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Jan


Last seen: Today
12,947 total contributions since 2009

It is easier to solve a problem than to guess, what the problem is.

Questions about FileExchange submissions are welcome - get my address from the code. I do not answer mails concerning questions in the forum.

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Contributions in
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Answered
How to definie FontSize for Ticks on Axes when printing figures to files
Did you try export_fig already?

10 hours ago | 0

Answered
Undefined function or variable 'Throughtput_Cell'.
The error message is clear: There is no function in Matlab's path, which is called "Throughput_Cell.m". Do you assume, that the...

10 hours ago | 0

Answered
How to sort a table based off of values in one row in MATLAB
sortedTable = sortrows(SmallerTable, {'GroupB'})

11 hours ago | 0

Answered
float to binary ?
Are you sure that there is a rounding? Or is it the display in the command window only? A = 0.569546; B = float2bin(A) C = bi...

11 hours ago | 0

Answered
Why is unique() giving me the matrix after eliminating the common rows for these two matrices?
If you use a matrix as input to unique, a vector is replied. So if you matrix is not changed, it cannot be an output of unique()...

11 hours ago | 0

Answered
Index exceeds the number of array elements (1)
With some guessing: EA is a scalar: EA = 0.0015*200*(10^9); Then you cannot access elements of EA > 1: for k = 1:NE ......

11 hours ago | 0

Answered
No iso file in downloaded zip file?
Yes: The downloaded ZIP file contains the contents of the ISO file. There is no reason to include an additional ISO file. Why do...

11 hours ago | 0

Answered
How to Find Index of Repeated Elements in a Vector?
x = [7, 22, 16, 20, 22, 3, 6, 22, 5] index = 5; a = x(5) index = find(x == a) % Or: [UniqX, iX, iUniqX] = unique(x)

11 hours ago | 1

| accepted

Answered
Sort tables within a cell by size
Try this - I cannot check it, because I do not have your input data: Len = cellfun(@length, C); [~, index] = sort(Len); C = C...

14 hours ago | 0

| accepted

Answered
How to create column vector by the transpose?
The quote ' is not the transpose operator, but the complex transposition. To be exact the tranpose operator is .' including t...

1 day ago | 1

| accepted

Answered
How to bring Data in usable form?
To be able to guess, what "usable" means, we need to know, what do you want to use the data for. Maybe you should convert the ti...

1 day ago | 1

Answered
When using ODE45, can I specify a variable to assume two different values during the timespan?
ODE45 is designe to integrate smooth functions only. To change a parameter you have to integrate in chunks: tSwitch1 = 10.0 tS...

1 day ago | 0

Answered
Loop to iterate ode45 function
figure; axes('NextPlot', 'add'); for e = 0:0.2:1 [t, x] = ode45(@(t, y) F(t, y, e), [0, 20], [0, 1]); plot(t, x(:,1)...

1 day ago | 0

| accepted

Answered
Find intersection between two curves
The intersection is the location, where both functions have the same value. Then their difference is 0. You can use fzero with ...

1 day ago | 0

| accepted

Answered
How to downsample cell arrays based on specific criteria?
It would be much easier to reduce the number of points before you convert the nermical data to cell arrays. See my answer in th...

1 day ago | 1

| accepted

Answered
Why is the upper axis grid not visible after exporting to .eps image
Did you enable the box? set(gca, 'Box', 'on')

1 day ago | 0

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Answered
Finding Maximum Iterations for False Position Method
The rule of thumb is to limit the runtime to a duration, the user can bear. So waiting for an hour to detect, that the algorithm...

1 day ago | 0

Answered
How can compute sequential occurrence of elements in a vector
x = [ 0 0 0 0 1 1 1 1 1 0 0 0 2 2 2 2 0 0 0 0 0 3 3 3 3 3 3]; change = [true, diff(x) < 0, true]; index = diff(find(change))

1 day ago | 1

| accepted

Answered
How can I transmit multiple variables to a function in the form of a single array?
You can use a struct: S.a = a; S.b = b; ... [output1,output2] = multi_input(S) function [output1,output2] = multi_input(S...

1 day ago | 0

Answered
HOW CAN I SOLVE THIS?
What are the possible numbers in IEEE 754 floating point values between 1.0 and 2.0? x = 1.0 + k * 2^-52 with k = 0, 1, ... ...

2 days ago | 0

Answered
Generate cell of random numbers with same size arrays
Creating a large array only to split it into parts needs more RAM than creating the random matrices in parts directly: C = cell...

2 days ago | 1

| accepted

Answered
How can I record mouse clicks (left and right) with coordinates and time?
You can emulate this with WindowsAPI. Setting the window completely invisble does not work, because with Alpha=0.0 the mouse eve...

3 days ago | 0

Answered
Butterworth Bandpass Filter Design
See https://www.mathworks.com/matlabcentral/answers/273811-butterworth-filtering-with-bandpass-and-3-order

3 days ago | 0

Answered
num2str format
What does "I get a number from an API: 8.1784e+17" mean? Is this a char vector, string or a UINT64 or double scalar? In the last...

3 days ago | 0

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Answered
How can I get a loop to process all ".avi" files in a folder, then produce the corresponding ".txt" and ".png" file?
function FileExample() Folder = uigetdir('','Select Input-folder'); FileList = dir(fullfile(Folder, '**', '*.avi')); % Select...

3 days ago | 0

Answered
Array indices must be positive integers or logical values.
Nn = 1:2:30; Nn(i) = 60; Without a further definition, i is a constant with the value sqrt(-1). So which element to you wan...

3 days ago | 0

Answered
Multiply two terms at a set distance apart from each other in an array
The loop method: array = rand(1, 950); for i = 1:950 - 23 v = array(i+23) * array(i) end Stephen's vectorized approach ...

4 days ago | 0

Answered
How to deal with nested arrays where the columns and rows are in different dimensions?
I do not undestand why "Text Nr.1" appears multiple times. If this is a typo only: In = {your cell}; Out = cell(size(In)); f...

4 days ago | 1

| accepted

Answered
multiple default files for uigetfile
Under Windows this works: % Select multiple M-files: [File, Folder] = uigetfile('*.m', 'Choose files', '', 'Multiselect', 'on'...

4 days ago | 0

Question


PARFOR in real applications
I've installed the Parallel Computing Toolbox for some experiments with my code. To my surprise none of the codes run faster wit...

5 days ago | 0 answers | 0

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