Dear Maintainer, After installing the libharu (libhpdf-2.3.0 and libhpdf-dev, version 2.3.0+dfsg-1~exp3 <https://packages.debian.org/source/experimental/libharu> ) package from experimental, downloading the Witty source package and building and installing it(apt-get source witty, debuild -b -uc -us, dpkg --install the produced debs) the charts function works as advertised when running the example in /usr/lib/Wt/examples/charts.
Hope this information helps, Thanks, Kasper Loopstra
