How to install

[catalinalb]

Please include installation instructions for beginners.

after cd into the qwtplot3d folder what's next?

sudo qmake qwtplot3d.pro

and then...?

[jendralhxr]

I am using Qt 5.13.1 on Ubuntu 18.04. I use Qt library from the http://download.qt.io/official_releases/qt/5.13/5.13.1/
(the one from ubuntu's repository gave me compilation errors for no real reason)

To build qwtplot3d library:
$ qmake
$ make -j4
$ sudo make install