karthik

# We'll use the httr library to make web calls
library(httr) 
library(rjson) # to parse the json
library(plyr) # to convert lists to data.frames
library(assertthat) # To make assertions for right inputs
# If you don't have these packages run:
# install.packages(c("httr", "plyr", "rjson", "assertthat"))

karthik

if(!require(testthat)) {
	install.package("testthat")
}

library(testthat)
# If you're going to require dplyr it would make sense to have students be on at least version 3.
expect_equal(R.version$major, "3")
package_list <- installed.packages (fields = c ("Package", "Version"))
# Next check to see that people have at least the major versions of key packages

karthik

CRAN maintainers now require that examples not be boxed in by the \dontrun{ tags. Since most of rOpenSci's packages retrieve data from the web, this can be problematic, especially if the API requires a key. But in cases where a key isn't required, I'm fine with allowing the examples to run.

When I use dplyr::rbind_all(list_name) over do.call(rbind, list_name) to combine data.frames, I get this issue when running a devtools::check().

> ### ** Examples
> 
> data_by_code <- aw_code(code = "casent0104669")
Warning in rbind_all(image_data) :
  Unequal factor levels: coercing to character

karthik

List of packages we need on rOpenSci's new Rstudio Server

---

Please add to list as needed

• rgbif
• ggplot2
• plyr
• dplyr

karthik

karthik

setwd("~/Desktop")
library(ecoengine)
library(plyr)
library(lubridate)
library(dplyr)
# rMaps is not available on CRAN yet.
# Install from here: https://github.com/ropensci/rmaps#installation
library(rMaps)

# I do not recommend running the next code block unless you have 20+ minutes to spare.

karthik

karthik

Here are two ways to combine data from large requests to ecoengine

Method 1 (trivial)

library(ecoengine)
library(plyr)

karthik

# Since these aren't in the package yet, first run

library(scales)
library(ggplot2)
library(dplyr)
library(wordcloud)

library(git2r) 
# devtools::install_github("ropensci/git2r")

karthik

* installing *source* package 'git2r' ...
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed