gradient

I have experimental observations in a volume: import numpy as np # observations are not uniformly spaced x = np.random.normal(0, 1, 10) y = np.random.normal(5, 2, 10) z = np.random.normal(10, 3, 10) xx, yy, zz = np.meshgrid(x, y, z, indexing='ij') # fake temperatures at those coords tt = xx*2 + yy*2 + zz*2 # sample distances dx = np.diff(x) dy = np.diff(y) dz = np.diff(z) grad = np.gradient(tt, [dx, dy, dz]) # returns error This gives me the error: ValueError: operands could not be broadcast together with shapes (10,10,10) (3,9) (10,10,10) . EDIT: according to @jay-kominek in the comments

I wanted to ask if anyone knows how to map gradient brush on complex objects in WPF 3D. The result should look similar to 3D images in matlab (3D function for example). Lets say you have some 3-dimensional data you wish to visualize and you want to diferentiate certain levels of values by color. Given a GradientBrush defined something like this: <LinearGradientBrush x:Name="RedYellowGradient"> <GradientStop Color="Blue" Offset="0.01" /> <GradientStop Color="Purple" Offset="0.25"/> <GradientStop Color="Red" Offset="0.5"/> <GradientStop Color="Orange" Offset="0.75"/> <GradientStop Color="Yellow"

This question already has an answer here: css text gradient 4 answers Is it possible to set horizontal gradient to text via CSS? (left letter one colour, right - another colour). Yes, it is. h1 { font-size: 72px; background: -webkit-linear-gradient(left, red , yellow); background: -o-linear-gradient(right, red, yellow); background: -moz-linear-gradient(right, red, yellow); background: linear-gradient(to right, red , yellow); -webkit-background-clip: text; -webkit-text-fill-color: transparent; } <h1>Hello World</h1> 来源： https://stackoverflow.com/questions/39884260/is-it-possible-to-set

I know of several ways of adding background gradients to UIView. I was wondering what is the most efficient and scalable way of doing so, and why? Here are the techniques I've used: Create subview of UIView and overwrite the drawRect, where I draw the gradient in current context. a. When using the above gradient create it with the bounds of view I want to decorate and insert this background gradient as first subview, i.e. – insertSubview:atIndex: b. After I get the background gradient view from above, I render it in image context and use it as background image, i.e. UIGraphicsBeginImageContext

I would like to recreate a conical/circular gradient in WPF. I've looked into inheriting System.Windows.Media.GradientBrush - which can be inherited from - but uses a lot of internal plumbing to get the job done (inherited from System.Windows.Media.Brush) Any ideas on how to achieve this would be appreciated (preferrably without resorting to bitmaps) Cheers. Dan This question was asked some time back in July ( Circular Gradient and WPF ) but I didn't want to resurrect an old question. You could create a custom Effect. I would recommend downloading Shazzam you will also need the DirectX SDK.