Comments (3)
On observing the length of the Priority queue for around 100K polygons, I found that its max value for a polygon was less than 1000 for almost all the polygons, except the ones which were having memory issues.
For polygons that were having issues, the maximum length of the Priority queue went up to 1,5000,000 and higher, thus causing memory issues.
from geo.
Sample Code snippet for the idea(not working):
"""
cellUnion := s2.CellUnion{}
cu, err := getCellUnionForPolygon(polygon, minCellLevel, maxCellLevel, maxNumCells)
if !err.IsNil() {
fmt.Println("err: ", err)
}
cellUnion = s2.CellUnionFromUnion(cellUnion, cu)
// divide all merged cells to minCellLevel
cellUnion.Denormalize(minCellLevel, 0)
// convert []cellID to []unit64
cellIDs := make([]uint64, 0)
for _, cellID := range cellUnion {
cellIDs = append(cellIDs, uint64(cellID))
}
fmt.Println("cell_ids", cellIDs)
func getCellUnionForPolygon(polygon [][][]float64, minCellLevel int, maxCellLevel int, maxNumCells int) (s2.CellUnion) {
if minCellLevel > maxCellLevel {
temp := maxCellLevel
maxCellLevel = minCellLevel
minCellLevel = temp
}
region, err := getS2RegionForPolygon(polygon)
if !err.IsNil() {
return nil
}
rc := &s2.RegionCoverer{MaxLevel: maxCellLevel, MinLevel: minCellLevel, MaxCells: maxNumCells}
cellUnion := rc.Covering(region)
return cellUnion
}
"""
from geo.
Found same problem
from geo.
Related Issues (20)
- Calculate S2 of polygon with OOM Error in golang
- AllNeighbors has a bug
- Is this project out of maintenance?
- Invalid input loops to PolygonFromOrientedLoops HOT 2
- Having trouble with RegionCoverer
- Loop.Area() unit HOT 1
- Find Closest Edge Performance with Many Polylines
- Porting bug
- Bug on Polygon Contains (linked to https://github.com/golang/geo/issues/77 ?) HOT 1
- Polygon.Intersects() method not working for some inputs? HOT 1
- golang-s2 momory leak HOT 1
- Q: How do you calculate the distance in km between 2 lat/lng points? HOT 7
- ppc64le - TestPredicatesRobustSignEqualities failure due to floating point precision differences HOT 1
- ppc64le - TestPointMeasuresPointArea failure due to floating point precision differences
- ppc64le - TestClosestEdgeQueryTrueDistanceLessThanChordAngleDistance failure due to floating point precision differences HOT 1
- Inverted params HOT 1
- Get a random point from a shape HOT 2
- Subdivide polygon
- Memory Leak when a loop contains point multiple time HOT 2
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from geo.