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Pawel Jastrzebski


Mahle Engine Systems Ltd

Last seen: mer än 4 år ago |  Active since 2017

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Project Leader at Product Testing department.

Mahle UK R&D Center for automotive engine plain bearings.

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Answered
How to properly apply cellfun in this case - text spliting
<https://uk.mathworks.com/matlabcentral/profile/authors/3073010-rik-wisselink Rik Wisselink>, <https://uk.mathworks.com/matlabce...

ungefär 6 år ago | 0

Question


How to properly apply cellfun in this case - text spliting
I've got a table like this and my task is to separate the parameter name from a value: t = 10×1 table ...

ungefär 6 år ago | 3 answers | 0

3

answers

Answered
Error using figure: First argument must be a figure object or a positive Integer
The doc says the input argument must be of double type: <</matlabcentral/answers/uploaded_files/128021/Capture.PNG>>

mer än 6 år ago | 0

| accepted

Answered
How do I plot a multivariate distribution?
Consider the following example: NoOfPoints = 1000; % Generate 'x' and 'y' x = rand(NoOfPoints,1); y ...

mer än 6 år ago | 0

| accepted

Question


How to use 'setvartype' to get the variable as 'datetime' formatted as: yyyy-MM-dd
I've got a spreadsheet which gets imported into Matlab via *readtable()*. Prior to importing I use *detectImportOptions()* an...

mer än 6 år ago | 2 answers | 0

2

answers

Answered
How to generate a sine signal in which initially frequency increases linearly, then remains constant for some time and again decreases linearly.
Would it look like this: <</matlabcentral/answers/uploaded_files/126310/untitled.jpg>> % y = sine(2*pi*f*t) t...

mer än 6 år ago | 0

| accepted

Answered
Plotting multiple trajectories on map
This is roughly how I would go about this problem [code untested]: % Get all the file names in the folder filename = dir...

mer än 6 år ago | 0

| accepted

Answered
Why is the correlation matrix much larger than the original matrix?
Have you checked the documentation for the corrcoef function? It explains exactly how the results are obtained: * <https://uk...

mer än 6 år ago | 1

| accepted

Answered
Plotting very small values using bar command
If you have a mix of relatively high and low values, you might want to consider using the logarithmic scale for the y-axis, i.e....

mer än 6 år ago | 0

| accepted

Answered
How to apply function to certain files in directory
Just get the function to work on the selected files in the folder to begin with: i.e. fileNames = dir('*.raw'); % ...

mer än 6 år ago | 0

| accepted

Answered
How to remove consecutive duplicates ?
Consider the following example: ConsecDuplic = [1 2 2 3 4 5 5 5 6 7 8 9 9] % Logical vector: % check if next val...

mer än 6 år ago | 2

Answered
How can I recognize an empty row in the middle of an Excel file?
Consider the following code: % STEP 1: LOAD DATA % load excel file to a table t = readtable('BF1.xlsx'); % thi...

mer än 6 år ago | 0

Answered
I need to put data from columns in different cells into one vector
Consider the following example: % 1. Create fake data (you'll use the real data) % create empty cell 1x20 c = cel...

mer än 6 år ago | 0

Answered
I am getting Unbalanced or unexpected parenthesis or bracket?
*Line 1:* get rid of the comma: if PlotVI_Module *Line 15 and 25:* change round brackets to square ones and you had a on...

mer än 6 år ago | 1

Answered
how to add numbers and labels to scatterplot bubbles?
There's a function called: * <https://uk.mathworks.com/help/matlab/ref/text.html?s_tid=doc_ta Text> that is used for label...

mer än 6 år ago | 1

| accepted

Answered
How do I change axes orientation to a desired one
See documentation for: * <https://uk.mathworks.com/help/matlab/ref/view.html?searchHighlight=view&s_tid=doc_srchtitle view> ...

mer än 6 år ago | 0

Answered
Cut random 30secs of audio from an audio recording .wav
This code will allow you to import and export all of the audio files in your current folder: % get file names in the ...

mer än 6 år ago | 0

Answered
How to extract information from the filename?
This will get you the structure of all of the text files in your current folder: x = dir('*.txt') % structure In m...

mer än 6 år ago | 0

Answered
How to find vectors that are multiple of other vectors inside a matrix
I think this will get you going. This code will help you identify which 'NextRow' is a multiplier of 'previousRow': % DATA ...

mer än 6 år ago | 0

Answered
How do i plot?
Is this what you meant? dt = 0.0001; t = 0:dt:0.02; y = (5+cos(20*pi*t)).*cos(2*pi*100*t); figure; plot(...

mer än 6 år ago | 0

| accepted

Answered
How to plot vertical lines for reference using vline?
I've moved my comment to the answer so the question can be closed. I've also tried to copy your example to show you what I think...

mer än 6 år ago | 0

Answered
Covariance calculation like excel formula
Given the code: A = randi([18 22], 20,1) B = randi([15 25], 20,1) C = cov(A,B) This is the outcome that you'll...

mer än 6 år ago | 1

| accepted

Answered
How to add an interval to a number?
This example should have the answers to your problems: % Values that can be changed in the code: % d, Xu, Yu % or...

mer än 6 år ago | 1

Answered
2D color or surface plot based on 3 vectors of data
How about this: % interpolation data % as in: % https://uk.mathworks.com/help/matlab/ref/scatteredinterpolant.html?se...

mer än 6 år ago | 0

| accepted

Answered
2D color or surface plot based on 3 vectors of data
In order to be able to use contour plot, your Z data need to be of X*Y size. What you can do is the following: % C is a ma...

mer än 6 år ago | 0

Answered
how compute the pixel sum for image?
# Use <https://uk.mathworks.com/help/matlab/ref/imread.html#btnczv9-1-A imread - output> to load the image into Matlab and store...

mer än 6 år ago | 0

Answered
Getting corresponding y values from moving average graph when having x values
Consider the following example: % RANDOM DATA startDate = datetime(2018,01,01); endDate = datetime(2018,04,01); ...

mer än 6 år ago | 1

Answered
To label same X axis twice
You can certainly add minor ticks and show them on the grid but I'm not sure if there's an easy way to label them. In other word...

mer än 6 år ago | 0

Answered
Long-horizon predictive regressions
The R value calculation is available in Matlab: * <https://uk.mathworks.com/help/matlab/ref/corrcoef.html R coefficient> As ...

mer än 6 år ago | 0

| accepted

Answered
how to save 120 figures in a folder defined by user and later retrieve it?
When you say 120-off figures: * Are these matlab figures *.fig*? Also, see the code below that was used to create what is ...

mer än 6 år ago | 0

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