PURPOSE: To save the laber of users at the time of searching an optimal dividing state by displaying dividing information after overlapping a shape indicating a continuum and a pseudo mesh based on graphic data stored in a storage means and graphic data prepared by a calculating means.

CONSTITUTION: When a model is a two-dimensional graphic, a prediction processing part 211 searches the area S of the model based on the graphic data, first of all. Then, the area S of the model is divided by a dividing number (n), this divided result is defined as the area Sd of each element after division, and the pseudo mesh is prepared so that the area of each square can be equal to the area Sd of each element. Also, the graphic data indicating each line segment which constitutes the pseudo mesh prepared like this, are inputted to a display device 230 with the graphic data indicating the model, and the graphic indicating the model and the pseudo mesh are displayed based on these graphic data.