# Solutions to Common R Problems

- How to Create a Dynamic Bullet-Point List in Displayr Using R
- How to Quickly Make Data Long or Wide Using R
- How to Standardize or Calculate Data within Subgroups in R
- How to Change Font Color Based on Data Using R
- How to Handle Outputs with Small or No Data using R
- How to Create a New Variable Based on Other Variables using R
- How to Share Custom R Functions in Displayr
- How to Calculate Jaccard Coefficients in Displayr Using R
- How to Work with Date Ranges Using R
- How to Work with R Loops
- How to Merge Mutually Exclusive Data Using R
- How to use the Filter(s) Dropdown to Quickly Filter R Outputs using QFilter
- How to Change Table Attributes in R Tables
- How to De-duplicate Raw Data Using R
- How to Filter Raw Data Using R
- How to Recode Data Based on a Lookup Using R
- How to Work with Regular Expressions Using R
- How to Extract Information from an R Object
- How to Work with Aggregated Dates Using R
- How to Aggregate Data Using R
- How to Create Long-Format Aggregated Data Using R
- How to Calculate Cronbach's Alpha on a Numeric Variable Set