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UIMAGE - UIMAGESC 1.0
File ID: 85333






UIMAGE - UIMAGESC 1.0
Download UIMAGE - UIMAGESC 1.0http://www.mathworks.com/Report Error Link
License: Shareware
File Size: 10.0 KB
Downloads: 2
Submit Rating:
UIMAGE - UIMAGESC 1.0 Description
Description: Display image with non-linearly spaced axis.
UIMAGE(X,Y,C) displays matrix C as an image, using the vectors X and Y to specify the X and Y coordinates. X and Y may be unevenly spaced vectors, but must be increasing. The size of C must be LENGTH(Y)*LENGTH(X). (Most probably you'll want to display C' instead of C).

Contrary to Matlab's original IMAGE function, here the vectors X and Y do not need to be linearly spaced. Whereas Matlab's IMAGE function linearly interpolates the X-axis between X(1) and X(end), ignoring all other values (idem for Y), here UIMAGE allows for X and/or Y to be unevenly spaced vectors, by locally stretching the matrix C (ie, by duplicating some elements of C) for larger X and/or Y intervals.

Use UIMAGESC to scale the data using the full colormap. The syntax for UIMAGESC(X,Y,C,...) is the same as IMAGESC(X,Y,C,...).

Typical uses:
- Plotting a spatio-temporal diagram (T,X), with unevenly spaced time intervals for T (eg, when some values are missing, or when using a non-constant sampling rate).
- Plotting a set of power spectra with frequency in log-scale.

Example:
c = randn(50,20); % Random 50x20 matrix
x = logspace(1,3,50); % log-spaced X-axis, between 10 and 1000
y = linspace(3,8,20); % lin-spaced Y-axis, between 3 and 8
uimagesc(x,y,c'); % displays the matrix

License: Shareware

Related: imagescxyc, uimagescxyc, Syntax, typical, Plotting, Diagram, spatiotemporal, colormap, Scale, duplicating

O/S:BSD, Linux, Solaris, Mac OS X

File Size: 10.0 KB

Downloads: 2



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