Gharial Crocodiles

Head and Body length of gharial crocodiles. These data were collected in order to estimate the length of the Sarcosuchus imperator, nicknamed ‘SuperCroc.’ Sarcosuchus is a large creature that lived about 112 million years ago. It seems to resemble modern crocodiles, even though it is currently believed that Sarcosuchus is not an ancestor of extant crocodiles. A complete skeleton of Sarcosuchus has not yet been discovered, but a remarkably complete skull and other bones from a large specimen of this species were found in Niger, Africa. These fossils are in the collections of the Musée National du Niger (MNN). This is the largest verified Sarcosuchus skull. Unfortunately, many of the tail bones have not been recovered, making a positive determination of the length of Sarcosuchus impossible. Because the skull length of Sarchosuchus is known, the researchers wanted to use the head-to-body length ratios of modern crocodiles to estimate the body length of Sarcosuchus. The skull shape is similar to Gavialis gangeticus and Crocodylus porosus, so those species were used for estimation. Additional Information: 96-minute National Geographic SuperCroc video can be found at snagfilms.com: http://www.snagfilms.com/films/title/supercroc/ or at AOL Video: http://video.aol.com/video-detail/supercroc/36028815056645860 Bones are illustrated at http://www.supercroc.org/supercroc/anatomy.htm Original article can be accessed here: https://adam.byui.edu/cgi-bin/remoteauth-byui.pl?url=http://www.sciencemag.org/cgi/content/full/294/5546/151 For PDF format: https://adam.byui.edu/cgi-bin/remoteauth-byui.pl?url=http://www.sciencemag.org/cgi/reprint/294/5546/1516.pdf
MATH221
animals
Author

MATH 221

Published

April 29, 2024

Data details

There are 17 rows and 4 columns. The data source1 is used to create our data that is stored in our pins table. You can access this pin from a connection to posit.byui.edu using hathawayj/gharial_crocodiles.

This data is available to all.

Variable description

  • Species: Crocodile species
  • CommonName: Crocodile common name
  • HeadLength: Length of crocodile head (cm)
  • BodyLength: Length of crocodile body (cm)

Variable summary

Variable type: numeric

skim_variable n_missing complete_rate mean sd p0 p25 p50 p75 p100 hist
HeadLength 0 1 50.45 14.40 32.3 38.2 51 61 83 ▇▅▃▂▁
BodyLength 0 1 303.94 108.08 177.0 209.0 311 382 548 ▇▃▆▁▂

Variable type: character

skim_variable n_missing complete_rate min max empty n_unique whitespace
Species 0 1 19 19 0 1 0
CommonName 0 1 14 14 0 1 0
Explore generating code using R
library(tidyverse)
library(pins)
library(connectapi)

gharial_crocodiles <- read_csv('https://github.com/byuistats/data/raw/master/GharialCrocodiles/GharialCrocodiles.csv')


# Publish the data to the server with Bro. Hathaway as the owner.
board <- board_connect()
pin_write(board, gharial_crocodiles, type = "parquet", access_type = "all")

pin_name <- "gharial_crocodiles"
meta <- pin_meta(board, paste0("hathawayj/", pin_name))
client <- connect()
my_app <- content_item(client, meta$local$content_id)
set_vanity_url(my_app, paste0("data/", pin_name))

Access data

This data is available to all.

Direct Download: gharial_crocodiles.parquet

R and Python Download:

URL Connections:

For public data, any user can connect and read the data using pins::board_connect_url() in R.

library(pins)
url_data <- "https://posit.byui.edu/data/gharial_crocodiles/"
board_url <- board_connect_url(c("dat" = url_data))
dat <- pin_read(board_url, "dat")

Use this custom function in Python to have the data in a Pandas DataFrame.

import pandas as pd
import requests
from io import BytesIO

def read_url_pin(name):
  url = "https://posit.byui.edu/data/" + name + "/" + name + ".parquet"
  response = requests.get(url)
  if response.status_code == 200:
    parquet_content = BytesIO(response.content)
    pandas_dataframe = pd.read_parquet(parquet_content)
    return pandas_dataframe
  else:
    print(f"Failed to retrieve data. Status code: {response.status_code}")
    return None

# Example usage:
pandas_df = read_url_pin("gharial_crocodiles")

Authenticated Connection:

Our connect server is https://posit.byui.edu which you assign to your CONNECT_SERVER environment variable. You must create an API key and store it in your environment under CONNECT_API_KEY.

Read more about environment variables and the pins package to understand how these environment variables are stored and accessed in R and Python with pins.

library(pins)
board <- board_connect(auth = "auto")
dat <- pin_read(board, "hathawayj/gharial_crocodiles")
import os
from pins import board_rsconnect
from dotenv import load_dotenv
load_dotenv()
API_KEY = os.getenv('CONNECT_API_KEY')
SERVER = os.getenv('CONNECT_SERVER')

board = board_rsconnect(server_url=SERVER, api_key=API_KEY)
dat = board.pin_read("hathawayj/gharial_crocodiles")