Numpy Resize/Rescale Image

Yeah, you can install opencv (this is a library used for image processing, and computer vision), and use the cv2.resize function. And for instance use: import cv2 import numpy as np img = cv2.imread(‘your_image.jpg’) res = cv2.resize(img, dsize=(54, 140), interpolation=cv2.INTER_CUBIC) Here img is thus a numpy array containing the original image, whereas res is a … Read more

How to create a JavaScript callback for knowing when an image is loaded?

.complete + callback This is a standards compliant method without extra dependencies, and waits no longer than necessary: var img = document.querySelector(‘img’) function loaded() { alert(‘loaded’) } if (img.complete) { loaded() } else { img.addEventListener(‘load’, loaded) img.addEventListener(‘error’, function() { alert(‘error’) }) } Source: http://www.html5rocks.com/en/tutorials/es6/promises/

Fit Image in ImageButton in Android

I want them to cover 75% of the button area. Use android:padding=”20dp” (adjust the padding as needed) to control how much the image takes up on the button. but where as some images cover less area, some are too big to fit into the imageButton. How to programatically resize and show them? Use a android:scaleType=”fitCenter” … Read more

How to set size for local image using knitr for markdown?

The question is old, but still receives a lot of attention. As the existing answers are outdated, here a more up-to-date solution: Resizing local images As of knitr 1.12, there is the function include_graphics. From ?include_graphics (emphasis mine): The major advantage of using this function is that it is portable in the sense that it … Read more

Does SVG support embedding of bitmap images?

Yes, you can reference any image from the image element. And you can use data URIs to make the SVG self-contained. An example: <svg xmlns=”http://www.w3.org/2000/svg” xmlns:xlink=”http://www.w3.org/1999/xlink”> … <image width=”100″ height=”100″ xlink:href=”data:image/png;base64,IMAGE_DATA” /> … </svg> The svg element attribute xmlns:xlink declares xlink as a namespace prefix and says where the definition is. That then allows the … Read more

How can I set a website image that will show as preview on Facebook?

1. Include the Open Graph XML namespace extension to your HTML declaration <html xmlns=”http://www.w3.org/1999/xhtml” xmlns:fb=”http://ogp.me/ns/fb#”> 2. Inside your <head></head> use the following meta tag to define the image you want to use <meta property=”og:image” content=”fully_qualified_image_url_here” /> Read more about open graph protocol here. After doing the above, use the Facebook “Object Debugger” if the image … Read more

Label under image in UIButton

Or you can just use this category: ObjC @interface UIButton (VerticalLayout) – (void)centerVerticallyWithPadding:(float)padding; – (void)centerVertically; @end @implementation UIButton (VerticalLayout) – (void)centerVerticallyWithPadding:(float)padding { CGSize imageSize = self.imageView.frame.size; CGSize titleSize = self.titleLabel.frame.size; CGFloat totalHeight = (imageSize.height + titleSize.height + padding); self.imageEdgeInsets = UIEdgeInsetsMake(- (totalHeight – imageSize.height), 0.0f, 0.0f, – titleSize.width); self.titleEdgeInsets = UIEdgeInsetsMake(0.0f, – imageSize.width, – (totalHeight … Read more

Adjust list style image position?

Not really. Your padding is (probably) being applied to the list item, so will only affect the actual content within the list item. Using a combination of background and padding styles can create something that looks similar e.g. li { background: url(images/bullet.gif) no-repeat left top; /* <– change `left` & `top` too for extra control … Read more

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