Experimental Physics and
Industrial Control System

Danke found it my self ;-)

  void put(long long val, shared_vector<const double> const & xData, shared_vector<const double> const & yData)


 shared_vector<double> valx(minSize);
        for (unsigned int i = 0; i < minSize; i++){
          valx[i] = (vCh[1][i] - vCh[0][i]);
        }

shared_vector<double> valy(minSize);
        for (unsigned int i = 0; i < minSize; i++) {
          valy[i] = (vCh[2][i] - vCh[3][i]);
        }

  ClPut->put(counter, freeze(valx), freeze(valy));


> On 16. Apr 2019, at 14:36, Heinz Junkes via Tech-talk <[email protected]> wrote:
> 
> I don't think I understand the shared vectors thing yet
> and I can't get any further here.
> 
> I defined 
> 
> epics::pvData::shared_vector<double> xData, yData;
> 
> Populate vector like
> 
> xData.push_back(vCh[1][i] - vCh[0][i]);
> yData.push_back(vCh[2][i] - vCh[3][i]); 
> 
> Then call
> 
> ClPut->put(counter, xData, yData);
> 
> 
> Is defined 
> 
> void put(long long val, shared_vector<double> xData, shared_vector<double> yData)
>    {
> …
> 
> Here I am doing
> 
> PVDoubleArrayPtr pvDoubleArray = static_pointer_cast<PVDoubleArray>(pvField); 
> 
> pvDoubleArray->replace(freeze(xData));
> 
> But this leads to :
> 
> 		Can't freeze non-unique vector
> 
> When I use 
> 
> pvDoubleArray->swap(freeze(xData));
> 
> This leads to compile error:
> ../iChunk.h: In member function 'void ClientPut::put(long long int, epics::pvData::shared_vector<double>, epics::pvData::shared_vector<double>)':
> ../iChunk.h:188:53: error: cannot bind non-const lvalue reference of type 'epics::pvData::PVValueArray<double>::const_svector& {aka epics::pvData::shared_vector<const double>&}' to an rvalue of type 'epics::pvData::shared_vector<const double>'
>              pvDoubleArray->swap(freeze(xData));
> 
> Danke,
> Heinz

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Epics 4 pvd::shared-vector , Can't freeze non-unique vector Heinz Junkes via Tech-talk

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