[pdal] C++ api questions

[David Serret Mayer]

I have two questions ,I am trying to use PDAL with the c++ API.


First, Is there a way to "parse" json directly into a stagefactory. That
would be great!


Second, how do I collect the output from the filter in this program


#include <pdal/PointView.hpp>
#include <pdal/PointTable.hpp>
#include <pdal/Dimension.hpp>
#include <pdal/Options.hpp>
#include <pdal/StageFactory.hpp>
#include <pdal/Filter.hpp>
#include <pdal/filters/ChipperFilter.hpp>
#include <pdal/filters/RandomizeFilter.hpp>
#include <pdal/filters/ApproximateCoplanarFilter.hpp>


#include <io/BufferReader.hpp>

#include <vector>

void fillView(pdal::PointViewPtr view)
{
    struct Point
    {
        double x;
        double y;
        double z;
    };

    for (int i = 0; i < 1000; ++i)
    {
        Point p;

        p.x = -93.0 + i*1;
        p.y = 42.0 + i*0.1;
        p.z = 106.0 + i;

        view->setField(pdal::Dimension::Id::X, i, p.x);
        view->setField(pdal::Dimension::Id::Y, i, p.y);
        view->setField(pdal::Dimension::Id::Z, i, p.z);
    }
}


int main(int argc, char* argv[])
{
    using namespace pdal;


    PointTable table;
    table.layout()->registerDim(Dimension::Id::X);
    table.layout()->registerDim(Dimension::Id::Y);
    table.layout()->registerDim(Dimension::Id::Z);

    PointViewPtr view(new PointView(table));

    fillView(view);

    ChipperFilter appr;
    Options options;

    options.add("knn",8);
    options.add("thresh1",25);
    options.add("thresh2",6);

    StageFactory factory;


    Stage *filter =  new( ApproximateCoplanarFilter );

    filter->setInput(appr);
    filter->setOptions(options);
    filter->prepare(table);
    filter->execute(table);

    PointViewPtr view2(new PointView(table));
    fillView(view2);

    std::cout << view2->size() << std::endl; // still 1000...
}



Thank you very much!

-- 
*David Serret *- R&D Engineer at Eigen Dynamics SL
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/pdal/attachments/20180828/b384f0e9/attachment.html>