This paper aim to create method observe elevation of points, tower and structure that can’t be reach (or don’t need reach), this depend on concept space intersection where intersect two known direction vectors start from location points or can located simple computation. discuss too accuracy improvement for observed by above method.

When consumers only see prices once they visit stores, and some have time to comparison shop, co-location commits stores compete lower prices, which draws away from isolated stores. Profits of co-located firms are a single-peaked function the number shoppers—co-located thrive when there shoppers, but not too many. know in advance whether effects enhanced: may draw enough shoppers drive expected...