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Full Discussion: More fun with awk
Top Forums Shell Programming and Scripting More fun with awk Post 302319572 by colemar on Monday 25th of May 2009 07:14:47 PM
Old 05-25-2009
More fun with awk

Code:
#!/usr/bin/ksh
ls -l $@ | awk '
/^-/ {
l = 5*log($5)
h = sprintf("%7d %-72s",$5,$8)
print "\x1B[7m" substr(h,1,l) "\x1B[27m" substr(h,l+1)
}
'

ls command with histogram of file sizes.
The histogram scale is logaritmic, to avoid very short bars for smaller files or very long bars for bigger files.

Screenshot:
More fun with awk-clipboard01png
 

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MPSImageHistogramInfo(3)				 MetalPerformanceShaders.framework				  MPSImageHistogramInfo(3)

NAME
MPSImageHistogramInfo - Specifies information to compute the histogram for channels of an image. SYNOPSIS
#include <MPSImageHistogram.h> Public Attributes NSUInteger numberOfHistogramEntries BOOL histogramForAlpha vector_float4 minPixelValue vector_float4 maxPixelValue Detailed Description Specifies information to compute the histogram for channels of an image. MPSImageHistogram.h MetalPerformanceShaders.framework Copyright: Copyright (c) 2015 Apple Inc. All rights reserved. MetalPerformanceShaders histogram filters Member Data Documentation BOOL MPSImageHistogramInfo::histogramForAlpha Specifies whether the histogram for the alpha channel should be computed or not. vector_float4 MPSImageHistogramInfo::maxPixelValue Specifies the maximum pixel value. Any pixel value greater than this will be clipped to this value (for the purposes of histogram calculation), and assigned to the last histogram entry. This maximum value is applied to each of the four channels separately. vector_float4 MPSImageHistogramInfo::minPixelValue Specifies the minimum pixel value. Any pixel value less than this will be clipped to this value (for the purposes of histogram calculation), and assigned to the first histogram entry. This minimum value is applied to each of the four channels separately. NSUInteger MPSImageHistogramInfo::numberOfHistogramEntries Specifies the number of histogram entries, or 'bins' for each channel. For example, if you want 256 histogram bins then numberOfHistogramEntries must be set to 256. The value stored in each histogram bin is a 32-bit unsigned integer. The size of the histogram buffer in which these bins will be stored should be >= numberOfHistogramEntries * sizeof(uint32_t) * number of channels in the image. numberOfHistogramEntries must be a power of 2 and is a minimum of 256 bins. Author Generated automatically by Doxygen for MetalPerformanceShaders.framework from the source code. Version MetalPerformanceShaders-100 Thu Feb 8 2018 MPSImageHistogramInfo(3)
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