https://community.intel.com/t5/Intel-Integrated-Performance/HistogramEven-parameters/m-p/966604#M20221 <P>Hi Isaac,</P> <P>you should define srcROI as srcROI.height = 1, srcROI.width = your vector length, srcStep = sizeof(float)*(your vector length)</P> <P>regards, Igor</P> Wed, 29 Jan 2014 11:15:08 GMT Igor_A_Intel 2014-01-29T11:15:08Z https://community.intel.com/t5/Intel-Integrated-Performance/HistogramEven-parameters/m-p/966603#M20220 <P>Hi,</P> <P>I'm on the need of using the ippiHistogramRange_32f_C1R fuction, but I don't know how to get two parameters: srcStep and roiSize.I don't know what to put in there. My source is just a 32f vector of 257 elements. The array of values is a 32f vector of 100 elements and the number of levels is 100. I just want to get the final distribution.&nbsp;</P> <P>Thanks for your time,</P> <P>Regards.</P> Fri, 24 Jan 2014 14:47:23 GMT https://community.intel.com/t5/Intel-Integrated-Performance/HistogramEven-parameters/m-p/966603#M20220 Isaac_D_ 2014-01-24T14:47:23Z https://community.intel.com/t5/Intel-Integrated-Performance/HistogramEven-parameters/m-p/966604#M20221 <P>Hi Isaac,</P> <P>you should define srcROI as srcROI.height = 1, srcROI.width = your vector length, srcStep = sizeof(float)*(your vector length)</P> <P>regards, Igor</P> Wed, 29 Jan 2014 11:15:08 GMT https://community.intel.com/t5/Intel-Integrated-Performance/HistogramEven-parameters/m-p/966604#M20221 Igor_A_Intel 2014-01-29T11:15:08Z