Ashfaq Ahmed
I am a first-year Ph.D. student at Brown University. My research interest lies in sea-ice dynamics, and transport phenomena.
Python, MATLAB
Spoken Languages:
Bengali, English, Hindi, Spanish
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Awarded to Ashfaq Ahmed on 15 Feb 2023
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Awarded to Ashfaq Ahmed on 21 Oct 2021
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How to locate a specific point within a grid system?
Hi all, I have an interesting problem where I am stuck for the last couple of days. So, any feedback from you will be highly a...
9 Tage vor | 1 Antwort | 0
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Locating any point from a meshgrid
Hi, I have a 161x161 double size Latitude matrix for a stereographic projection of north pole. If I contour plot it, it looks ...
10 Tage vor | 1 Antwort | 0
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How to plot locations on a polar stereographic map?
Hi all! I have a list of Latitude coordinates, LAT = [85.6494200000000 85.6510100000000 85.6525200000000 85.6539900000000 85...
10 Tage vor | 1 Antwort | 0
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How can I plot Arctic coastlines?
Hi! I have a sea level pressure gradient plot in a grid system which I want to show in the Arctic polar stereographic map. The l...
13 Tage vor | 0 Antworten | 0
0
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'Polyfit' vs 'Detrend' function
Hi al, I have a quick question regarding how does the 'Detrend' function work. Is it a linear regression method? And If we want ...
etwa 2 Monate vor | 1 Antwort | 0
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How to calculate the average of a cell array?
Hi, I have a cell array like this - T = {[10, 1, 30], [15, 2, 10], [20, 3, 20]} I want to calculate the mean of T in a way th...
etwa 2 Monate vor | 2 Antworten | 0
2
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How can I plot this kind of graph with variable sample bins?
Hi all, can anyone please give me an idea on how can I plot this type of figure? The colorbar is tagged with the number of inten...
etwa 2 Monate vor | 1 Antwort | 0
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Missing data retrieve from a periodic pattern.
Hi, I have a temperature record data set (attached) from 2005 to 2016. The temperature cycle is predictable because it's really ...
4 Monate vor | 1 Antwort | 0
1
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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...
4 Monate vor | 1 Antwort | 0
1
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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...
4 Monate 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'...
4 Monate vor | 2 Antworten | 0
2
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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 ...
5 Monate 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...
5 Monate vor | 2 Antworten | 0
2
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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...
5 Monate vor | 1 Antwort | 0
1
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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, ...
5 Monate vor | 1 Antwort | 0
1
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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...
5 Monate vor | 3 Antworten | 0
3
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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...
6 Monate vor | 1 Antwort | 0
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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...
6 Monate vor | 1 Antwort | 0
1
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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...
6 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...
6 Monate vor | 2 Antworten | 0
2
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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...
6 Monate vor | 1 Antwort | 0
1
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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...
6 Monate vor | 1 Antwort | 0
1
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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...
7 Monate vor | 1 Antwort | 0
1
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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...
7 Monate vor | 1 Antwort | 0
1
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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 ...
7 Monate vor | 1 Antwort | 0
1
AntwortFrage
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...
7 Monate vor | 1 Antwort | 0
1
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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...
7 Monate vor | 2 Antworten | 0
2
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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...
7 Monate vor | 1 Antwort | 0
1
AntwortFrage
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...
7 Monate vor | 1 Antwort | 0
1
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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...
7 Monate vor | 1 Antwort | 0
1
Antwort
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