Ashfaq Ahmed
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I am a third-year Ph.D. student at Brown University. My research interest lies in sea-ice dynamics and transport phenomena.
Python, MATLAB
Spoken Languages:
English, Hindi, Spanish, Bengali
Pronouns:
He/him
Statistik
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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 make two different grid systems comparable?
Hello all, I am trying to solve a problem which has been solved previously, but I am still struglling to figure a way out. I w...
5 Monate vor | 1 Antwort | 0
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K-Fold validation to compute bias correction.
Hi all! Say, I have an in situ buoy data set in a variable called Tb. Now, I have corresponding satellite measurements for each...
9 Monate vor | 1 Antwort | 0
1
AntwortFrage
How to plot a 2D filled colour contour plot depth profile?
Hi all, I have a 3D matrix named SALT which is of 90x90x50 size. Here, 90x90 is latitude/longitude information and 50 is salin...
12 Monate vor | 1 Antwort | 0
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AntwortFrage
Defining the central longitude in Arctic borders in the Arctic Mapping Tool
Hi! I am curretnly using ArcticMappingToolbox to plot the Arctic borders. But automatically it uses 45°W as the central longitud...
12 Monate vor | 1 Antwort | 0
1
AntwortFrage
How to perform t-test for a temperature anomaly data set?
Hi all, let's say, I have a 376x268x235 3D matrix, with values ranging from -2.5°C to 0.65°C. Here, 376x268 is the grid system...
etwa ein Jahr vor | 1 Antwort | 0
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AntwortFrage
How to plot the best fitted ellipse or circle?
Hi all, I have a data set (attached here) that has two arrays. I want to plot them in a polar graph and want to find out the b...
etwa ein Jahr vor | 4 Antworten | 0
4
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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...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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 ...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
etwa ein Jahr vor | 1 Antwort | 0
1
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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 ...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr 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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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 ...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr 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...
mehr als ein Jahr vor | 1 Antwort | 0
1
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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'...
mehr als ein Jahr 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 ...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr 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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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, ...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr 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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 2 Antworten | 0
2
AntwortenFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
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