unpack

a format character according to
<a href="https://docs.python.org/3.5/library/struct.html">the python struct
library docs</a>. The following are currently supported: <code>"xbBhHiIs"</code>.

a connection returned by <code><a rd-options="base" href="/link/file?package=fitdc&version=0.0.1&to=base" data-mini-rdoc="base::file">file</a></code>.

conn

string; passed to <code><a rd-options="base" href="/link/readBin?package=fitdc&version=0.0.1&to=base" data-mini-rdoc="base::readBin">readBin</a></code>. One of
<code>"big"</code> or <code>"little"</code>.

endianness

integer; the number of records to read. Also passed to
<code><a rd-options="base" href="/link/readBin?package=fitdc&version=0.0.1&to=base" data-mini-rdoc="base::readBin">readBin</a></code>. NOTE: this argument is ignored if
<code>fmt = "I"</code>, due to the way unsigned integers have to be hacked
together.

additional arguments to be passed to <code><a rd-options="base" href="/link/readBin?package=fitdc&version=0.0.1&to=base" data-mini-rdoc="base::readBin">readBin</a></code>.

This function is exported mainly for my own benefit, but maybe
 others will find it useful. It is written to bring the python syntax for
 binary file reading to R. See the source code of this package for usage
 examples. Note a limitation of this approach to binary file reading is that
 reading and unpacking are inseparable, which can cause
 headaches in some cases.

A pure R package for decoding activity files written in the FIT ("Flexible and Interoperable Data Transfer") format. A format that is fast becoming the standard for recording running and cycling data. Details of the FIT protocol can be found at <https://www.thisisant.com/resources/fit>.

Jordan Mackie

fitdc

Garmin FIT File Decoder

unpack function

a format character according to
<a href = 'https://docs.python.org/3.5/library/struct.html'>the python struct
library docs</a>. The following are currently supported: <code>"xbBhHiIs"</code>.

a connection returned by <code><a rd-options='base' href='file'>file</a></code>.

string; passed to <code><a rd-options='base' href='readBin'>readBin</a></code>. One of
<code>"big"</code> or <code>"little"</code>.

integer; the number of records to read. Also passed to
<code><a rd-options='base' href='readBin'>readBin</a></code>. NOTE: this argument is ignored if
<code>fmt = "I"</code>, due to the way unsigned integers have to be hacked
together.

additional arguments to be passed to <code><a rd-options='base' href='readBin'>readBin</a></code>.

This function is exported mainly for my own benefit, but maybe
 others will find it useful. It is written to bring the python syntax for
 binary file reading to R. See the source code of this package for usage
 examples.

 Note a limitation of this approach to binary file reading is that
 reading and unpacking are inseparable, which can cause
 headaches in some cases.

unpack: Read and unpack bytes from a binary file connection

Description

Usage

Arguments

Value