converting daqmx acquired data into double

[edwin11k]

Hi~  I am very new in this area,, and need help with visual C#

 I have a usb connected daqmx, which measures voltage type signals continuously.

I managed to view the signal in visual C#, using NI Daq window application template.

My current objective is to compute the mean of the signal in real time, and post it to a gauge.

So, I opened inside the code of signal template to update it., then I have trouble. 

what it says is,

                NationalInstruments.AnalogWaveform<double>[] acquiredData = daqTaskComponent1.Read();
                waveformGraph1.PlotWaveforms(acquiredData);

What I want to do is to compute average of acquired data, and post it to a gauge real time ( such as gauge1.value=meanValue)

Anyone knows how to convert acquiredData into double data format and make a mean of the data, so that I can set as gauge input?

It seems that statistics.mean library isn't included as default in the template, either..so I need help with how to make a average of data.

Anyway, a picture is included to explain the situation better ...Thanks.

Edwin

[Danceman]

I believe the following code will work well.

            double Average = (double)acquiredData.GetValue(0);
            int SamplesAcquired = 1;
            for (long i = 1; i < acquiredData.LongLength; i++)
            {
                SamplesAcquired++;
                Average = Average + ((double)acquiredData.GetValue(i)  - Average)/ SamplesAcquired) ;
            }