Mar 30, 2019 Gradient varies with age and FiO2: FiO2 0.21 – 7 mmHg in young, 14 mmHg in elderly; FiO2 1.0 – 31 mmHg in young, 56 mmHg in elderly; For every decade a person has lived, their A–a gradient is expected to increase by 1 mmHg – a conservative estimate of normal A–a gradient is. Dec 21, 2017 Figure 2: Gradient descent with different learning rates.Source. The most commonly used rates are: 0.001, 0.003, 0.01, 0.03, 0.1, 0.3. Make sure to scale the data if it’s on a very different scales. If we don’t scale the data, the level curves (contours) would be narrower and taller which means it would take longer time to converge (see figure 3).
A curated collection of awesome gradients made in Dart (port of https://webgradients.com for Flutter). Only linear gradients included for now.
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Installation
Add the Package
Import the package
How To Use
For LinearGradient
By default FlutterGradient
will generates the LinearGradient
.
or
For RadialGradient
You can customize the follows values :
- center : The center of the gradient, as an offset into the (-1.0, -1.0) x (1.0, 1.0) square describing the gradient which will be mapped onto the paint box.
- radius : The radius of the gradient, as a fraction of the shortest side of the paint box.
- tileMode : How this gradient should tile the plane beyond the outer ring at
radius
pixels from thecenter
.
For SweepGradient
You can customize the follows values :
- center : The center of the gradient, as an offset into the (-1.0, -1.0) x (1.0, 1.0) square describing the gradient which will be mapped onto the paint box.
- startAngle : The angle in radians at which stop 0.0 of the gradient is placed.
- endAngle : The angle in radians at which stop 1.0 of the gradient is placed.
- tileMode : How this gradient should tile the plane beyond the outer ring at
radius
pixels from thecenter
.
Catalogue
1 | 2 | 3 |
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Examples
Web and command-line examples can be found in the example
folder.
Web Examples
In order to run the web examples, please follow these steps:
- Clone this repo and enter the directory
- Run
pub get
- Run
pub run build_runner serve example
- Navigate to http://localhost:8080/web/ in your browser
Command Line Examples
In order to run the command line example, please follow these steps:
- Clone this repo and enter the directory
- Run
pub get
- Run
dart example/lib/main.dart
Flutter Example
Install Flutter

In order to run the flutter example, you must have Flutter installed. For installation instructions, view the onlinedocumentation.
Run the app
- Open up an Android Emulator, the iOS Simulator, or connect an appropriate mobile device for debugging.
- Open up a terminal
cd
into theexample/lib/
directory- Run
flutter doctor
to ensure you have all Flutter dependencies working. - Run
flutter packages get
- Run
flutter run
This example shows how to use the LinearGradientBrush class to paint an area with a linear gradient. In the following example, the Fill of a Rectangle is painted with a diagonal linear gradient that transitions from yellow to red to blue to lime green.
Example
The following illustration shows the gradient created by the previous example.
To create a horizontal linear gradient, change the StartPoint and EndPoint of the LinearGradientBrush to (0,0.5) and (1,0.5). In the following example, a Rectangle is painted with a horizontal linear gradient.
The following illustration shows the gradient created by the previous example.
To create a vertical linear gradient, change the StartPoint and EndPoint of the LinearGradientBrush to (0.5,0) and (0.5,1). In the following example, a Rectangle is painted with a vertical linear gradient.
The following illustration shows the gradient created by the previous example.

Gradient 1.0 0
Note
Gradient 1.0 Full
The examples in this topic use the default coordinate system for setting start points and end points. The default coordinate system is relative to a bounding box: 0 indicates 0 percent of the bounding box, and 1 indicates 100 percent of the bounding box. You can change this coordinate system by setting the MappingMode property to the value BrushMappingMode.Absolute. An absolute coordinate system is not relative to a bounding box. Values are interpreted directly in local space.
Fx Gradient 1.0
For additional examples, see Brushes Sample. For more information about gradients and other types of brushes, see Painting with Solid Colors and Gradients Overview.