藉由數學模型與電腦科技的輔助以達成規劃作業的自動化一直是規劃者追求的目標。然而，目前已發展的土地使用數學模型，雖可以應用於各種土地使用規劃問題的分析、預測、及模擬等作業，但對於以方案研擬為主的規劃作業需求則幫助有限。特別是關於土地使用區位選擇問題方面，仍舊缺乏可供實務規劃應用的數學模型。為此，本研究提出一套「方格組合模式」，在理性規劃模式的基礎下，透過將規劃空間劃分成規則方格的方式，藉由導入「土地使用轉用」的觀念來建立「土地使用轉用優先順序表」，並據此將土地使用區位決策過程，轉換成明確且有限的程序與數學式所構成的方格組合問題，達到模擬土地使用計畫替選方案的目的。經由假設簡例測試結果顯示，此一方法可以結合電腦科技的輔助達成自動化產生土地使用計畫替選方案。

The wish of automated planning through the assistance of mathematical models and computer technologies is the ultimate goal for all planners. However, contemporary mathematical modeling approaches to land use planning may provide useful assistance in analytical, forecasting, and simulating purposes. Still, it lacks capabilities on alternatives designing, especially on the needs of practical location allocating problems. This paper proposes an approach, namely "grids-assembled", which is based on the rational planning approach, to simulate the process of alternatives designing to land use planning. By partitioning the planning area into a network of regular grids and with the concept conducted from "land use transferred", alternatives designing of land use planning can be transformed into grid-space assembled process with clear and finite procedures and mathematical equations. The test result shows that the proposed approach does achieve the automated goal of integrated computer technologies to assist alternatives generating for land use planning.