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How to save a plot as image on the disk?
...tion is to use dev.copy:
X11 ()
plot (x,y)
dev.copy(jpeg,filename="plot.jpg");
dev.off ();
If you reach a clutter of too many plot windows in R, use graphics.off() to close all of the plot windows.
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Create an empty object in JavaScript with {} or new Object()?
...o:
var myObject = {
title: 'Frog',
url: '/img/picture.jpg',
width: 300,
height: 200
};
Arrays
For arrays, there's similarly almost no benefit to ever using new Array(); over []; - with one minor exception:
var emptyArray = new Array(100);
creates a 1...
Difference between sh and bash
...e time to come).
Bash supports <<<'here strings'.
Bash has *.{png,jpg} and {0..12} brace expansion.
~ refers to $HOME only in Bash (and more generally ~username to the home directory of username).This is in POSIX, but may be missing from some pre-POSIX /bin/sh implementations.
Bash has proc...
Format string, integer with leading zeros
...
Use the format string "img_%03d.jpg" to get decimal numbers with three digits and leading zeros.
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为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...文网文档：https://www.fun123.cn/reference/extensions/aix_dev.html
为什么需要开发拓展？App Inventor 2 是积木式在线安卓开发环境，利用拖拽式的方式实现代码块堆叠，从而完成相应的逻辑。上手很容易，但是由于代码块提供的功能有限，...
How to save an image to localStorage and display it on the next page?
...vas.toDataURL("image/png");
return dataURL.replace(/^data:image\/(png|jpg);base64,/, "");
}
Then, on my next page I created an image with a blank src like so:
<img src="" id="tableBanner" />
And straight when the page loads, I use these next three lines to get the Base64 string from ...
从Sloodle看三维虚拟学习环境的发展趋势 - 资讯 - 清泛网 - 专注C/C++及内核技术
...像 ,从音/视频二维媒体到三维图形媒体 ,以虚拟现实技术为代表的新兴计算机技术正在向各个领域渗透和拓展。
而且随着计算机性能的快速提升 ,以往在专用的图形工作站上才能运行与使用的三维实时渲染技术 ,现在已经可以...
How to check if a file exists in Documents folder?
... path with folder name
_imageName = [_imageName stringByAppendingString:@".jpg"];//Assign image name
imagePath= [imagePath stringByAppendingPathComponent:_imageName];
NSLog(@"%@", imagePath);
//Method 1:
BOOL file = [[NSFileManager defaultManager] fileExistsAtPath: imagePath];
if (file == NO){
...
Can't install PIL after Mac OS X 10.9
...ow
Try this to check it:
from PIL import Image
image = Image.open("file.jpg")
image.show()
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How to call any method asynchronously in c#
...Indian%20%20Celebrities(F)/Jacqueline%20Fernandez/jacqueline-fernandez-18a.jpg");
}
private void LoadImageAsynchronously(string url)
{
/*
This is a classic example of how make a synchronous code snippet work asynchronously.
A class implements a method synchronous...