akima_bilinear: Bilinear data.frame interpolation

In gopalpenny/ggp: General functions for coding assistance

Bilinear data.frame interpolation

Description

Interpolated on a grid using akima interpolation

Usage

akima_bilinear(df, out_dim)

Arguments

df	data.frame containing gridded x, y locations and z values
out_dim	vector containing c(nx, ny) as number of x and y output locations

Details

The data.frame df must contain columns for x, y, and z. The x and y values must be on a grid.

Interpolation is done using akima::bilinear

Examples

library(ggplot2)
library(ggp)
df <- expand.grid(x=1:5,y=1:5)
df$z <- df$x^2 + df$y^2
df_out <- akima_bilinear(df, c(100,100))
ggplot(df) + geom_raster(aes(x,y,fill=z)) + coord_equal()
ggplot(df_out) + geom_raster(aes(x,y,fill=z)) + coord_equal()

gopalpenny/ggp documentation built on Oct. 22, 2023, 10:13 p.m.