Calculator for statistic, function plottting, vectors, matrices, complex numbers, coordinates, intersections. For objects like point, line, plane and sphere distances, intersections, volume, area of squeres, area of a triangle can be calculated.

The program is based on the model-free method of time series analysis Caterpillar-SSA (Singular Spectrum Analysis). It allows identification, analysis and forecast of the time series structure. The program can be applied to multivariate analysis.

While you draw, Tess will maintain the symmetry group you have chosen- 24 rosette (circular), all 7 frieze (strip), and all 17 wallpaper groups are included. Illustrations may be printed from Tess or exported to GIF,JIF,PCX,DXF,SVG,and other formats.