从序列列表中创建数据框

Question

使用序列列表，例如

// Dependencies
var express = require("express");
var bodyParser = require("body-parser");
var mongoose = require("mongoose");
var exphbs = require("express-handlebars");
var request = require("request");

// Set mongoose to leverage built in JavaScript ES6 Promises
mongoose.Promise = Promise;


// Initialize Express
var app = express();

// Use morgan and body parser with our app
app.use(bodyParser.urlencoded({
  extended: false
}));

// Make public a static dir
app.use(express.static(__dirname + "/public"));

app.engine("handlebars", exphbs({ defaultLayout: "main" }));
app.set("view engine", "handlebars");

// Database configuration with mongoose
mongoose.connect("mongodb://localhost/usersdb");
var db = mongoose.connection;

// Show any mongoose errors
db.on("error", function(error) {
  console.log("Mongoose Error: ", error);
});

// Once logged in to the db through mongoose, log a success message
db.once("open", function() {
  console.log("Mongoose connection successful.");
});


//routes

app.get('/', function(req, res, next, error){
	// Log any errors
    if (error) {
      console.log(error);
    }
    // Or send the doc to the browser as a json object
    else {
    res.render("index",{ title: 'Express' });
      }
});




// Listen on port 27107
app.listen(process.env.PORT || 27017, function() {
  console.log("App running on port 27017!");
});

是否可以创建数据框以便将序列转换为列。如，

datList <- list(One = seq(1,5, length.out = 20),
                Two = seq(1,10, length.out = 20),
                Three = seq(5,50, length.out = 20))

在我的“真实”数据的上下文中，我正在处理许多序列，希望可以使用datDF <- data.frame(One = datList[[1]], Two = datList[[2]], Three = datList[[3]] ) > head(datDF) One Two Three 1 1.000000 1.000000 5.000000 2 1.210526 1.473684 7.368421 3 1.421053 1.947368 9.736842 4 1.631579 2.421053 12.105263 5 1.842105 2.894737 14.473684 6 2.052632 3.368421 16.842105 （或类似）函数，而不是手动创建所需的数据框。

Answer 1

我们可以使用data.frame

datDFN <- data.frame(datList)
identical(datDF, datDFN)
#[1] TRUE