# ahmad Saad

### alexandria

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**Feeds**

Question

MSSA method multichannel spectrum analysis

How we can use multichannel spectrum analysis with time series contain temporal and spatial data :time, latitude , longitude ?...

3 månader ago | 1 answer | 0

### 1

answerQuestion

How to performed statistical calculations

Hi; How to performed statistical calculations (as defined in the attached file) such as: Normalized Mean Squared Error (NMS...

11 månader ago | 1 answer | 0

### 1

answerQuestion

smoothing datasets containg nan

how i can smooth these data : data=[1 1.927259 2 1.519675 3 2.553609 4 3.138377 5 3.6647 ...

11 månader ago | 2 answers | 0

### 2

answersQuestion

how to smooth these data ?

how i can smooth these data : data=[1 1.927259 2 1.519675 3 2.553609 4 3.138377 5 3.6647 ...

11 månader ago | 0 answers | 0

### 0

answersQuestion

how to plot a map

Hi, i need to know how i can plot this map ?

12 månader ago | 1 answer | 0

### 1

answerQuestion

how to smooth data

Hi; how to get the smoothed values of these data: 1 NaN 2 1.356390367 3 1.295994741 4 1.50041999 5 2.790612162 6 4.622462...

12 månader ago | 1 answer | 0

### 1

answerQuestion

how to calculate the validation metrics ?

Hi; how i can compute and plot the attached figure for the validation metrics ????

12 månader ago | 0 answers | 0

### 0

answersQuestion

how to make linear fit

Hi; How to make a plot similar to the attached figure ??

12 månader ago | 1 answer | 0

### 1

answerplot data points on a map

@Dyuman Joshi Unfortunately, not yet. i still have ver 2018a

12 månader ago | 0

Question

plot data points on a map

i need to plot the attached figure. where col1: lat col2 :long col3: obs

12 månader ago | 1 answer | 0

### 1

answerQuestion

plot a geographical map

Hi; how i can plot a map like that in the attached file using matlab????

12 månader ago | 1 answer | 0

### 1

answerQuestion

how to grid data

Hi; I have the attached data: Col1: time, Col2: lat, Col3: long, Col4: obs I need to grid these data (2.5 lat x 5 long). ...

12 månader ago | 0 answers | 0

### 0

answersQuestion

how to bin data

i have (attahed) dataset of 3 cols : (1st for lat. ,2nd for long., and the 3rd for datavalues). i need to bin these data i...

ungefär ett år ago | 2 answers | 0

### 2

answersQuestion

combine data into hourly-based data

Col2 is a time column and i need to classify the attached data to be hourly-based data. for example: for 0 < col2 <=1 ...

ungefär ett år ago | 2 answers | 0

### 2

answersQuestion

comparing two matrices of different dimensions

i have two matrices,A with dimension (23,2) and B with dimension (50465,2) . i compare the first col of each matrix. ...

ungefär ett år ago | 2 answers | 0

### 2

answersQuestion

bandpass filter for daily data ???

i want to apply a band pass filter to keep only the frequency components between 1/1000 day-1 : 1/5 day-1

nästan 7 år ago | 0 answers | 0

### 0

answersQuestion

inverse wavelet and reconstruction of time series

how i can reconstruct a time series between the scales 4-1024 using Morlet wavelet (i.e, using wavelet as a bandpass filter) ?

nästan 7 år ago | 0 answers | 0

### 0

answerstwo for Nested Loops

Birdman deep thanks, it works fine, thanks : Birdman

nästan 7 år ago | 0

two for Nested Loops

This the actual data from 1/10/2017 to 30/11/2017 the output should have 61 values

nästan 7 år ago | 0

two for Nested Loops

I'm very grateful for all. i'll check the answers and feek back the answers are really helpfull thanks again

nästan 7 år ago | 0

Question

two for Nested Loops

How i can sum the third column to get the average over each 24 values of the second coloumn?

nästan 7 år ago | 6 answers | 0

### 6

answersQuestion

About Butterworth filter design ?

Please; anyone can help me to design a Buttterworth filter for the attached data in the daily bases? i want to keep freq compo...

mer än 7 år ago | 1 answer | 0