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Saving grid.arrange() plot to file
... anything but returns a grob g, that you can pass to ggsave(file="whatever.pdf", g).
The reason it works differently than with ggplot objects, where by default the last plot is being saved if not specified, is that ggplot2 invisibly keeps track of the latest plot, and I don't think grid.arrange sho...
Find the extension of a filename in Ruby
...t's really basic stuff:
irb(main):002:0> accepted_formats = [".txt", ".pdf"]
=> [".txt", ".pdf"]
irb(main):003:0> File.extname("example.pdf") # get the extension
=> ".pdf"
irb(main):004:0> accepted_formats.include? File.extname("example.pdf")
=> true
irb(main):005:0> accepted_f...
云数据及Firebase组件简介 · App Inventor 2 中文网
...简介
1 月 24 日：Firebase 组件和云数据是 App Inventor 的一项实验性功能。 我们正在发布一些初步文档，以便人们可以在我们开发此功能时尝试该功能。 我们欢迎并鼓励您以此构建应用程序以供实验使用，但请注意，行为可能会发...
Website screenshots
... outputs it in a ps file (ghostscript), then, convert it in a .jpg, .png, .pdf.. can be little slower with complex pages (and don't support all the CSS).
Else, you can use wkhtmltopdf to output a html page in pdf, jpg, whatever..
Accept CSS2.0, use the webkit (safari's wrapper) to render the page.....
Attach a file from MemoryStream to a MailMessage in C#
...tem.Net.Mime.MimeTypeNames like System.Net.Mime.MediaTypeNames.Application.Pdf
Based on Mime Type you need to specify correct extension in FileName for instance "myFile.pdf"
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How to download all files (but not HTML) from a website using wget?
...
To filter for specific file extensions:
wget -A pdf,jpg -m -p -E -k -K -np http://site/path/
Or, if you prefer long option names:
wget --accept pdf,jpg --mirror --page-requisites --adjust-extension --convert-links --backup-converted --no-parent http://site/path/
This ...
App Inventor 2 串口调试 App 全方案技术调研 - App应用开发 - 清泛IT社区，为创新赋能！
...alized 状态属性
局限性：
- 不支持端口选择（自动打开第一个 USB 设备）
- 不支持数据位/停止位/校验位设置
- 无事件回调（需 Clock 轮询读取）
- 仅文本模式，二进制支持较弱
- 不支持 PL2303 芯片
二、六大技术方案全...
Execute a command line binary with Node.js
...ec:
var exec = require('child_process').exec;
var cmd = 'prince -v builds/pdf/book.html -o builds/pdf/book.pdf';
exec(cmd, function(error, stdout, stderr) {
// command output is in stdout
});
If you need to use handle process I/O with streams, such as when you are expecting large amounts of ou...
How do I determine file encoding in OS X?
...lla OSX Yosemite, it yields more precise results than "file -I":
$ file -I pdfs/udocument0.pdf
pdfs/udocument0.pdf: application/pdf; charset=binary
$ vic pdfs/udocument0.pdf
latin1
$
$ file -I pdfs/t0.pdf
pdfs/t0.pdf: application/pdf; charset=us-ascii
$ vic pdfs/t0.pdf
utf-8
...
Capture HTML Canvas as gif/jpg/png/pdf?
...ible to capture or print what's displayed in an html canvas as an image or pdf?
12 Answers
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