ABSTRACT Since the Middle Ages advances in manufacture and chemical processes have improved standards of window glass production. This can be identified through decreasing levels of visible imperfections in window glass made ostensibly, prior to the 1950s. The importance of retaining historic window glass cannot be understated with the inherently imbued cultural, aesthetic and historical value. Windows are the element of historic buildings most at risk from replacement by newer equivalents. In order to quantify the extent to which historic windows are replaced, we rely on data published by local authorities. However, this data can be difficult to access and analyse due to the disparate and complex nature of local authority websites. Here we introduce a bespoke computer programme, written and developed specifically to extract planning data with its disparate and multifaceted parameters. The programme enables trends in window replacement over time to be discerned. Within local authorities, both general planning and listed building applications related to windows have a high approval rate. Listing appears not to offer significant protection for windows. Despite the promotional efforts of national and international heritage organisations in favour of repairing and upgrading existing windows, in practice, these appear to have little effect at local level.

中文翻译：

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历史建筑中窗户玻璃的更换率：苏格兰规划部门列出的建筑许可数据的定制计算分析方法

摘要自中世纪以来，制造和化学工艺的进步提高了窗户玻璃的生产标准。这可以通过降低1950年代以前表面上制成的窗户玻璃中可见缺陷的程度来确定。保留历史悠久的玻璃窗的重要性不可低估，因为它具有固有的文化，美学和历史价值。窗户是历史建筑的要素，因其被更新的同等建筑所替代，其风险最大。为了量化替换历史窗口的程度，我们依赖于地方当局发布的数据。但是，由于地方当局网站的不同性和复杂性，可能难以访问和分析这些数据。这里我们介绍一个定制的计算机程序，专门编写和开发以提取具有不同参数和多方面参数的计划数据。该程序可以识别随时间变化的窗户更换趋势。在地方政府内部，与窗户相关的总体规划和已列出的建筑应用都具有很高的批准率。列表似乎没有为Windows提供明显的保护。尽管国家和国际遗产组织在维修和升级现有窗户方面做出了促进性的努力，但实际上，这些措施在地方一级似乎收效甚微。列表似乎没有为Windows提供明显的保护。尽管国家和国际遗产组织在维修和升级现有窗户方面做出了促进性的努力，但实际上，这些措施在地方一级似乎收效甚微。列表似乎没有为Windows提供明显的保护。尽管国家和国际遗产组织在维修和升级现有窗户方面做出了促进性的努力，但实际上，这些措施在地方一级似乎收效甚微。