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Doheon Lee


Last seen: 3 days ago|Active since 2012

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Question


Serious problems in MATLAB 2021b running in Mac. Please help.
我正在使用Intel Mac中安装的MATLAB 2021b（Mac Pro的最新版本，而不是MacBook Pro）。我有以下问题...

9 months ago | 2 answers | 2

2

answers

Question


How to find the first date of each month in a datetime array?
我有一个DateTime数组，如下所示，我喜欢在数组中找到每个月的第一个日期。d = ['14 -Jan-2018''1 ...

10 months ago | 2 answers | 0

2

answers

Question


How to deal with asset data having zeros in part when backtesting with 'runBacktest'?
When backtesting with the functions 'backtestStrategy', 'backtestEngine', and 'runBacktest', I have an issue with an asset data ...

12 months ago | 0 answers | 0

0

answers

Question


how to create a timetable from a datetime array and a matrix?
I like to create a timetable from a datetime array and a matrix. d = datetime('2021-01-01'):caldays(1):datetime('2021-01-10');...

12 months ago | 1 answer | 0

1

answer

Question


In Backtesting, where does the input argument 'current_weights' in a rebalancing function come from?
The following code is from the MATLAB documents for 'backtestStrategy' from here. Please note that I added few lines to the ori...

1 year ago | 1 answer | 0

1

answer

Question


In table, how to count a number of specific values by year?
I have a following table. Date Value win_repeat ___________ _____ __________ 20-Nov-2018...

1 year ago | 2 answers | 0

2

answers

Question


Please help with unexpected outputs from symbolic expressions.
Hi MATLAB Community, I am strugling with symbolic expressions. In the following codes, the upper code (phi_1) outputs a sym...

1 year ago | 1 answer | 0

1

answer

Question


在表中,如何选择一列中的值on values in another column?
如标题中所述，我喜欢根据Anothe列中的值在一个表中调用值。我有一张follwoing桌子。t =表...

1 year ago | 1 answer | 0

1

answer

Question


Indexing dates yearly and quarterly.
I have many tables, in which the first column is date and the second column in data. And I want to separte these data yearly a...

2 years ago | 1 answer | 0

1

answer

Question


Repeat Expression in a 'for' loop after try/catch
I have try/catch lines inside a 'for' loop as below. What I want is to repeat index 'i' if an error is encountered. However, 'i'...

2 years ago | 1 answer | 0

1

answer

Question


Access to object or struct data
I have a structure data as below, i.e., result.data result.data ans = d2: [1 x 1 frame] d3: [1 x 1 signal] I ca...

7 years ago | 0 answers | 0

0

answers

Question


How can I use the variable name in the WORK PLACE inside a function?
Maybe be my question is a bit ambiguous. I want to use one of variable names in the workplace inside a function. For example...

9 years ago | 1 answer | 0

1

answer