prepInputsCOG

An alternative fast-path inside <code>prepInputs()</code> for remote Cloud Optimized GeoTiffs.
When a URL points to a COG and the user has specified a spatial subsetting argument
(<code>to</code>, <code>cropTo</code>, or <code>maskTo</code>), this function reads only the spatial window of interest
via GDAL's <code>/vsicurl/</code> virtual filesystem — no full-file download is needed.
The returned <code>SpatRaster</code> is passed back to <code>prepInputs</code> where the normal
<code>postProcess</code> step (mask, reproject, write) completes the pipeline.
This function is called automatically from inside <code>prepInputs()</code> when
<code>getOption("reproducible.useCOG")</code> is <code>TRUE</code> (the default). It can also be
called directly.

internal

A collection of high-level, machine- and OS-independent tools
for making reproducible and reusable content in R.
The two workhorse functions are 'Cache()' and 'prepInputs()'.
'Cache()' allows for nested caching, is robust to environments and objects
with environments (like functions), and deals with some classes of
file-backed R objects e.g., from 'terra' and 'raster' packages.
Both functions have been developed to be foundational components of data
retrieval and processing in continuous workflow situations. In both functions,
efforts are made to make the first and subsequent calls of functions have
the same result, but faster at subsequent times by way of checksums
and digesting. Several features are still under development, including
cloud storage of cached objects allowing for sharing between users. Several
advanced options are available, see '?reproducibleOptions()'.

Eliot J B

reproducible

Enhance Reproducibility of R Code

Eliot J B McIntire

Alex M Chubaty

Tati Micheletti

Ceres Barros

Ian Eddy

His Majesty the King in Right of Canada, as represented by the Minister of Natural Resources Canada 

prepInputsCOG function

<dl><dt>url</dt>
<dd>Character. An HTTP(S) URL pointing to a GeoTiff file.</dd>
<dt>verbose</dt>
<dd>Numeric or Logical. Verbosity level.</dd>
<dt>...</dt>
<dd>Passed through; expected to contain at least one of <code>to</code>, <code>cropTo</code>,
or <code>maskTo</code> (a spatial object defining the area of interest).</dd></dl>

Arguments

Fast spatial subsetting of Cloud Optimized GeoTiff (COG) files — prepInputsCOG

<dl>

<dt>url</dt>
<dd>Character. An HTTP(S) URL pointing to a GeoTiff file.</dd>


<dt>verbose</dt>
<dd>Numeric or Logical. Verbosity level.</dd>


<dt>...</dt>
<dd>Passed through; expected to contain at least one of <code>to</code>, <code>cropTo</code>,
or <code>maskTo</code> (a spatial object defining the area of interest).</dd>

</dl>

prepInputsCOG: Fast spatial subsetting of Cloud Optimized GeoTiff (COG) files

Description

Usage

Value

Arguments

See Also