood. You n...

2 jours il y a | 0

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I am trying to create a function but continue to get this error: function score = compute_iss_score(a) ↑ Error: Function d -could someone tell me what I am doing incorrectly?
That code would be an error if the file the script is stored in is named the same thing as the function defined in the script, c...

2 jours il y a | 0

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ode45 Event function does not trigger correctly with nested function
Use odeset() to set NonNegative for the component; https://www.mathworks.com/help/matlab/math/nonnegative-ode-solution.html

2 jours il y a | 0

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Open panel in new window with script
Create a figure() or uifigure(), setting its DockedControls property to 'off' . The resulting figure will not be docked. Create...

2 jours il y a | 0

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contourf and Contour in the same figure with 2 different sets of data. Colors of contourf plot of data 1 are changed when using contour with data 2.
This is normal. You are using contourf() and contour() on the same axes. There is only one CLim (color limit) property per axes....

2 jours il y a | 1

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MATLAB code not running
The most likely cause would be if you had a third-party function named inv Check with which -all inv Experiment with using ...

2 jours il y a | 0

| A accepté

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elseif that goes through previous statements but with different parameters
Maybe [~, bin] = ismember(e(t), [1 2]); if bin > 0 if rand() < p5(siminfo1state(t,j),siminfo2state(t,j)) if rand...

3 jours il y a | 0

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I'm trying to find solutions to variables in a system of non linear eqations, that represent a geometrical puzzle.
syms x y z S2 S h H R R2 AA t t2 OJ b r eqns = [ S==x+y+z, y^2==4*R^2+4*(R2)^2-8*R*(R2)*cosd(b), x^2==r^2+h^2, r/R==h/H, r...

3 jours il y a | 1

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syms to another .m file
As @Torsten says, you can just pass symbolic expressions as parameters. However, you need to be careful about assumptions. All ...

3 jours il y a | 0

| A accepté

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Simulink Threshold with action
Use a "While Iterator" block; https://www.mathworks.com/help/simulink/slref/whileiterator.html Initialize the input signal. ...

3 jours il y a | 0

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Speed up this bottleneck line of code
n = 10000; m = 5000; k = 20; tic a = rand(n,m); b = rand(n,m); c = rand(m+k,n)*1.1-0.1; toc ind1 = repmat([ones(1,m/...

3 jours il y a | 0

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Integrating a very long expression containing symbolic values
How can I integrate such an expression? You can wait however many months it takes. I would point out that you have not restric...

4 jours il y a | 0

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Curly braces within a subscript?
text(0,1,-0.075,'\fontname{Times} \fontsize{14}\bf \it e_{\{2\}}');

4 jours il y a | 0

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How to make ode45 store/return only results of every n-th time step to reduce memory use?
Set your tspan to be a vector of three elements (more correctly, use more than 2 elements). When you call ode45(), set it up to...

4 jours il y a | 1

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I keep getting an error message in my code
plot(t,data_na(i,:),'color',col(:,i),'LineWidth',2); My guess is that you need plot(t,data_na(i,:),'color',col(i,:),'LineWidth...

5 jours il y a | 0

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I am working on a program for class and I am having trouble understanding what the problem is asking. Can someone advise me on how I should write the code?
Create a program that asks the user the following: which lot are you using? You can use input or questdlg or inputdlg or menu o...

5 jours il y a | 0

| A accepté

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MATLAB Indexing type dependence (bug?)
eps(single(67347456+50)) single precision numbers are 8 apart by the time of 67347456

5 jours il y a | 0

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Diferent answers to same cmd
A=[-.01 .1 0 32.2;-0.4 -.8 180 0;0 -.003 -.5 0;0 0 1 0] Your screen image shows you using -32.2 rather than 32.2

5 jours il y a | 1

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loading multiple.im7 images into Matlab using readimx function
filename = 'C:\....\n_2000_075'; im7_files = dir([filename,'/*.im7']); imgNum = length(im7_files); ...

5 jours il y a | 0

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