README.md

In nathaneastwood/sparkts: Call Methods from the spark-ts Package

sparkts

The goal of sparkts is to provide a test bed of sparklyr extensions for the spark-ts framework which was modified from the spark-timeseries framework.

Installation

You can install sparkts from GitHub with:

# install.packages("devtools")
devtools::install_github("nathaneastwood/sparkts")

For details on how to set up for further developing the package, please see the development vignette.

Example

This is a basic example which shows you how to calculate the standard error for some time series data:

library(sparkts)

# Set up a spark connection
sc <- sparklyr::spark_connect(
  master = "local",
  version = "2.2.0",
  config = list(sparklyr.gateway.address = "127.0.0.1")
)

# Extract some data
std_data <- spark_read_json(
  sc,
  "std_data",
  path = system.file(
    "data_raw/StandardErrorDataIn.json",
    package = "sparkts"
  )
) %>%
  spark_dataframe()

# Call the method
p <- sdf_standard_error(
  sc = sc, data = std_data,
  x_col = "xColumn", y_col = "yColumn", z_col = "zColumn",
  new_column_name = "StandardError"
)

p %>% dplyr::collect()
# # A tibble: 8 x 5
#   ref       xColumn yColumn zColumn StandardError
#   <chr>     <chr>     <dbl>   <dbl>         <dbl>
# 1 000000000 200        120.     10.          10.6
# 2 111111111 300        220.     20.          14.1
# 3 222222222 400        320.     30.          16.8
# 4 333333333 500        420.     40.          19.1
# 5 444444444 600        520.     53.          22.4
# 6 555555555 700        620.     60.          22.9
# 7 666666666 800        720.     70.          24.6
# 8 777777777 900        820.     80.          26.2

# Disconnect from the spark connection
spark_disconnect(sc = sc)

nathaneastwood/sparkts documentation built on May 25, 2019, 10:34 p.m.