# r.survey: a tool for calculating visibility of variable-size objects based on orientation

> Research article (International Journal of Geographical Information Systems, 2021) · cited 15× · AI/ML

**Wikidata**: [openalex:W3176398245](https://www.wikidata.org/wiki/openalex:W3176398245)  
**Source**: https://4ort.xyz/entity/r-survey-a-tool-for-calculating-visibility-of-variable-size-objects-based-on-orientation