Community Profile # Pawel Jastrzebski

### Mahle Engine Systems Ltd

Last seen: alrededor de 1 año ago Active since 2017

Project Leader at Product Testing department.

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

#### Statistics

All
• • • • • • • • #### Content Feed

View by

How to properly apply cellfun in this case - text spliting

alrededor de 3 años 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 ...

alrededor de 3 años ago | 3 answers | 0

### 3

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>>

alrededor de 3 años ago | 0

| accepted

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

alrededor de 3 años 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...

alrededor de 3 años ago | 2 answers | 0

### 2

How to generate a sine signal in which initially frequency increases linearly, then remains constant for some time and again decreases linearly.

alrededor de 3 años ago | 0

| accepted

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...

alrededor de 3 años ago | 0

| accepted

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...

alrededor de 3 años ago | 1

| accepted

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....

más de 3 años ago | 0

| accepted

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'); % ...

más de 3 años ago | 0

| accepted

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...

más de 3 años ago | 0

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...

más de 3 años ago | 0

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...

más de 3 años ago | 0

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...

más de 3 años ago | 1

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...

más de 3 años ago | 0

| accepted

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> ...

más de 3 años ago | 0

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 ...

más de 3 años ago | 0

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...

más de 3 años ago | 0

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 ...

más de 3 años ago | 0

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(...

más de 3 años ago | 0

| accepted

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...

más de 3 años ago | 0

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...

más de 3 años ago | 1

| accepted

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...

más de 3 años ago | 1

2D color or surface plot based on 3 vectors of data

más de 3 años ago | 0

| accepted

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...

más de 3 años ago | 0

how compute the pixel sum for image?

más de 3 años ago | 0

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); ...

más de 3 años ago | 1

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...

más de 3 años ago | 0