manet vizualizer

The following example is given with the Crowdad roma/taxi dataset available here. The traces are of the following format:

DRIVER_ID;TIMESTAMP;POSITION

The regular expression associated with it is:

(\d+);(\d{4}\-\d{2}\-\d{2}\s\d{2}\:\d{2}\:\d{2})[^;]+;POINT\(([^\s;]+)\s([^\s;]+)\)

The time format is:

yyyy-MM-dd HH:mm:ss

The input projection of the coordinates in the dataset is WGS84 (EPSG 4326):

+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs

Since we want to work with distances and spatial operations, we use a projected coordinate system that fits with the coordinate extent of the dataset, namely UTM zone 33N (EPSG 3065):

+proj=utm +zone=33 +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs

Note. You can use this website to transform WGS 84 lat/lon coordinates into UTM x/y coordinates. The website also gives the UTM zone associated with the lat/lon coordinates.

To add a new plugin under QT: Right click on Plugin directory > Add new Subproject > Library > C++ Library > Fill the name > Requires QtWidgets,QtGui,QtCore > Create the files you need to implement the decorator Add in the *.pro file:

QT       += widgets concurrent
...
INCLUDEPATH    += ../../manetviz
DESTDIR         = ../../manetviz/plugins

In the <plugin_name>.h file, add:

#include <QObject>
#include "iplugin.h"

Make the plugin inherit from the interface (eg. IPlugin):

class <plugin_name>: public QObject, public IPlugin
{
  Q_OBJECT
  Q_PLUGIN_METADATA(IID "org.manet-viz.IPlugin" FILE "<plugin_name>.json")
  Q_INTERFACES(IPlugin)

public:
  <plugin_name>(); // constructor
  // implement the abstract method
  // inherited from IPlugin
  QObject * getQObject() { return this; }
};

Create a new file in the plugin directory of the name: <plugin_name>.json that includes:

{
"name" : "<plugin_name>",
"version" : "0.0.1",
"dependencies" : [],
"active" : "true"
}

On the plugin folder, right click > Add new > Qt > Qt Designer Form > Widget > Name control.ui > Finish

Add the elements you want into the designer view. Do not forget to set a minimum width/height for the QWidget to see it.

In the <plugin_name>.h, add the following:

namespace Ui {
    class Control;
}

Add a private variable ui:

Ui::Control *ui;

In the <plugin_name>.cpp, add the following:

#include "ui_control.h"

Set the UI attribute for the plugin in the constructor in the cpp file:

<plugin_name>::<plugin_name>():
  ui(new Ui::Control) { ... }

Implement the QWidget * createControlWidget() const method:

QWidget * control = new QWidget();
ui->setupUi(control);
... // init the widgets and connections
return control;

Clean all and run qmake