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Salma fathi


Last seen: environ un mois ago Active since 2021

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splitting dataset into training and testing
Hello, We are trying to split some data into training and testing datasets, 80% to 20% respectively, and we are having the fol...

environ 2 mois ago | 1 answer | 0

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answer

Question


Finding outliers in a dataset
Hello, shown in the image are the plots for the dataset I am having. I am trying to clean out the dataset from outliers so that ...

environ 2 mois ago | 1 answer | 0

1

answer

Question


finding a specific peak point in a table
Hello, attached is a table of data where we are intrested in locating the peak point according to a certain criteria, it shoul...

2 mois ago | 1 answer | 0

1

answer

Question


finding the maximum within a specific range
Hello, for the attached table we would like to find the index of the max point of the variable NE8 within the range of (200,400...

2 mois ago | 2 answers | 0

2

answers

Question


how to only change the cells with NAN values in a table?
I am trying to apply the following operation on certain rows in a tabel of data [Lia, Locb] = ismember(datatable2.Date, EDPALL...

2 mois ago | 1 answer | 0

1

answer

Question


filtering data inside a table and storing multiple tables in one big table
i am trying to do the following After reading some data files where each file contains data stored in a table. we find the ma...

2 mois ago | 2 answers | 0

2

answers

Question


convert dates to specific format
how can I change the format of the dates in the column shown in the image to the format uuuuMMddHHmm?

2 mois ago | 2 answers | 0

2

answers

Question


how to concatenate two tables efficiently
I am trying to read a huge amount of files, each file would have data stored in a atable in it, after reading the files we would...

3 mois ago | 2 answers | 0

2

answers

Question


How to make the following code valid for tables not only matrices
hello, The following code finds the peak point for some data stored in an array or matrix lets say. for ied=1:length(EDP) ...

3 mois ago | 2 answers | 0

2

answers

Question


Error: Row index exceeds table dimensions.
Hello, I am stuck at some point with this error . I am attaching a small sample of the file that contains the table SOLARL that ...

3 mois ago | 1 answer | 0

1

answer

Question


extracting 20% of the data from a table
i have the following data table that represents the curve that is is shown in the plot, at row number 9 in this table we have th...

3 mois ago | 1 answer | 0

1

answer

Question


plotting three curves in the same plot
I have plotted the follwing two curves as in the image below (fig2). For the curve in red I have used a matlab generated cod...

4 mois ago | 1 answer | 0

1

answer

Question


Solving an initial value problem for a PDE
Having the following initial value problem with some mathematical computations we reach to an end that an implicit general s...

5 mois ago | 1 answer | 0

1

answer

Question


finding the slope of each segement in a fitted curve
having the following plot, Is there a method that would allow me to find the slope of each segment in this plot or at least, ...

6 mois ago | 2 answers | 0

2

answers

Question


reading multiple text file from two different folders using nested for loop
i am using the following lines to read multiple text files and do some comparison between them. Baiscally the first loop will r...

6 mois ago | 1 answer | 0

1

answer

Question


comparing the minutes values of two tables
I am trying to make a comparison between the minutes value of the time from two tables using the following lines first we checc...

6 mois ago | 1 answer | 0

1

answer

Question


converting date and time string to datetime object
I am trying to read several text files each has 4 variables, the first coumn has the date and time values otgether in the follow...

6 mois ago | 1 answer | 0

1

answer

Question


adding a date column to a matrix
haveing the followoing matrix EDP = [double(netcdf.getVar(ncid,0)),double(netcdf.getVar(ncid,1)),double(netcdf.getVar(ncid,2))...

8 mois ago | 1 answer | 0

1

answer

Question


extracting files having names with the same date from a dataset
I am having some txt files as a training dataset for a modele I'm trying to build. if we asumed that the txt files names has t...

8 mois ago | 3 answers | 0

3

answers

Question


how to copy specific columns of a matrix to a table
I have a matrix of six columns each column for a variable (Altitude, Latitude, Longitude, Azimuth, TEC, Ne). and a table of 3 co...

9 mois ago | 1 answer | 0

1

answer

Question


Grouping data into bins and then plotting them
Hello, I am trying to read some tables into matlab, the tables contain the variable 'hour' to represent the time when the data a...

11 mois ago | 1 answer | 0

1

answer

Question


deleting unneeded columns from tables after using them
I need one little help in the follwoing: the code I attached is supposed to read some files as tables. split a table into small...

12 mois ago | 1 answer | 0

1

answer

Question


which method is better when dealing with cell arrays
assuming we have a cell array containing some data coming from some data files that was structured in two methods: 1st method: ...

12 mois ago | 0 answers | 0

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answers