vec_read_pixel_series

Returns a numeric vector of length <code>n_time</code> — one value per time step
recorded in the file, in ascending time-stamp order.

A minimal columnar query engine with lazy execution on datasets
larger than RAM. Provides 'dplyr'-like verbs (filter(), select(), mutate(),
group_by(), summarise(), joins, window functions) and common aggregations
(n(), sum(), mean(), min(), max(), sd(), first(), last()) backed by a
pure C11 pull-based execution engine and a custom on-disk format ('.vtr').
Reads and writes 'GeoTIFF' (including tiled and 'BigTIFF' layouts) and a
tiled raster format ('.vec') with overview pyramids and time cubes for
larger-than-RAM raster data.

Gilles Colling

vectra

Columnar Query Engine for Larger-than-RAM Data

vec_read_pixel_series function

<dl><dt>r</dt>
<dd>A <code>vectra_raster</code> from <code>vec_open_raster()</code>.</dd>
<dt>x, y</dt>
<dd>Pixel coordinates. Either both <code>x</code> and <code>y</code> (CRS units; the
geotransform is used to map to col/row) or both <code>col</code> and <code>row</code>
(1-based pixel indices).</dd>
<dt>col, row</dt>
<dd>1-based pixel coordinates (alternative to x/y).</dd>
<dt>band</dt>
<dd>Band index (1-based).</dd>
<dt>level</dt>
<dd>Overview level. Default 0.</dd></dl>

Arguments

Read the full time series at a single pixel from a .vec time cube — vec_read_pixel_series

<dl>

<dt>r</dt>
<dd>A <code>vectra_raster</code> from <code>vec_open_raster()</code>.</dd>


<dt>x, y</dt>
<dd>Pixel coordinates. Either both <code>x</code> and <code>y</code> (CRS units; the
geotransform is used to map to col/row) or both <code>col</code> and <code>row</code>
(1-based pixel indices).</dd>


<dt>col, row</dt>
<dd>1-based pixel coordinates (alternative to x/y).</dd>


<dt>band</dt>
<dd>Band index (1-based).</dd>


<dt>level</dt>
<dd>Overview level. Default 0.</dd>

</dl>

vec_read_pixel_series: Read the full time series at a single pixel from a .vec time cube

Description

Usage

Value

Arguments

Details