Jan
Last seen: 1 giorno ago
12.610 total contributions since 2009It 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.
Jan's Badges
Your submissions were downloaded 250 or more times in a month
Awarded to Jan on 01 Nov 2019
Your submission is selected as "Pick of The Week"
Awarded to Jan on 09 Oct 2019
Publish your first comment or rating
Awarded to Jan on 09 Oct 2019
Your submissions received 25 five star ratings
Awarded to Jan on 09 Oct 2019
Publish your first submission
Awarded to Jan on 09 Oct 2019
Reach 25000 reputation points
Awarded to Jan on 14 Aug 2018
Answer 50 questions that were unanswered for more than 30 days
Awarded to Jan on 14 Aug 2017
Contribute at least one answer each month for 36 consecutive months
Awarded to Jan on 20 Jul 2017
Accept 50 answers given by other contributors
Awarded to Jan on 20 Jul 2017
100 of your answers have been accepted
Awarded to Jan on 20 Jul 2017
Provide your first answer ever to someone else's question
Awarded to Jan on 20 Jul 2017
Like a problem or solution
Awarded to Jan on 27 Jan 2012
Comment on a problem or solution
Awarded to Jan on 26 Jan 2012
Solve a problem for the first time
Awarded to Jan on 26 Jan 2012
I have two 3d points, A(1,0,0) and B(0,1,0). And I connect these two points as a line AB. How to divide this line into 10 equally segments and get their coordinates?
A = [1, 0, 0]; B = [0, 1, 0]; ab = B - A; v = linspace(0, 1, 10).'; C = A + v .* ab
1 giorno ago | 0
how do i substract the first value from the last one on an array taking out zero values?
Get the corresponding indices: first = find(X, 1, 'first'); last = find(X, 1, 'last'); Result = X(last) - X(first)
3 giorni ago | 0
| accepted
how to solve this error: Error using ' TRANSPOSE does not support N-D arrays. Use PAGETRANSPOSE/PAGECTRANSPOSE to transpose pages or PERMUTE to reorder dimensions of N-D arrays
What is the size of u10 ? u10 = double(ncread(nc_windfile, 'u10')) ; size(u10) If it has more than 2 dimensions, u10' is not ...
3 giorni ago | 0
| accepted
How to calculate each result of f(x) in the nested for loop?
This is correct, but not useful: j = sqrt(-1); i and j are defined as imaginary units as default already. But you see the ambi...
4 giorni ago | 0
input and output functions
Name your function fibseq. So call it fibseq.m, not "Fibseq.m". The case matters in Matlab. It will have one input n and one ou...
5 giorni ago | 1
| accepted
How to get a function from user without knowing its symbols
See how e.g. fzero and ode45 solves this problem. Here the function has 1 oder 2 variables which must be provided in a specific ...
5 giorni ago | 0
hObject is not created when running GUIDE *.m file - what can be done?
The m-files created by GUIDE are not compatible with other Matlab versions You can expect such troubles.
5 giorni ago | 0
| accepted
Break loop with button click GUI [if button is pressed] [Both plot and button are in different functions]
function main FigH = figure; ButtonH = uicontrol(FigH, 'Style', 'PushButton', 'String', 'Stop', 'Call...
6 giorni ago | 1
| accepted
Why Index exceeds the number of array elements (1) if I change the input order in the anonymous function?
ode45 calls the function to be integrated as f(t, Y) . So the time must be the first input.
6 giorni ago | 1
| accepted
Extract rows from 2 different matrices with different dimensions using If statement
if AR(:,5)==n; This is a vector in the condition. Therefore Matlab inserts an all() implicitly, because conditions of if statem...
6 giorni ago | 1
| accepted
inputdlg does not work Matlab 2020a
User the debugger to find out more details. Type in in the command window: dbstop if caught error Now run the code again and c...
6 giorni ago | 1
if statement/numel (A)
These condition does not do, what you expect: 1<=(i + a)<=numel(A) 1<=(i - a)<=numel(A) They are evaluated from left to right...
6 giorni ago | 0
How to find euclidean distances between cell entries of two RGB matrices?
A = rand(47, 47, 3); B = rand(1, 456 3); AB = reshape(A, 47*47, 1, 3) - B; Dist = vecnom(AB, 2, 3); And now you want to fi...
13 giorni ago | 0
How do I use characters with an if statement?
Prompt = 'Please press any key to roll the dice, press Q or q to quit program: '; str = input(Prompt, 's'); if strncmpi(str...
26 giorni ago | 0
Random draw without re-delivery in a loop
What are your input data? A list of files stored in a folder? (As usual: please explain this instead of letting the readers gues...
circa un mese ago | 0
| accepted
search in large cell file
In the loop all lines are stored in the cell an the loops stops, if the last one was not a CHAR. This means, that the last eleme...
circa un mese ago | 1
| accepted
Question
MEX api and interleaved complex arrays
Does MATLAB store complex data in interleaved format since R2018a? If you compile a MEX function with the -R2018a flag, you can...
circa un mese ago | 1 answer | 0
1
answerReversible matrix in matlab
You want to identify a "regular matrix and non-singular matrix". Then testing only, if it is square and not a zero matrix ist no...
circa un mese ago | 0
Calculation precision changed in 2020b?
The ACOS function is numerically instable at 0 and pi. SUM is instable at all. A trivial example: sum([1, 1e17, -1]) .There are...
circa un mese ago | 1
Why stock DOT function is suboptimally implemented
Just a comment: Under Matlab 2018b, Core i5-3320M CPU @ 2.60GHz: Elapsed time is 0.249669 seconds. dot(z,z) Elapsed time is ...
circa un mese ago | 0
How to concatenate matrices to calculate mean
As Steven has mentioned already, this is the main problem: "I have 40 matrices DJF1979_1980_125 to DJF2019_2020_125" Do not us...
circa un mese ago | 0
Submitted
ScaleTime
Fast linear interpolation of equally spaced data (C-MEX and M)
circa un mese ago | 17 downloads |
How to read data from a file into cell array keeping indents undisturbed
% Import file: Str = fileread('file.ext'); % Remove trailing line break to avoid appending an additional empty line: if ~is...
2 mesi ago | 0
| accepted
Not enough input arguments error
What about replacing: for j= 1:N if x(j)<beta1 & x(j)>beta2 f(1,j)=f02(x(j)); end if x(j)>beta1 & x(j)<...
2 mesi ago | 0
command window no output
Check if you have shadowed the display function: w = cellstring(which('display', '-all')); fprintf('%s\n', w{:}) What do you ...
2 mesi ago | 0
Find string in the special file
S = fileread('R2_AS - Copy.txt'); i1 = [strfind(S, 'Szenario'), Inf]; i2 = strfind(S, 'has been created.'); width = numel(...
3 mesi ago | 0
Namelengthmax value in different operating systems
The value of namelengthmax depends on the Matlab version only. It is the same for all operating systems. Identifiers can have ...
3 mesi ago | 0
Syntax Error using Fcn Block
You need round parentheses for indexing, not square brackets: (1/Mus)*(Ks*(u[3]-u[4])+Ct*(u([7]-u[2])+Kt*(u[6]-u[4])-u[5]) % =...
3 mesi ago | 0
| accepted
how to compute the number of image from subfolder ?
fullfile(('.\databasee\')) is exactly the same as its input: '.\databasee\'. The unnecessary parentheses are confusing only. To...
3 mesi ago | 1
| accepted
Different machine precision for scalars and vectors?
The only difference is the display in the command window. Matlab tries to display vectors in an abbreviated format, execpt if yo...
3 mesi ago | 1
| accepted
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
Select web siteYou can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)