Qtiplot

related to #100

docs.it4i/software/viz/qtiplot.md

+# QtiPlot
+
+A cross-platform scientific application for data analysis and visualisation.
+
+## Introduction
+
+[QtiPlot][1] is a cross-platform scientific application for data analysis and visualisation.
+QtiPlot can be used to present 2D and 3D data and has various data analysis functions like curve fitting.
+The program is also extensible to a considerable degree via muParser and Python scripting language,
+which allows adding the arbitrary user-defined functions with access to graphs, matrices and data tables.
+
+## Installed Versions
+
+For the current list of installed versions, use:
+
+```console
+$ ml av QtiPlot
+```
+
+## Running QtiPlot
+
+!!! important
+    You must first enable [VNC][a] or [X Window System][b] GUI environment.
+
+To run QtiPlot, use:
+
+```console
+$ ml QtiPlot; qtiplot
+```
+
+[1]: https://www.qtiplot.com/index.html
+
+[a]: ../../../general/accessing-the-clusters/graphical-user-interface/vnc/
+[b]: ../../../general/accessing-the-clusters/graphical-user-interface/x-window-system/