---
title: "Introducing Rblpapi"
author: "Dirk Eddelbuettel"
date: "2015-08-13"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{Introducing Rblpapi}
  %\VignetteEngine{knitr::rmarkdown}
  \usepackage[utf8]{inputenc}
---

## Introduction

The [Rblpapi package](https://github.com/Rblp/Rblpapi) connects the
[R language and environment for statistical computing](https://www.r-project.org)
to the [Bloomberg](https://www.bloomberg.com) services supported by the
[official Bloomberg APIs](https://www.bloomberg.com/professional/support/api-library/).

The [Rblpapi package](https://github.com/Rblp/Rblpapi) is provided in both
source and binary (for Windows and OS X) via the
[CRAN](https://cran.r-project.org) network for R.  Source code is available
[at the corresponding GitHub repo](https://github.com/Rblp/Rblpapi); the
[blp repo](https://github.com/Rblp/blp) contains the Bloomberg API components
required during the build.

## Usage

The next few section illustrate key functions within the package. All
functions also have proper help pages for fuller details.

### Package Load

Use

```{r, eval=FALSE}
library(Rblpapi)
````

to load the package.  You can also set options which will
automatically connect at package load; see the next section.

### Connecting

Use

```{r, eval=FALSE}
blpConnect()
```

which will connect to the Bloomberg backend. Default values for the IP
address (127.0.0.1) and port (8194) are used and can be overridden both as
function arguments and via global options `blpHost` and `blpPort`.  Moreover,
if option `blpAutoConnect` is set to `TRUE`, this connection is done at
package load.

The resulting connection object is stored in a per-package environment providing
a default value.  If needed it can be overridden in each accessor function.

As the connection object is being held onto, the `blpDisconnect()`
function is implemented as an empty function without side-effects.  The internal
function `defaultConnection()` returns the current connection object.

### bdp: Bloomberg Data Point

Current (or most recent) values of market-related instruments can be accessed
via the `bdp()` function:

```{r, eval=FALSE}
bdp(c("ESA Index", "SPY US Equity"), c("PX_LAST", "VOLUME"))
```

### bds: Bloomberg Data Set 

The `bds()` function can retrieve data of a more static nature:

```{r, eval=FALSE}
bds("GOOG US Equity", "TOP_20_HOLDERS_PUBLIC_FILINGS")
```

### bdh: Bloomberg Data History

Historical data (at a daily granularity) can be retrieved with `bdh()`:

```{r, eval=FALSE}
bdh("SPY US Equity", c("PX_LAST", "VOLUME"), start.date=Sys.Date()-31)
```

### getBars: OHLCV Aggregates

The `getBars()` function retrieves aggregated Open / High / Low /
Close / Volume data. For example, in

```{r, eval=FALSE}
getBars("ES1 Index")
```

the default values of six hourly bars for the lead ES future.

### getTicks: Transactional Tick Data


The `getTicks()` function retrieves tickdata, albeit with timestamps
at a minute granularity.  For example, the call

```{r, eval=FALSE}
getTicks("ES1 Index")
```

retrieves all ticks for the given security over the last hour. 

### fieldSearch: Query For Fields

The `fieldSearch()` helper function can search for available fields
which can be used with the `bdp()`, `bdh()` or `bds()` functions. For example,

```{r, eval=FALSE}
res <- fieldSearch("vwap")
```

search for fields describing volume-weighted average price fields

### beqs: Bloomberg EQS Queries

The `beqs()` function (which was contribued by Rademeyer Vermaak) can access
EQS functionality: 

```{r, eval=FALSE}
beqs("Global Oil Companies YTD Return","GLOBAL")
```

## Acknowledgements

Most valuable contributions from both
[Jonathan Owen](https://github.com/jrowen) (who kick-started builds on
Windows when we considered these to be impossible) and
[Jeroen Ooms](https://jeroenooms.github.io/) (who took care of builds on OS
X) are gratefully acknowledged.

## Legal

All trademarks and registered trademarks are the property of their respective owners.

All code of the [Rblpapi package](https://github.com/Rblp/Rblpapi) (ie
directories `src/`, `R/`, ...) is released under the
[GNU GPL-3](http://www.gnu.org/licenses/gpl-3.0.en.html).

All code retrieved from the [blp](https://github.com/Rblp/blp) repository
during build is released by Bloomberg, available at the
[Bloomberg API](https://www.bloomberg.com/professional/support/api-library/) site
and released under the license included below.

```
Copyright 2012. Bloomberg Finance L.P.

Permission is hereby granted, free of charge, to any person obtaining a copy of
this proprietary software and associated documentation files (the "Software"),
to use, publish, or distribute copies of the Software, and to permit persons to
whom the Software is furnished to do so.

Any other use, including modifying, adapting, reverse engineering, decompiling,
or disassembling, is not permitted.

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
```
