gradient

问题 I want to create a checkerboard pattern using gradients. I've found an example and modified it to my needs, however it only works with -moz prefix. When I remove the -moz prefix, the pattern is completely different. How can I make this -moz checkerboard pattern work with unprefixed linear-gradient ? body { background-image: linear-gradient(45deg, #808080 25%, transparent 25%), linear-gradient(-45deg, #808080 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #808080 75%), linear

问题 I've been trying to set a gradient background in a Material Button from Material Components for Android, but it's not working. So, how to set a gradient background in a Material Button? 回答1: From the documentation for MaterialButton: Do not use the android:background attribute. MaterialButton manages its own background drawable, and setting a new background means MaterialButton can no longer guarantee that the new attributes it introduces will function properly. If the default background is

问题 Since RGB needs a cube for displaying all colors there are more ways to display all the colors. I would like to have a circle displaying all the colors in a rainbow at full color - and when clicking showing all the different brightnesses for that selected color in it's own little 2D space. I want to generate something that looks like this image using canvas: My attempt for this: Javascript: function ColorPicker(element) { this.element = element; this.init = function() { var diameter = this

问题 I'm using svg to draw line charts, and require a gradient to be applied to it. For each line, I use a path element and set the stroke to one of my lineargradient elements. This works great for everything but purely horizontal lines - in this case, I get no colours on my line at all. I've made a fiddle showing the problem: http://jsfiddle.net/b6EQT/ <svg> <defs> <linearGradient id="grad" x1="0%" x2="100%" y1="0%" y2="0%"> <stop class="" offset="0%" style="stop-color: red;"></stop> <stop class=

问题 I'm using svg to draw line charts, and require a gradient to be applied to it. For each line, I use a path element and set the stroke to one of my lineargradient elements. This works great for everything but purely horizontal lines - in this case, I get no colours on my line at all. I've made a fiddle showing the problem: http://jsfiddle.net/b6EQT/ <svg> <defs> <linearGradient id="grad" x1="0%" x2="100%" y1="0%" y2="0%"> <stop class="" offset="0%" style="stop-color: red;"></stop> <stop class=

问题 In short, I have a gradient that is a mix of Dark Blue and Black. The gradient looks beautiful, however when I rotate the screen and put it in landscape, the two colors split and half of the screen has a blue background and the other half is black. Figuring I didn't do it right, I copied codes from these two sources: YouTube video https://www.youtube.com/watch?v=pabNgxzEaRk Website http://blog.apoorvmote.com/gradient-background-uiview-ios-swift/ This is my code: let topColor = UIColor(red: 28

问题 In short, I have a gradient that is a mix of Dark Blue and Black. The gradient looks beautiful, however when I rotate the screen and put it in landscape, the two colors split and half of the screen has a blue background and the other half is black. Figuring I didn't do it right, I copied codes from these two sources: YouTube video https://www.youtube.com/watch?v=pabNgxzEaRk Website http://blog.apoorvmote.com/gradient-background-uiview-ios-swift/ This is my code: let topColor = UIColor(red: 28

问题 I'm struggling to plot a gradient color scale for each facet in facet_wrap() independently. Data is too big to post it here but here is my code: ggplot(stack, aes(hour, day)) + geom_tile(aes(fill = percent), colour = "white") + facet_wrap(~author, ncol = 3) + theme_minimal() + scale_fill_distiller(palette = 'RdYlBu') + theme( axis.title.x = element_blank(), axis.title.y = element_blank(), legend.position = "none", strip.background = element_rect(fill = '#E5E6E1'), strip.text = element_text

问题 I want to replicate this in Swift.. reading further: How to draw a linear gradient arc with Qt QPainter? I've figured out how to draw a gradient inside of a rectangular view: override func drawRect(rect: CGRect) { let currentContext = UIGraphicsGetCurrentContext() CGContextSaveGState(currentContext) let colorSpace = CGColorSpaceCreateDeviceRGB() let startColor = MyDisplay.displayColor(myMetric.currentValue) let startColorComponents = CGColorGetComponents(startColor.CGColor) let endColor =

问题 I have a network made with InceptionNet, and for an input sample bx , I want to compute the gradients of the model output w.r.t. the hidden layer. I have the following code: bx = tf.reshape(x_batch[0, :, :, :], (1, 299, 299, 3)) with tf.GradientTape() as gtape: #gtape.watch(x) preds = model(bx) print(preds.shape, end=' ') class_idx = np.argmax(preds[0]) print(class_idx, end=' ') class_output = model.output[:, class_idx] print(class_output, end=' ') last_conv_layer = model.get_layer('inception