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Top Forums UNIX for Dummies Questions & Answers How to sum rows in e.g. column 1 by a category in e.g. column 2 Post 302415609 by ForestRun on Friday 23rd of April 2010 03:10:35 AM
Old 04-23-2010
I have no problem getting the output based on Scrutinizer suggestion:

awk -F, '{A[$3","$4]+=$2} END{for (i in A) print A[i]","i}' input
22,beta,5
16,gamma,3
11,alpha,4
 

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MPSCNNNormalizationGammaAndBetaState(3) 		 MetalPerformanceShaders.framework		   MPSCNNNormalizationGammaAndBetaState(3)

NAME
MPSCNNNormalizationGammaAndBetaState SYNOPSIS
#import <MPSCNNNormalizationWeights.h> Inherits MPSState. Instance Methods (nonnull instancetype) - initWithGamma:beta: Class Methods (nonnull instancetype) + temporaryStateWithCommandBuffer:numberOfFeatureChannels: Properties __nonnull id< MTLBuffer > gamma __nonnull id< MTLBuffer > beta Method Documentation - (nonnull instancetype) initWithGamma: (__nonnull id< MTLBuffer >) gamma(__nonnull id< MTLBuffer >) beta Initialize a MPSCNNNormalizationGammaAndBetaState object using values contained in MTLBuffers. Parameters: gamma The MTLBuffer containing gamma terms. beta The MTLBuffer containing beta terms. + (nonnull instancetype) temporaryStateWithCommandBuffer: (__nonnull id< MTLCommandBuffer >) commandBuffer(NSUInteger) numberOfFeatureChannels Create a temporary MPSCNNNormalizationGammaAndBetaState suitable for a normalization operation on images containing no more than the specified number of feature channels. Parameters: commandBuffer The command buffer on which the temporary state will be used. numberOfFeatureChannels The number of feature channels used to size the state. Property Documentation - beta [read], [nonatomic], [assign] A MTLBuffer containing the beta terms. - gamma [read], [nonatomic], [assign] A MTLBuffer containing the gamma terms. Author Generated automatically by Doxygen for MetalPerformanceShaders.framework from the source code. Version MetalPerformanceShaders-100 Thu Feb 8 2018 MPSCNNNormalizationGammaAndBetaState(3)
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