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#include <cmath>
#include <QGuiApplication>
#include <QtQuick/QQuickView>
#include "mp.h"
#include "scatterplot.h"
arma::uvec getSample(arma::uword n)
{
return arma::randi<arma::uvec>((arma::uword) 3*sqrt(n), arma::distr_param(0, n-1));
}
arma::mat getProjection(const arma::mat &X)
{
arma::uword n = X.n_rows;
arma::uvec sampleIndices = getSample(n);
arma::mat Ys = arma::randn(sampleIndices.n_elem, 2);
Ys = mp::forceScheme(mp::dist(X.rows(sampleIndices)), Ys);
return mp::lamp(X, sampleIndices, Ys);
}
int main(int argc, char **argv)
{
QGuiApplication app(argc, argv);
qmlRegisterType<Scatterplot>("PM", 1, 0, "Scatterplot");
QQuickView view;
QSurfaceFormat format = view.format();
format.setSamples(16);
view.setFormat(format);
view.setResizeMode(QQuickView::SizeRootObjectToView);
view.setSource(QUrl("qrc:///main_view.qml"));
if (argc > 1) {
arma::mat X;
X.load(argv[1], arma::raw_ascii);
Scatterplot *plot = view.rootObject()->findChild<Scatterplot *>("plot");
arma::mat scatterData(X.n_rows, 3);
scatterData.cols(0, 1) = getProjection(X.cols(0, X.n_cols - 2));
scatterData.col(2) = X.col(X.n_cols - 1);
plot->setData(scatterData);
}
view.show();
return app.exec();
}
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