map_observations: Generate heatmap for the number of observations within...

In VtEcostudies/VTatlas: Process data from VAL's API

Description

Generate heatmap for the number of observations within polygons

Usage

map_observations(
  query,
  polygons,
  number_obs = TRUE,
  seq_by = NULL,
  cols = NULL,
  plot_results = FALSE
)

Arguments

query	list of query terms list('order:Odonata','etc')
polygons	shapefile of POLYGON or MULTIPOLYGON, can be either an sf object or SpatialPolygons or SpatialPolygonsDataFrame
seq_by	an integer used to 'group' the number of observations. Defaults to 10
cols	should be a vector of colors used for the color ramp
plot_results	boolean. When TRUE a simple plot is returned.

Value

polygon with NumObs and when plot_results=TRUE a map of the number of observations

See Also

queryAPI for description of fields and which fields can be queried

Examples

## Not run: 
SurveyBlocks <- sf::st_read("VT_survey_block_WGS.shp", quiet = TRUE)
z <- map_observations(query = list("order:Odonata"),
                          polygons = SurveyBlocks,
                          seq_by = 10,
                          cols = c("gray","blue","firebrick"))
## End(Not run)

VtEcostudies/VTatlas documentation built on Dec. 18, 2021, 6:20 p.m.