draw

draw,character-method

draw,missing-method

Draw on a plot (map) to get a SpatVector or SpatExtent object for later use. After calling the function, start clicking on the map. When you are done, press <code>ESC</code>. You can also preset the maximum number of clicks.
Note that for many installations this does to work well on the default RStudio plotting device. To work around that, you can first run <code>dev.new(noRStudioGD = TRUE)</code> which will create a separate window for plotting, then use <code><a href="/link/plot()?package=terra&version=1.8-10" data-mini-rdoc="terra::plot()">plot()</a></code> followed by <code>draw()</code> and clicking on the map. It may also help to set your RStudio "Tools/Global Options/Appearance/Zoom" to 100

 spatial 

Methods for spatial data analysis with vector (points, lines, polygons) and raster (grid) data. Methods for vector data include geometric operations such as intersect and buffer. Raster methods include local, focal, global, zonal and geometric operations. The predict and interpolate methods facilitate the use of regression type (interpolation, machine learning) models for spatial prediction, including with satellite remote sensing data. Processing of very large files is supported. See the manual and tutorials on <https://rspatial.org/> to get started. 'terra' replaces the 'raster' package ('terra' can do more, and it is faster and easier to use).

Robert Hijmans

terra

Spatial Data Analysis

Robert J. Hijmans

Roger Bivand

Michael Chirico

Emanuele Cordano

Krzysztof Dyba

Edzer Pebesma

Barry Rowlingson

Michael D. Sumner

draw function

<dl> <dt>x</dt>
<dd>character. The type of object to draw. One of "extent", "polygon", "line", or "points"</dd> <dt>col</dt>
<dd>the color to be used</dd> <dt>lwd</dt>
<dd>the width of the lines to be drawn</dd> <dt>id</dt>
<dd>logical. If <code>TRUE</code>, a numeric ID is shown on the map</dd> <dt>n</dt>
<dd>the maximum number of clicks (does not apply when <code>x=="extent"</code> in which case <code>n</code> is always 2)</dd>
 
 <dt>xpd</dt>
<dd>logical. If <code>TRUE</code>, you can draw outside the current plotting area</dd> <dt>...</dt>
<dd>additional graphics arguments for drawing</dd></dl>

Arguments

Draw on a plot (map) to get a SpatVector or SpatExtent object for later use. After calling the function, start clicking on the map. When you are done, press <code>ESC</code>. You can also preset the maximum number of clicks.
Note that for many installations this does to work well on the default RStudio plotting device. To work around that, you can first run <code>dev.new(noRStudioGD = TRUE)</code> which will create a separate window for plotting, then use <code><a href='https://rdrr.io/r/graphics/plot.default.html'>plot()</a></code> followed by <code>draw()</code> and clicking on the map. It may also help to set your RStudio "Tools/Global Options/Appearance/Zoom" to 100

Draw a polygon, line, extent, or points — draw

<dl>

 <dt>x</dt>
<dd>character. The type of object to draw. One of "extent", "polygon", "line", or "points"</dd>

 <dt>col</dt>
<dd>the color to be used</dd>

 <dt>lwd</dt>
<dd>the width of the lines to be drawn</dd>

 <dt>id</dt>
<dd>logical. If <code>TRUE</code>, a numeric ID is shown on the map</dd>

 <dt>n</dt>
<dd>the maximum number of clicks (does not apply when <code>x=="extent"</code> in which case <code>n</code> is always 2)</dd>
 
 <dt>xpd</dt>
<dd>logical. If <code>TRUE</code>, you can draw outside the current plotting area</dd>

 <dt>...</dt>
<dd>additional graphics arguments for drawing</dd>

</dl>

draw: Draw a polygon, line, extent, or points

Description

Usage

Value

Arguments

See Also