# david crowley

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Question

Table referencing using cell

Hi all, I have two tables: Tickers Tickers nbr ________ ___ {'A2M' } 1 {'AAN' } 2 {'AAP' ...

mer än ett år ago | 2 answers | 0

### 2

answersSimple logical conditional flag column

Figured it out tt.C2 = cumsum(tt.C1);

nästan 3 år ago | 0

| accepted

Question

Simple logical conditional flag column

I require help to develop some logic on the below data extract. I need the C2 column to toggle to '1' when C1 is '1'. Then, when...

nästan 3 år ago | 2 answers | 0

### 2

answersQuestion

Build array from for loop

I have a for loop that generates an array (newdd) that changes in length in each iteration. How do create a new variable (arra...

ungefär 3 år ago | 1 answer | 0

### 1

answerQuestion

Calculate running hold duration

I have a table that lists the history of stock transaction (extract attached). I require assistance to find out how long I've he...

ungefär 3 år ago | 1 answer | 0

### 1

answerQuestion

Divide by every N rows

I am trying to perform the following calculation, but every 52 rows the denominator needs to change from (1,1) to (52,1) then (1...

ungefär 3 år ago | 1 answer | 0

### 1

answerQuestion

Add String to Matlab Plot Annotation

I am trying to add an annotation to a plot that uses a variable from the workspace. I have used the below code, but the only out...

ungefär 3 år ago | 1 answer | 0

### 1

answerQuestion

Ranking values - sorting into descending order

I have a that for each row (i) ranks the column values. However, it ranks them in the ascending order. I require it to be ranked...

ungefär 3 år ago | 2 answers | 0

### 2

answersQuestion

For loop to multiple columns

I have the following block of code: %RSI Calculation n = [14:2:18]; for i = 1:n gainC = diff(ABC).*((diff(ABC))> 0); ...

mer än 3 år ago | 0 answers | 0

### 0

answersQuestion

Python function to Matlab

I have the following moving average function developed in Python3 that I need to convert into MATLAB. However, I can't seem to f...

mer än 3 år ago | 4 answers | 0

### 4

answersQuestion

Finding the difference in timeseries values

If I have the below timetable, how do I find the difference between values? Diff() doesn't work. I've tried diff(TableName.Varia...

mer än 3 år ago | 3 answers | 0

### 3

answersQuestion

Setting Arguments using VarFun & RSIndex

Due to the layout of my timetable data, I am required to use the following code when trying to calculate the rsindex(): %Set RS...

mer än 3 år ago | 1 answer | 0

### 1

answerQuestion

Using Diff() with NaN values

I am trying to find the difference between rows using the diff() function. However, because the rows contain NaN values I am get...

mer än 3 år ago | 1 answer | 0

### 1

answerQuestion

Error using movmax index

I need to find the number of periods since a stock price recorded an 14-day high. My proposed method was to use the following an...

mer än 3 år ago | 1 answer | 0