Seth Furman
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20 of your answers have been accepted
Awarded to Seth Furman on 01 Jul 2021
Answer 3 questions that were unanswered for more than 30 days
Awarded to Seth Furman on 28 Oct 2020
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Content Feed
Unstack aggegate function and preset fill value do not match
Thank you for clarifying. You can customize the fill value used in unstack by writing a custom aggregation function. "If t...
2 meses ago | 0
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Combining Rows of a Table based on Matching first column entry?
Check out innerjoin and outerjoin: https://www.mathworks.com/help/matlab/ref/innerjoin.html https://www.mathworks.com/help/mat...
2 meses ago | 0
Creating a table with only headers
table has a preallocation syntax: table('Size', [2 4], 'VariableNames', ["Observations", "Mean", "Treatment", "Residual"], 'Var...
2 meses ago | 2
Unstack aggegate function and preset fill value do not match
1. We highly recommend that you use datetime instead of datenum. Please let me know if you can't use datetime for some reason as...
2 meses ago | 0
Table of Tables or cell of Tables
Hi Christopher, I had been trying to create a 1*13 table in which each table element was another table, however I cannot get ...
2 meses ago | 0
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Table comparison [String - cell compare]
Take a look at the table functions innerjoin and outerjoin: https://www.mathworks.com/help/matlab/ref/table.join.html https://...
2 meses ago | 1
How can I perform a set of calculations on multiple matrices located in a csv. file?
Take a look at the "Large Files and Big Data" section of the doc. This sounds like a good candidate for tall arrays. https://ww...
2 meses ago | 0
Is it possible to aggregate data in a timetable with a weighted daily mean?
Another way to approach this is to 1) Copy the timetable. 2) Shift the copied timetable's row times to the start of the day. ...
2 meses ago | 1
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Calculate Mean Score of subjects
You can 1) find the mean across several variables using mean(t{:, ["Var1", "Var2", "Var3"]}, 2) 2) find rows that meet a certa...
2 meses ago | 0
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Combine data from multiple netCDF files
Take a look at the documentation for reading large files and big data. https://www.mathworks.com/help/matlab/large-files-and-bi...
2 meses ago | 0
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How to remove extra text from date and timestamp ?
We strongly recommend using datetime instead of datenum. As Star Strider mentioned, datetime allows you to specify the 'T' and '...
2 meses ago | 0
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Does MATLAB Coder support DATEVEC, DATENUM, DATESTR, DATETIME, and other date-related functions?
Starting in R2020a, you can use datetime arrays in MATLAB code intended for code generation. For more information, see Code Gene...
3 meses ago | 0
Extracting values corresponding to exact date from a table and update it in another table on a same date
1) Convert your tables to timetables This isn't strictly necessary to answer your question, but is generally a good idea when w...
3 meses ago | 1
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How to call a variable from a string table and do subsequent operations, then save it as a new variable.
I would like to convert the string in variable 3 to numeric Take a look at sscanf. https://www.mathworks.com/help/matlab/ref/s...
3 meses ago | 0
Concatenate tables with variable data types in columns
As Jon mentioned, we can set the variable type explicitly for those variables we know to be floating point numeric. file1 = "ts...
3 meses ago | 0
datestr function Unrecognized month format error
We highly recommend using datetime in place of datestr, now, datenum, etc. You can get a datetime version of the same value usi...
6 meses ago | 1
Split a target date interval into seasons and find the percentile of days for each season
To add to Scott's answer, this kind of grouped calculation on timestamped data lends itself well to timetable and groupsummary. ...
6 meses ago | 1
Count frequency data from table
This can be accomplished using groupsummary and unstack. https://www.mathworks.com/help/matlab/ref/double.groupsummary.html ht...
6 meses ago | 0
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Subset using time range following specific time
Two alternative workflows are Shift the midpoint and tolerance passed into withtol to achieve the desired range. Use logical s...
7 meses ago | 0
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How to plot monthly data for 31 years on the same plot?
It is probably easier to store the data in a timetable and use retime to get the monthly averages. https://www.mathworks.com/he...
7 meses ago | 1
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How to assign corresponding label to dataset
We can create categorical arrays using the categorical function. https://www.mathworks.com/help/matlab/ref/categorical.html ...
7 meses ago | 0
Assigning nested tables inside a parfor-loop
Adding to Walter's answer: The table constructor does not allow specifying the widths of individual variables when preallocat...
7 meses ago | 1
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Calculate the Euclidean distance of simple combinations in a table
What have you tried? Where are you confused? You might want to take a look at the following documentation links: https://www...
7 meses ago | 0
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What is the best way to append double arrays while working in a loop?
You can append values to a table using concatenation as follows https://www.mathworks.com/help/matlab/matlab_prog/add-and-delet...
10 meses ago | 0
Get variable value from imported text
Sounds like you could use readtable. https://www.mathworks.com/help/matlab/ref/readtable.html >> readtable('05-2350-33R.S20201...
10 meses ago | 0
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Delete data from the following minutes from data that does not meet a certain condition
I believe the following post answers your question https://www.mathworks.com/matlabcentral/answers/402361-delete-rows-in-a-tabl...
10 meses ago | 0
Moving vertical line as time marker
Check out the xline function, which lets you plot a vertical line as well as update its position. https://www.mathworks.com/hel...
10 meses ago | 0
Labelling columns of large array in a searchable way?
table supports custom metadata properties. https://www.mathworks.com/help/matlab/matlab_prog/add-custom-properties-to-tables-an...
10 meses ago | 0
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Need help with storing values in a table and/or matrix
If you want to create a table like in the attached screenshot, you can use the table constructor. For example, >> table([0.01;0...
10 meses ago | 0
How do I get a function in a for loop so it applies it to an entire table?
To add to Chris' answer, you can also find the yearly max for each station using retime. For example, using the first two column...
10 meses ago | 0
