After

Before

val results = months.flatMap {
          month => {
            val raster = RasterSource(store, s"${month}${year}NDVI_TOA_UTM14")
            val mask = RasterSource(store, s"${month}${year}ACCA_State_UTM14")
            val masked = raster.localMask(mask, 1, NODATA)
            
            valid.map {
              g =>
                val polygon = Polygon(g.geom, 0)
                val coords = Demo.server.get(GetCentroid(polygon)).geom.getCoordinate
                masked.zonalMean(polygon).run match {
                case Complete (result, _) => isNoData(result) match {
                  case true => (coords, month, None)
                  case false => (coords, month, Some(math.round(result)))
                }
                case _ => (coords, month, None)
                }
            }
          }
        }

gistfile1.txt

val results = months.flatMap {
          month => {
            val raster = RasterSource(store, s"${month}${year}NDVI_TOA_UTM14")
            val mask = RasterSource(store, s"${month}${year}ACCA_State_UTM14")
            val masked = raster.localMask(mask, 1, NODATA).run match {
              case Complete(result, _) => RasterSource(result)
            }
            valid.map {
              g =>
                val polygon = Polygon(g.geom, 0)
                val coords = Demo.server.get(GetCentroid(polygon)).geom.getCoordinate
                masked.zonalMean(polygon).run match {
                case Complete (result, _) => isNoData(result) match {
                  case true => (coords, month, None)
                  case false => (coords, month, Some(math.round(result)))
                }
                case _ => (coords, month, None)
                }
            }
          }
        }

gistfile1.txt should be 'After'