Hello! I am currently working on a test that involves calculating the area of a circumference with a radius of 0.001 degrees -created via buffer-, centered at latitude -4 and longitude -63. The test geometry is on geographical coordinates (EPSG:4326). To obtain precise measurements in "ha", I convert the data into two coordinate systems: UTM 20S (EPSG:31980) and WGS 84 (EPSG:3857).
To perform these calculations, I utilized GeoPandas and Apache Sedona, but I encountered a significant discrepancy in the results obtained from the two libraries. The area calculations conducted with GeoPandas yielded the following results: area_3857_gpd: 3.9019353 ha area_utm_gpd: 3.85412083 ha However, when I employed Apache Sedona to perform the same calculations, the results differed significantly: area_utm_sedona: 2.07367218 ha area_3857_sedona: 8.573814622 ha Additionally, I have cross-validated the results obtained with GeoPandas by performing the same area calculations using QGIS. The results obtained with GeoPandas match those obtained from QGIS. Hence, the issue seems to lie specifically with the Apache Sedona library. I would appreciate any insights or suggestions that could help me understand the cause of this discrepancy between GeoPandas and Apache Sedona. Are there any known differences or considerations when using these libraries for area calculations? Best regards, [cid:[email protected]] Lucas Corbanez [email protected]<mailto:[email protected]> Consulting Services - Analytics Tel: +55 (11) 2306-8165 www.iteris.com.br<https://www.iteris.com.br/> [cid:[email protected]] [cid:[email protected]] [cid:[email protected]] Essa mensagem de e-mail e todos os anexos aqui transmitidos são informações confidenciais destinadas apenas à visualização e uso do destinatário e estão protegidas nos termos da Lei 9.279/96 e demais disposições legais aplicáveis. Dessa maneira, é estritamente proibido compartilhar, distribuir ou disseminar qualquer parte dessa mensagem sem o consentimento do remetente. Se você recebeu esta comunicação por engano, por favor notifique o remetente imediatamente e exclua essa mensagem e todas as cópias e backups dela. Agradecemos sua cooperação.
