writePixel

Write the specified color to an individual pixel at the specified column and row of LED Matrix

Syntax

writePixel(mysh,pixelLocation,pixelValue)

writePixel(mysh,pixelLocation,color)

Description

writePixel(mysh,pixelLocation,pixelValue) writes the specified pixel color value at the specified pixel location on the LED Matrix.

Specify the pixel location as 1x2 [column row] value. Specify the color as a 1x3 [R G B] value.

writePixel(mysh,pixelLocation,color) writes the specified color at the specified location on the LED Matrix.

Specify the pixel location as 1x2 [column row] value. Specify the color by name.

You can specify the following colors by name:

• ‘red’ or ‘r’

• ‘blue’ or ‘b’

• ‘green’ or ‘g’

• ‘cyan’ or ‘c’

• ‘magenta’ or ‘m’

• ‘yellow’ or ‘y’

• ‘white’ or ‘w’

• ‘black’ or ‘k’

Examples

Write Pixel Value at the Pixel Location on LED Matrix

To write to an individual LED Matrix pixel at the specified column and row position with the specified color.

writePixel(mysh,[1 1],[255 0 0]) 

Write the pixel color specified by the value [255, 0, 0] (red) to the pixel at location, [1,1].

Write Specified Color at a Pixel Location on LED Matrix

Writes the specified color at the specified location on the LED Matrix.

writePixel(mysh,[1 1],'r') 

Write the pixel color specified by the name ‘r’ (red) to the pixel at location, [1,1].

Input Arguments

mysh — Connection to SenseHAT

Sense HAT object

Connection to a SenseHAT board, specified as a sensehat object.

Example: mysensehat

pixelLocation — LED Matrix location at which the specified color should be written

[column row]

The column–row value at which the specified color should be written. Pixel location specified as [1 2] refers to the pixel in the first column and the second row. The column and row values can range from 1 to 8.

The following image shows the pixel locations:

Example: [1 2]

pixelValue — The pixel value that should be written at the specified location

[R G B] in the range 0–255.

Pixel value that should written at the specified location.

Example: [255, 0, 255]

color — The color that should be written at the specified location

'r' or 'red' | 'g' or 'green' | 'b' or 'blue' | 'y' or 'yellow' | 'c' or 'cyan' | 'm' or 'magenta' | 'w' or 'white' | 'k' or 'black'

The color that should written at the specified location.

Example: ‘m’

Extended Capabilities

C/C++ Code Generation

Generate C and C++ code using MATLAB® Coder™.

• You can also deploy writePixel on the Raspberry Pi^® hardware in MATLAB^® Online™.

Version History

Introduced in R2016b