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sarah Abdellahi


Active since 2018

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Is there a statistically significant difference between these time series?
Experts, I have some wind velocity measurments in different experimental conditions and would like to talk about the differen...

5 years ago | 1 answer | 0

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answer

Question


Calculate volume below a 3D points
I have a set of x,y,z numbers and would like to calculate the volume beneath the surface that passes through them. The data(T) i...

5 years ago | 2 answers | 0

2

answers

Question


Array indices must be positive integers or logical values!
I have trained a regression model and now want to use it and get this error "Array indices must be positive integers or logical ...

5 years ago | 1 answer | 0

1

answer

Question


adding new elements between each two elements of a vector
Experts, I have a an array as follows: T = 985 926 692 749 915 825 662 760 931 810 668 764 ...

5 years ago | 1 answer | 0

1

answer

Question


multcompare and anovan result in zero and nan
I want to perform a multcompare test on my data set and find which parameter or the cobination of parameters can change the mean...

5 years ago | 1 answer | 0

1

answer

Question


Different length of predictors to train a regression model
I want to train a Gaussian regression model to predict the wind speed based on fan RPM. I experimentally tested different d(RPM...

5 years ago | 0 answers | 0

0

answers

Question


Condition on the last last frame of a video
Hello experts, I extracted the frames of a video and are visible in the current folder (left column in matlab). I have 168 fr...

6 years ago | 1 answer | 0

1

answer

Question


rename files in a directory
Hello :) I have several folders in a directory and in each folder there is a file named as DATA.mat. I want the code to open ...

6 years ago | 1 answer | 0

1

answer

Question


Create index vector from grouping variable
I am using grp2inx command to convert categorical data into numbers that I can find correlation between the variables. When matl...

6 years ago | 1 answer | 0

1

answer

Question


grpstats for non-numerical data
Hello Reading the grpstats documentation I realized I can easily count the number of elements that meet 2 conditions like this...

6 years ago | 1 answer | 0

1

answer

Question


Predictor importance vertical axis unit
Hello :) I am reading the fitctree document on (https://www.mathworks.com/help/stats/fitctree.html) and wondering what is unit ...

6 years ago | 0 answers | 0

0

answers

Question


Remove the entire rows of 'Unknown' from a table
Hello :) I have a table that contains some 'Unknown'. I would like to remove the entire rows of any columns that is 'Unknown'. ...

6 years ago | 1 answer | 0

1

answer

Question


Importing and naming files in a loop
Friends :) I want to import several files sequentially. In each step, I want the required data to be extracted and then store...

6 years ago | 1 answer | 0

1

answer

Question


No obvious maximum in power spectral density graph
I am extremely new to signal processing. I have sampled the wind velocity downstream of a fan at 100 HZ and here is the time...

6 years ago | 1 answer | 0

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answer