stfl_plot_map_est_dscale: Create a leaflet map with a diverging color scale (e.g....

In bcgov/StreamFlowTrend: Trend analysis on annual streamflow metrics from HYDAT database

Description

Create a leaflet map with a diverging color scale (e.g. slopes with diverging color scale for positive/negative) Takes a data frame of values and creates a leaflet map with dot at the co-ordinates of the plot and a diverging color scale

Usage

stfl_plot_map_est_dscale(
  data,
  label = NULL,
  circle_radius = 20,
  scale_range = c(-0.05, 0.05),
  scale_name = "Scale name",
  Value.var = "estimate",
  LONGITUDE.var = "LONGITUDE",
  LATITUDE.var = "LATITUDE"
)

Arguments

data	Data frame with values, latitude, longitude to plot, The variable names in the data.frame containing these variables are in Value.var, LONGITUDE.var, and LATITUDE.var respectively
label	Label to be displayed for each point. If this is NULL, then a default label of the station number (extracted from the data data.frame) will be created. To stop labels, set this argument to a null string, i.e. label=”.
circle_radius	Size of the circle to be plotted. You need to set the radius using the output metric of interest. For example, if you want to plot the slopes computed using the LMrob method, the circle_radius variable will be created by you based on the extracted values of the slopes.
scale_range	Endpoints of the diverging color scale. The centre of the scale will be set to the average of the end points. Values outside the scale_range will be colors according to the endpoint colors of the scale_range before plotting. For example, if you specify that the scale_range = c(-5, 5), the centre of the diverging scale will be set to 0 (average of -5 and 5). Value of trends that are < -5, will be colored as if their trend was -5. Values of trends that are >5, will be colored as if their trend was 5. So all points are plotted, but extreme trends will be colored according to the colors at the ends of the scale_range.
scale_name	Name of the scale legend
Value.var	Name of the Y variable to plot
LONGITUDE.var	Name of variable in data that is longitude
LATITUDE.var	Name of variabel in data that is latitude

Value

leaflet map.

bcgov/StreamFlowTrend documentation built on Dec. 19, 2021, 7:38 a.m.