There are different types of gradients, including the horizontal gradient, here are a few examples with gradients in the horizontal direction of the gradient!The gradient as a horizontal!
In a graphic software for digital image processing, the term color gradient is also used for a gradual color mixing and is often referred to as a gradient! But what does it tell you about the gradient, whether it is horizontal or vertical, here are a few examples with horizontal gradient! Content / examples: 1.) ... A red into the blue gradient.

(Image1) Red into the blue gradient horizontally! 
The gradient of the image is one of the fundamental building blocks of image processing!
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2.) Horizontal purple / yellow gradient.
(Image2) Gradient horizontal purple to yellow 
An image gradient is a change in direction in intensity, or color, in an image.
3.) Green to black as a horizontal gradient!
(Image3) Gradient from green to black tone horizontally! 
Mathematically, the gradient of a function with two variables at each pixel is a vector with the components given by the derivatives in the horizontal direction.
FAQ 117: Updated on: 28 June 2020 17:14