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Ashfaq Ahmed


Last seen: ein Tag vor |  Aktiv seit 2021

I am a first-year Ph.D. student at Brown University. My research interest lies in sea-ice dynamics, and transport phenomena.

Programming Languages:
Python, MATLAB
Spoken Languages:
Bengali, English, Hindi, Spanish

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How can I find out some specific dates from two date lists?
Hi, I have two date lists. DateList1.m contains dates from 1984 to 2022 (with many gaps) and DateList2.m constains dates from 20...

ein Tag vor | 1 Antwort | 0

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How to calculate and plot this pcolor plot?
Hi, I have a 3D matrix of 1100x800x764 size. This forms a 1100 by 800 grid cell with 764 different samples. I want to calcul...

16 Tage vor | 1 Antwort | 0

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How can I set the NaN values to black in a pcolor plot?
Hi all! Is there any way to set the NaN values as black/grey or any other color instead of white? I am using this code but it'...

23 Tage vor | 2 Antworten | 0

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Frage


How to create a color plot based on the number of occurance?
Hi! I have a polar plot and we can see most of the data points fall within the 0° and 180° line. And the rest of the points are ...

etwa ein Monat vor | 1 Antwort | 0

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How to deseasonalize this temperature record?
Hi all! I have a temperature record (Temp.mat) that holds hourly temperature information from 2005 to 2019. Can anyone please g...

etwa ein Monat vor | 2 Antworten | 0

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Frage


How to filter out dates within a datetime list?
Hi! I have two timetable containing hourly information from 2005 to 2019. The first one NOAA.mat is a 131472x1 timetable and the...

etwa ein Monat vor | 1 Antwort | 0

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Frage


How to define color axis in a for loop?
Hi all, I wanted to define the color axis range based on the number of the ii in this for loop, but I don't know what is wrong, ...

etwa ein Monat vor | 1 Antwort | 0

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Frage


How to extract specific dates from a datetime table?
Hi! I have a datetime table (DATE1.mat) containing some dates from 1984 to 2022 at 10:00 am. I have another date timetable (DAT...

etwa 2 Monate vor | 3 Antworten | 0

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Frage


How can I calculate the modulus and argument for every point in a plot?
Hi all, Suppose, I have a scattered plot like this - I want find out the θ, and r for every corresponding point. Can anyo...

2 Monate vor | 1 Antwort | 0

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Frage


How to find the largest length of a cell array?
Hi, How can I find out the largest size of a cell array element? For example, this f array contains many doubles within it and...

2 Monate vor | 1 Antwort | 0

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Frage


How to subcategorize dates from a datetime table?
Hi all, I have a datetime table in this Period.mat file (attached) where I have a date list starting from 01/01/2005 to 12/31...

2 Monate vor | 1 Antwort | 0

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How can I list individual year from the datetime table?
Hi all, I have a datetime matrix (2003 to 2019, 17 years) and I want to list the range of index for individual years. For examp...

2 Monate vor | 2 Antworten | 0

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Frage


How to perform a fast fourier transform (fft) or Lomb-Scargle (plomb) on this data set?
Hi all, I have this timetable with only two dataset: time series and temperature series. I want to calculate the frequency (p...

3 Monate vor | 1 Antwort | 0

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How can I convert cell to a timetable?
Hi all, I have a table that is consists of both double (temperature, salinity) and cell array (sampling time). But I want to con...

3 Monate vor | 1 Antwort | 0

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Frage


Signal Fitting with sine curve (and how to find out the phase shift?)
Hi! I have a temperature signal (Y-axis) consisting of 764 values that looks like this - And the time (X-axis) of this sig...

3 Monate vor | 1 Antwort | 0

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Frage


How to write this in the title?
Hi, can any one please help me figuring out how can I write this title? For the value of A, t, and phi I want to use the no...

3 Monate vor | 1 Antwort | 0

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Frage


Sinusoidal curve from discrete dataset
Hi! I have a few discrete data-set and when I plot them it looks like this - Can anyone please tell me how can I fit these ...

3 Monate vor | 1 Antwort | 0

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Frage


How can I separate individual years from a timetable?
Hi! I have one table that contains 764 rows with different year's data point from 1984 to 2022. For example, row 1 to 8 are for...

3 Monate vor | 1 Antwort | 0

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Frage


How can I run these codes in a for loop?
Hi! I understand that the variables should not be named dynamically. So, I would like to have an idea on how can I run these kin...

3 Monate vor | 2 Antworten | 0

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Frage


Rebuilding a 3D matrix
Hi everyone! I am doing an operation where I will have to follow these algorithm steps. Can anyone please let me know how to pe...

3 Monate vor | 1 Antwort | 0

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Frage


How to extract the months from a datetime table?
Hi! I have a series of dates like this - I want to create 12 variables naming - January, February, March, April,.., Decembe...

3 Monate vor | 1 Antwort | 0

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Question related to pcolor bar and its position
Hi! Can anyone please tell me a) how can I use one long pcolorbar at the right side of this figure instead of using 4 differen...

4 Monate vor | 1 Antwort | 0

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How can I find index from a 3D matrix?
Hi, I have a matrix M that is of this size: M = 376x268x764 double. Here, 376x268 are latitude longitude grid cells and 764 is...

4 Monate vor | 1 Antwort | 0

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Frage


How can I find out the index of the points here?
HI! I have this interesting indexing question. I have a cloud data set (attached, Cloud.mat). Plotting the X and Y, I get th...

4 Monate vor | 3 Antworten | 0

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How can I make a function from this few lines of codes?
Hi all, can anyone please tell me how can I make function of this calculation so that I can perform the same operation for any g...

4 Monate vor | 1 Antwort | 0

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Frage


How can I write this in my figure title?
Hi! Can anyone please tell me how can I write this in my figure (either in title or in y axis)? Thank you!!

4 Monate vor | 1 Antwort | 0

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Frage


How to find a list of dates from a timetable?
Hi! I have a long timetable (Date_Captured.mat, attched) that contains 28805 different dates. ...

4 Monate vor | 3 Antworten | 0

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Frage


How can I make an array using for loop?
Hi all! I am trying to prepare a big array by adding all the cells from Time (18x1 cell array) like this - TimeSeries = [Time...

4 Monate vor | 2 Antworten | 0

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How can I extract a specific time for a "datetime" table?
Dear coders, I have a simple question but I am confused how to code it. I have this datetime table (attached with the question...

4 Monate vor | 3 Antworten | 0

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How can I plot this date time graph?
Hi! I have this Years.mat timetable where I have three columns - a) date, b) hours of the date, and c) tide height. Can anyone...

4 Monate vor | 2 Antworten | 0

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