У вашего броузера проблема в совместимости с HTML5
You can use Scilab not only to calculate quantites, but to plot them as well. In this video we'll do only simple x-y plots.
Producing plots and graphics is a very common task for analysing data and creating reports. Scilab offers many ways to create and customize various types of plots and charts. In this section, we present how to create 2D plots and contour plots. Then we customize the title and the legend of our graphics. We finally export the plots so that we can use it in a report.
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Other resources on SciLab from WeMakeItEasy
Introduction to basic SciLab operators: https://www.youtube.com/watch?v=H_aD_ZBUTW0