<< image

Graphics functions

imread >>

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imagesc

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Display image from array with scaled colors.

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Syntax

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imagesc()

imagesc(C)

image(X, Y, C)

imagesc('CData', C)

imagesc('XData', X, 'YData', Y,'CData', C)

imagesc(..., propertyName, propertyValue)

imagesc(parent, ...)

go = imagesc(...)

Input argument

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X

x-coordinates: vector or matrix.

Y

y-coordinates: vector or matrix.

C

Color array: m-by-n-by-3 array of RGB triplets.

parent

a scalar graphics object value: parent container, specified as a axes.

propertyName

a scalar string or row vector character.

propertyValue

a value.

Output argument

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go

a graphics object: image type.

Description

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imagessc displays C data as an image. This image is colormapped using the colormap for the current figure.

Properties:

AlphaData Transparency data: scalar, array the same size as CData, or 1 (default).

AlphaDataMapping

CData Image color data: vector or matrix, 3-D array of RGB triplets.

CDataMapping Color data mapping method: 'direct' or 'scaled' (default).

Children [].

Parent Parent: axes object.

Tag Object identifier: string scalar, character vector, '' (default).

Type Type of graphics object: 'surface'.

UserData: User data: array or [] (default).

Visible State of visibility: 'off' or 'on' (default).

XData Placement along x-axis: two-element vector, scalar, [1 size(CData, 1)] (default).

YData Placement along y-axis: two-element vector, scalar, [1 size(CData, 2)] (default).

Examples

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f1 = figure();
C = [0 2 4 6; 8 10 12 14; 16 18 20 22];
imagesc(C)

f2 = figure();
C = [0 2 4 6; 8 10 12 14; 16 18 20 22];
imagesc(C)
colormap(gray)

See also

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image, colormap.

History

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Version	Description
1.0.0	initial version

Author

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Allan CORNET