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Jakob B. Nielsen


Last seen: Today
54 total contributions since 2019

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Answered
while doing curve-fitting for custom equation, error is occuring??
If your input data contains or spans x=0, your first logaritm will not be defined. In addition, if your x exceeds 1, your second...

4 days ago | 0

Answered
Delete 335 values every 335th time.
It is entirely possible that there is a much easier way to go about this - but here is nevertheless a way. I've made a for loop ...

4 days ago | 0

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Answered
How can I check if the next generated row has no repetitions in the same columns in the previous row using a while loop
Your problem is that the check you add in the end, (s (:, j)) ~ = 1, examines if the sum in column j is more than 1 - but the in...

4 days ago | 0

Answered
Calculating grades in a while loop
You don't need a while loop for that - it is easy with logic indexing, like so: score=[82 75 78 82 90 87]; A=score(score>=90)...

4 days ago | 0

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How to plot an ultrashort light pulse
A true monochromatic laser beam can never achieve ultrashort pulse lenghts. Ultrashort pulses make use of interference of light ...

11 days ago | 0

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How to plot only positive values?
You can use logical indexing. posY=Y(Y>0); posX=X(Y>0); %the X values for which it is true that the value of Y in the corres...

11 days ago | 0

Answered
How to create a matrix for plotting surf(x,y,z) from multiple .dat files?
I hope your data files are in order! :) First, get arrays of your filenames, and then create a loop withinwhich you use the fu...

11 days ago | 0

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Change for loop stepsize
I think, when you create the for phaseerror = 0:stepsize:limit loop, you have already determined your increment - you cannot cha...

12 days ago | 0

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How to plot multiple plot in the same figure inside for-loop
If hold on is used, matlab will add plot commands to the active axes (or active figure, if you will), unless you specify otherwi...

12 days ago | 0

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Answered
Make gui for function CROSSIT
Try to read your error. "There is no 'srting' property of the 'uicontrol' class." Does that look right to you? Its a simple ty...

12 days ago | 0

Answered
i want to find the values in the x axis for the respective y axis
You seem to do your autocorrelation in steps of 1. What is the precision you are after? Is it simply "the first time SWH drops b...

13 days ago | 1

Answered
How to calculate some statistical moments for every cell of a cell array?
A good way to troubleshoot is to insert a keyboard line - it pauses the code, and allows you to see "what matlab sees" mid-execu...

13 days ago | 0

Answered
How to take an integer input from matalab file and put it in app designer as an enter box number ?
Lets call your app GUI. First define a text box on the GUI; TextEdit=uicontrol('Style','Edit','Units', 'normalized','string'...

13 days ago | 0

Answered
Import data TXT File to Matlab
You will want to clean up your files a little before importing them; Matlab can understand ; , : tabs and spaces as delimiters, ...

13 days ago | 0

Answered
Creation of a loop code
This partition function might help. Call plist=partitions(100,1:100,[],3); and you will get a 833x100 matrix where the sum of th...

14 days ago | 0

Answered
How to write function with multiple input and output (Function for Optimization based on Experimental data)
a(i) wants to assign a single value into a vector, a, on the ith index. But alpha(:,1) refers to every value iin the first colum...

14 days ago | 0

Answered
Confidence intervals for fitlme
If you look at the linear mixed model documentation you should be able to extract the confidence interval values from lme.Coeffi...

14 days ago | 0

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Plots at cut off frequency
You could look at a function to find the frequency value of your peak, and then set your x limit to exclude that region. For exa...

14 days ago | 0

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Answered
3D matrix (I guess is an indexing question?)
matr(ct1,ct2,:)=[1:(k-1) (k+1):9 0]; Is this what you want?

14 days ago | 0

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Answered
Creating a Loop for my work
There is indeed! A basic loop runs through integer numbers that you specify. You can then convert these numbers to strings - whi...

17 days ago | 0

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Answered
Setting up and plotting functions
It does, indeed, need to be given some inputs. Matlab has no way of knowing what a, b, c and x are. function F(x,a,b,c); y = ...

17 days ago | 0

Answered
How do you pass MATLAB date (or user input) to SQL query for execution
I remember struggling alot with this when I first started out grabbing data from SQL servers. I found that an approach where I c...

25 days ago | 0

Answered
Export Curve Fitting tool results
You can create such a table yourself (although I dont understand how you get the interpolation function without having such a ta...

27 days ago | 0

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Answered
Export cell array xlswrite
Looping is the way to go. Depending on the dimensions of your cell you need to modify this, but for an example cell array named ...

27 days ago | 0

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Answered
How to store each iteration data, which is having multiple loops
You can add a third dimension to your matrix easily enough, your result p will now be a 3D matrix. (You can even add a 4th dimen...

27 days ago | 0

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Answered
Plot3 using 3 vectors of different length,
The answer is in your error message. Plot3 plots a series of points (x,y,z) - the same would happen if you tried to plot(x,y) wi...

27 days ago | 0

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Answered
Finding the percentage of NaN cells in columns
Lets say you have a vector A. isnan(A) gives you a vector of same dimension of A, with 0 on all indexes with a value, and 1 in a...

1 month ago | 1

Answered
How to export Excel files to the specific folder?
You can find the answer in the documentation for the writetable function. You must simply format your filename to be E:\AZAR\xls...

1 month ago | 0

Answered
Could someone tell me an easy way to plot graph when kk varies from 1 to 100?
Do you need all the variables open with every information in the workspace after the plotting? If not, I would do something like...

1 month ago | 1

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Answered
simple for cycle!
Think what happens for massa_pos when i=1. Nothing happens, because massa(i) is negative. But when you get to i=7, you then get ...

1 month ago | 1

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