zoo | portable datastructure for rapid prototyping | Genomics library

Currently I have written the ifelse statement to get the correct symbol pattern. But I want to know how I can write tryCatch for this statement? Because sometimes getSymbols returns error if symbol doesn't have correct extension.

I'm trying to take the moving average of a players fantasy points, based on their past performance against the same hand pitcher, over the past 3 games.

I have a Pandas dataframe with a multiindex, the result of a pivot (as in the pivot pandas function description)

I'm trying to learn Recurrent Neural Networks (RNN) with Flux.jl in Julia by following along some tutorials, like Char RNN from the FluxML/model-zoo.

I managed to build and train a model containing some RNN cells, but am failing to evaluate the model after training.

Can someone point out what I'm missing for this code to evaluate a simple (untrained) RNN?

I want to perform an expanding regression at monthly frequency using daily data. The model is:

I am studying R and the exercise needs that I create a column to Quarter where the data seem Q4.

I use zoo library and lubridate, but the result that I achieved was a year plus Q1.

I have a column InvoiceDate where I it has a complete datetime.

What I need:

The original table, more specifically column, has a date-time like this: 2010-12-01 08:26:00. The column name is InvoiceDate. I need to get this column and to create other columns with specific values, like a quarter, year, month, etc.

What I archieved:

How do I achieve my goal?

Test Data

I have an object which contains two different object types, I am trying to map it to another object which will contain a single list.

In this simple minimal reproducible example I have created a zoo class which contains a list of animals this is the destination. The source is the MammelHouse class which contains lists of pig and cow objects.

My issue is when I try to add the pigs to the list then it over writes the already written cows. I need both objects to be added to this list.

My current solution is to map each object type alone and then add them to the main object, as my actual application has ten different types currently this is not an optimal solution. I am hoping that there is a way to solve this with automapper directly.

The following time series plot with plot.zoo() shows a weird number of (only one) x-axis ticks. How can one convince plot.zoo() to show more x-axis ticks?