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Jakob B. Nielsen


Last seen: Today
61 total contributions since 2019

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  • 3 Month Streak
  • Knowledgeable Level 3
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Answered
Help in Developing Graph.
This is case specific, but what you want to do is define the 8 interesting points, and then simply plot them. The text is less s...

3 hours ago | 0

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Finding corresponding term from a uitable
If I recall, strcmpi needs string arrays, character vectors or cell arrays of character vectors as inputs, whereas you give it a...

8 hours ago | 0

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Write table with UIPUT file
Try typing this bit in the command window: >> '(pname,fname)' ans = '(pname,fname)' So your path is a string named (pna...

1 day ago | 0

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How can I splitt up a big matrix into smaller matrises, splitting it up by values on the x-axis
Logical indexing will help you here - a for loop is also possible but would be much more complicated. Lets call your initial m...

1 day ago | 0

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How can I create a random walk for a given function?
You can use a for loop, and then add your randomness in whatever way you like. Example: for i=1:100 %anything that follows will...

2 days ago | 0

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Any idea how to do and represent ttest results on box plot?
Yes - the way forward is to compare 1 and 2, 1 and 3 and so on. You could look into some of the built-in tools in matlab, for ex...

2 days ago | 0

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How can i add new value into next row in excel?
A simple solution: define a counter file that pertains to your GUI - lets call it rownumber. Save it manually the first time, to...

2 days ago | 0

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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...

6 days ago | 0

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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 ...

6 days ago | 0

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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...

6 days ago | 1

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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)...

6 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 ...

13 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...

13 days ago | 0

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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...

13 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...

14 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...

14 days ago | 0

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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...

14 days ago | 0

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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...

15 days ago | 1

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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...

15 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'...

15 days ago | 0

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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, ...

15 days ago | 0

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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...

16 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...

16 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...

16 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...

16 days ago | 0

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

16 days ago | 0

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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...

19 days ago | 0

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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 = ...

19 days ago | 0

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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...

27 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...

29 days ago | 0

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