download

问题 I have a lot of files I need to download. I am using download.file() function and furrr::map to download in parallel, with plan(strategy = "multicore") . Please advise how can I load more jobs for each future? Running on Ubuntu 18.04 with 8 cores. R version 3.5.3. The files can be txt, zip or any other format. Size varies in range of 5MB - 40MB each. 回答1: Using furrr works just fine. I think what you mean is furrr::future_map . Using multicore substantially increases the downloading speed (

问题 In Shiny Dashboard in a Tab I am plotting graphs one below the another, based on the selection of checkbox inputs. When the check boxes are selected accordingly the graphs will get displayed one below the another. Kindly find the code below which i used. library(shiny) library(shinydashboard) library(shinyWidgets) library(dplyr) d <- data.frame( year = c(1995, 1995, 1995, 1996, 1996, 1996, 1997, 1997, 1997), Product_Name = c( "Table", "Chair", "Bed", "Table", "Chair", "Bed", "Table", "Chair",

问题 I am reading from the history database, and for every URL read, I am downloading it and storing the data into a string. I want to be able to determine if the link is a download link, i.e. .exe or .zip for e.g. I am assuming I need to read the headers to determine this, but I don't know how to do it with WebClient. Any suggestions? while (sqlite_datareader.Read()) { noIndex = false; string url = (string)sqlite_datareader["url"]; try { if (url.Contains("http") && (!url.Contains(".pdf")) && (

问题 I am having some trouble implementing a pipeline in which the first step is downloading the data from some server. As far as I understand, all rules must have inputs which are files. However, in my case the "input" is an ID string given to a script which accesses the server and downloads the data. I am aware of the remote files option in snakemake, but the server I am downloading from (ENA) is not on that list. Moreover, I am using a script which calls aspera in order to improve download

问题 I am having some trouble implementing a pipeline in which the first step is downloading the data from some server. As far as I understand, all rules must have inputs which are files. However, in my case the "input" is an ID string given to a script which accesses the server and downloads the data. I am aware of the remote files option in snakemake, but the server I am downloading from (ENA) is not on that list. Moreover, I am using a script which calls aspera in order to improve download

问题 I’ve got a Shiny app in which I’d like to accomplish the following: 1) User presses a button 2) A data frame gets exported to a .csv, saved in either the working directory (with server.R and ui.R), or ideally one level down. I want this to happen automatically, because eventually I’m going to connect it with a checkboxGroupboxInput to loop through the data and produce a set of filtered .csv. Here is the closest I can currently get, with fileToDownload representing my data frame: ui.R:

问题 I want to download (or if you wanna say synchronize) the whole content of an FTP server with my local directory. I am already able to download the files and create the directories at the "first layer". But I don't know how to realize the subfolders and files in these. I just cant get a working loop. Can someone help me? Thanks in advance. Here's my code so far: FTPFile[] files = ftp.listFiles(); for (FTPFile file : files){ String name = file.getName(); if(file.isFile()){ System.out.println

问题 I want to download (or if you wanna say synchronize) the whole content of an FTP server with my local directory. I am already able to download the files and create the directories at the "first layer". But I don't know how to realize the subfolders and files in these. I just cant get a working loop. Can someone help me? Thanks in advance. Here's my code so far: FTPFile[] files = ftp.listFiles(); for (FTPFile file : files){ String name = file.getName(); if(file.isFile()){ System.out.println

问题 I'm using angular to download big files, for the backend I'm using spring boot, here's the code of the end point: @RequestMapping(value = "/download", method = RequestMethod.GET) public StreamingResponseBody download(@PathVariable String path) throws IOException { final InputStream file =azureDataLakeStoreService.readFile(path); return (os) -> { readAndWrite(file , os); }; } private void readAndWrite(final InputStream is, OutputStream os) throws IOException { byte[] data = new byte[2048]; int

问题 Is there a way to download a file, generated dynamically in memory in Blazor Server Side without need to store it on a filesystem? 回答1: The solution was in adding Web Api contoller into Blazor server side app. Add Controllers/DownloadController.cs controller to the root of Blazor app: [ApiController, Route("api/[controller]")] public class DownloadController : ControllerBase { [HttpGet, Route("{name}")] public ActionResult Get(string name) { var buffer = Encoding.UTF8.GetBytes("Hello! Content