is_rdata

Checks a file is a rdata file by inspecting the file for
so called magic bytes

Allows specification and fitting of some parameter estimation
examples inspired by time-resolved spectroscopy via a Shiny GUI.

Joris J Snellenburg

<dl><dt>filename</dt>
<dd>The filename of the file to test if it is an rdata file</dd></dl>

<dl>

<dt>filename</dt>
<dd>The filename of the file to test if it is an rdata file</dd>

</dl>