gnuplot easy histogram Post: 302488661

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Top Forums UNIX for Dummies Questions & Answers gnuplot easy histogram Post 302488661 by enes71 on Tuesday 18th of January 2011 05:08:39 PM

01-18-2011

Registered User

It is perfect actually. Thank you very much for helping.

---------- Post updated at 08:21 AM ---------- Previous update was at 05:36 AM ----------

Hello again,

I have one thing more also I am struggling a lot to plot it. My actual data is as follows;

1724836 7450227 -64
1724830 7450229 -86
1724825 7450231 -87
1724821 7450233 -88
1724817 7450235 -88
1724812 7450237 -84
1724780 7450163 -79
1724787 7450165 -64
1724794 7450168 -73
1724802 7450171 -76
...
going like this....

I am treating the data as an X,Y coordinate and first value is X and the second Y. I have a static point like (1724850,7450200). What I want is to draw a line between each X,Y and my static point. Also while drawing the line I want to make some specification; if the third field value is bigger than -70, I want to draw it green. If it is between -70 and -85, yellow and if it is smaller than -85, red.

I tried to use arrow command of gnuplot but I could not succedd. I am trying hard to plot this data in this way.

Any help is much appreciated again, thank you.

---------- Post updated at 09:30 AM ---------- Previous update was at 08:21 AM ----------

Here is my code but it gives nothing, only a blank page;

Code:

#!/usr/local/bin/gnuplot -persist
set terminal png large size 1920,1200
set output '003A98B70A10_coverage.png'
set grid
set origin 1724850,7450200
set xrange [1724000:1724400]
set isosample 150
set palette defined (-100 "red", -95 "yellow", -85 "green")
plot "003A98B70A10.log" with impulses
# EOF

It should give multiple lines drawn from the origin point to the multiple other points.

---------- Post updated at 05:08 PM ---------- Previous update was at 09:30 AM ----------

I also tried to use 'set arrow' command but properties for that command does not seem to take data from file....

enes71

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mpsimagehistograminfo

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)