Use Displayr's Built-In Features (Instead of Writing Code)

Custom calculations and custom variables are usually much, much slower than using the in-built features in Displayr. This article describes:

• Why Displayr's in-built features are faster
• The most common in-built features that you should be using

Why Displayr's in-built features are faster

Displayr's in-built features typically calculate things much faster than when users write custom code because:

• The Displayr code is optimized. For example, our code for calculating percentages and averages is heavily optimized.
• The underlying technology is faster. Displayr's in-built calculations use languages and other technologies that are much faster (e.g., C++, bit calculations).
• Users that write their own code tend to make errors. 
• It takes longer to write code than to use Displayr's in-built features.

Common in-built features that are not used in many slow documents

The following features are almost always much, much faster when used by clicking and dragging than when a user writes their own code:

1. Store data in data sets if you plan to use the data to create multiple tables or other analyses.
2. Group variables into variable sets
3. Create tables and crosstabs by dragging and dropping. See also Use Displayr's Native Tables.
4. Create New Variables by Duplicating and Modifying Original Variables (e.g., changing their values, merging categories), rather than by writing custom code or ready-made new variables.
5. Create and apply filters using the graphical user interface.
6. Create and apply weights using the graphical user interface.
7. Deal with missing values using other Missing Values settings for a variable (in the object inspector, press Missing values).
8. Use Data File Relationship(s) rather than writing joins in code.
9. Use Variable Sets rather than variables when referencing data in R code (unless the variable set will involve selecting variables that are not required).