(self, xm, ym)
| 340 | return round(xi * self.x_grid2mask), round(yi * self.y_grid2mask) |
| 341 | |
| 342 | def mask2grid(self, xm, ym): |
| 343 | return xm * self.x_mask2grid, ym * self.y_mask2grid |
| 344 | |
| 345 | def data2grid(self, xd, yd): |
| 346 | return xd * self.x_data2grid, yd * self.y_data2grid |