---
title: "daytomonth: Convert Daily OHLC data of a stock to Monthly data"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{daytomonth}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}
---

```{r, include = FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)
```

## Introduction 

Convert the Daily OHLC data of a stock to Monthly data. The data frame should contain six columns named `SYMBOL`, `OPEN`, `HIGH`, `LOW`, `CLOSE`, `DATE`. 


```
library(nser)
data(dailydata)
daytomonth(dailydata)
```