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Stijn Haenen


41 total contributions since 2019

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Answered
Draw horizontal lines using for loop on set of images
Maybe this works: Color=[255,255,0]; %color in 8bit, [255 255 0] is yellow width=3; %width of the line Line_Y_coor=[500 60...

4 jours ago | 1

Answered
Mean of certain elements within a matrix
I think this will work: for i=1:371 Mean_i(i)=mean([matrix(i,5:6),matrix(i+1,2:4)]); end

4 jours ago | 0

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How do I plot error bar at only one location ?
just plot first without errorbar and than with errorbar for only the 4th value: plot(u,v,'b') hold on errorbar(u(4),v(4),err(...

4 jours ago | 0

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Answered
How to use loops to plot add graphs to a plot depending on checkbox selection
Which matlab version do you have? I have 2019a and it works. What do you see if you typ in the command window: fig.Children ...

7 jours ago | 0

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How to draw multiple rectangular diffraction pattern
Somthing like this? clc clear all lambda=632e-9; k=(2*pi)/lambda; a=1e-3; b=4e-3; d=20e-3; Io = 100.0; R = 1; Y = (-0.4e-...

7 jours ago | 0

Answered
how to randomize a vector as fast as possible
this is finished in 28 sec, i dont know how fast other methods are. tic Vec=1:125000; numelVec=numel(Vec); new_Vec=zeros(1,n...

7 jours ago | 0

Answered
How to use loops to plot add graphs to a plot depending on checkbox selection
I think you can use this script as an example: close all fig = figure; checkbox_USD = uicontrol(fig,'Style','Checkbox','Strin...

7 jours ago | 0

Answered
How to plot? Having a issue.. Need to plot evolution of the norm of a symbolic matrix for t=0 to 1.
Your PHI is a 4x4 matrix, do you want to plot 16 function against t? That can be done with: syms t PHI=[ 1, t, t/3 - (2*exp(...

8 jours ago | 0

Answered
How to use loops to plot add graphs to a plot depending on checkbox selection
You can get the value of the checkbox number i with v=fig.Children(i).Value So maybe you can make a for loop like this: figu...

8 jours ago | 0

Answered
How to plot? Having a issue.. Need to plot evolution of the norm of a symbolic matrix for t=0 to 1.
you should use fplot or ezplot (https://nl.mathworks.com/help/symbolic/ezplot.html) to plot a 'sym' variable.

8 jours ago | 0

Answered
How to plot Gantt Chart for job shop scheduling?
Do you mean something like this: Number_of_tasks=20; width=200/Number_of_tasks; startDates=1:20; endDates=3:22; for i=1:Num...

12 jours ago | 0

Answered
Plotting Terminal velocity Vs particle diameter
With this script you overwrite vt and dp every loop, so at the end you only have 1 single value for vt and dp and you cannot plo...

12 jours ago | 0

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Answered
Loop is not running in Matlab
There are some errors in your script: i=0.0015:-0.0015:0.00001; Only gives the number 0.0015 as output, if you want that i goe...

17 jours ago | 0

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Answered
Random shuffle vector such that all elements fall in new index positions
Try this: v=[1:100]; %your vector List=1:numel(v); for i=1:numel(v) newList=List; newList(i)=[]; newpos=datasa...

17 jours ago | 0

Answered
Detecting Entire Column has the same integer value
Try this: if a(:,1)==a(1,1)&mod(a(1,1),1)==0 Ans=[1 0]; else Ans=[0 0]; end

19 jours ago | 0

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Answered
Polyfit is giving incorrect coefficients for correct plot fit.
If I run this script i get a good fit, see image N=10:10:60; t1 = [3.5 6.5 10 12.5 15.5 19]; t2 = [3 6.5 10 13 16 20]; t3 = ...

19 jours ago | 0

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Answered
nccreate overwrite existing file
Have you tried this: if exist(filename) delete filename end nccreate.....

19 jours ago | 0

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Answered
How Can i write a function that takes a structure array and returns this array with bubble sorting
Maybe this will work: ages=[structurearray.age]; [a,b]=sort(ages); newstructurearray=structurearray(b); The used structure i...

19 jours ago | 0

Answered
year function does not read properly
year(input) tells you in which year the day of the input is, where the input is the day number, starting from first of january 1...

22 jours ago | 0

Answered
Extracting a value from a 3D table
Sure, In the first line "Num_nan=find(isnan(Table));" you get the positions of the NaN, but this is just a number. For example,...

22 jours ago | 0

Answered
How to solve differential movement equation?
I dont think you can solve this, a relation between x and y, or x and t, or a direction of the force is required.

22 jours ago | 0

Answered
Extracting a value from a 3D table
Maybe this works, for output(a,b,c): Num_nan=find(isnan(Table)); c=floor(Num_nan/(81*81))+1; b=floor(rem(Num_nan,81*81)/81)+1...

22 jours ago | 0

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Answered
How to reuse the same format
Maybe this will work: a='%7.0f'; fprintf(strcat('defaults->',repmat(a,1,9),'\n'),header);

22 jours ago | 0

Answered
Guys, i have no idea how to proceed with these two questions, would you please help me out, many thanks guys.
2.3: syms k vpasolve(det(R-k*i3)==13,k)

22 jours ago | 0

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Answered
Optimize evaluation of triple infinite series using FOR loops
Maybe you can compute p2vec{i,j} outside the k-for loop and multiply it inside the for loop with the k-factor.

environ un mois ago | 0

Answered
Callback function not forwarding the variables.
If you have the edges of the square you can maybe use this example to get the number of points inside the square. x=1:100; y=1...

environ un mois ago | 0

Answered
How to limit the movement of a rectangle?
maybe this will work: roi = drawrectangle('Position',p ,'Color',[1 0 0]); t=0; while t<1 pause(0.15);pos=get(roi,'positi...

environ un mois ago | 0

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Answered
How to limit the movement of a rectangle?
Maybe you can use the function: get(roi,'position') But i'm not sure what you want.

environ un mois ago | 0

Answered
How to setup common file in .XML or .txt format to declare all variables globally for using it in simulink and stateflow?
Creating a txt file can be done with: a=10; b=20; c=30; d=40; FP=fopen(sprintf('textfile.txt'),'wt'); fprintf(FP,'variabl...

environ un mois ago | 0

Answered
How to save data stored in a cell for easy transfer to excel?
You can use the function writematrix: writematrix(Data,'filename.xlsx')

environ un mois ago | 0

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