Questions tagged [optimization]
Use this tag when referring to improving or optimizing a process such as a script, application or software.
167 questions
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kartoza/mapproxy performance issues
So I've been looking into containerization of a deployed normal MapProxy. Where I decided to use kartoza/mapproxy instead of the official docker image. However it seems like I am not getting anywhere ...
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ArcGIS Pro: Independently create optimized paths with fixed-width corridors from all sources to all destinations
I'm looking for a solution to create optimized fixed-width corridors as line features restricted by a barrier raster.
The corridors should be independent from each other, meaning intersections are ...
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Missing Outputs with ArcPy RasterToASCII and ThreadPoolExecutor
When I use ThreadPoolExecutor, I am missing a random number of expected outputs. I tried making an MRE to show what I am trying to do. The first MRE works but when I run a second MRE (which is closer ...
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Error in optim: function cannot be evaluated at initial parameters
When trying to use optim I got this error : Error in optim: function cannot be evaluated at initial parameters
This is the function I use in optim :
stack_v = list(chlor_a = values(resample), layer = ...
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Nothing to summarize if you provide a single RasterLayer; see cellStats
I'm trying to optimize 5 coefficients from 2 rasters. To do so I tried to use the optim function doing this :
CHLOA = raster(("C:/Users/aurel/Downloads/2013-10-26 (2).tif"), band = 1)
B1 = ...
4
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Algorithm for recursive network optimization
I have a connected network consisting of lines (edges) and points (nodes). I must connect a subset of these nodes together along the shortest path.
A zoomed-in image of my network is below. The red ...
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What does "tiles" usually mean in a GIS context?
I've seen the word thrown around a lot and from the way I've heard it used, there is an approach to dividing the world up into squares with various zoom levels as an effort to speed up web rendering. ...
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Determining adjacency across elements in a GeoPandas GeoDataFrame
Main question
What is an efficient (i.e., good balance of memory & processing time) way to compute adjacency using a GeoPandas GeoDataFrame?
For my the rest of my question, I'll focus on the case ...
- 2,859
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Calculating 2 or 4 new marginal bounding boxes from 2 overlapping bounding boxes in Leaflet?
The Scenario
I have a web map that calls for data whenever the map moves. It sends the bounds of the map and returns data within those bounds. Our data source just got way bigger, so I am trying to ...
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Performance of PostGIS Query
Here's my query
SELECT "building"."id",
"building"."details",
"building"."status",
ST_AsGeoJSON("building"."center")::...
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Levenberg–Marquardt algorithm in Google Earth Engine for parameter optimization
I have managed to successfully run the model below in Google earth engine, however the parameters α and β are unknown coefficients that need to be determined through optimization based on the ...
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Why r.walk calculates different cumulative cost depending on calculation direction
I have two points A and B. If I calculate cumulative costs from A to B respectively from B to A I expect the same cumulative costs at the arrival points. Take into account that the walk_coeff are set ...
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Getting osm_id from random point with OpenStreetMap database
I've downloaded the OpenStreetMap data from GeoFabrik and imported it into PostgreSQL as described in the first procedures on this page.
The import was successful. After that, I found a way of ...
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What is the standard approach to store dates as pixel values in raster? [closed]
I have a raster, where the value of a pixel should represent the date at which that pixel was deforested. Dates ranging from 2015 until today. I need resolution to be at the level of day.
I would like ...
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Optimizing code to run faster in Google Earth Engine
I am trying to query properties (~10) from Earth Engine datasets (Temperature, Precipitation, GLDAS outputs, etc.) for a given coordinate point and time range in my dataset (90,000 points). I’ve done ...
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