Latest Contributions by robertkalasek

i am about to generate a near table. the input is a metric CRS and the output distance unit is set to meters, the method is set to "Geodesic" - in order to get non-projected distances. the origins are about 6.7 mio points all over Europe, near features are about 30 mio polygons. everything is spatially indext - of course. and a search radius is set to a pretty low value of 1500m ... everything works fine, so far on sub-samples. but the performance is deeply disappointing with the 6.7mio points and definitely not up to any reasonable standard. especially when considering that the machine is a i9-13900K, 24 core, 128 GB RAM device. according to the windows ressourcemonitor.app exactly 3 % of the cpu performance are used to do my calculations. ... three percent ! are there any ideas for workarounds, multithread settings or anything like this to incerase performance ? best robert ... View more

i have a pretty complex street network from a whole European country. the data is detailed concerning geometrical accuracy as well as categorial diversity. it spans street categories from hiking trails to motorways. and according to the hierarchical organizational structure, different approaches to coding categories are found in different parts of my data. what i want is to do multimodal routing on top of a single network and identify those edges that can be used by a specific traffic mode via restriction-settings on the network side and search criteria/snap settings on the Stops-side. my problem is, that there are misassignments of street categories that result in isolated subnets. i.e. for instance a certain area where cars are allowed to drive which is connected to the rest of the network via edges that are reserved for pedestrians. running the routing results in locations that are allocated to that part of the network and returns an error since the routing can't reach the destination whenever it is located outside of the isolated subnet part. these and similar situations do occur in serious magnitudes within a dataset of 2 mio edges. up to now, i didn't find a tool that can do a topological analysis and identify every disconnected part of my network. i have been reading some information about utility-networks (where that kind of "find disconnected" tool exists) but an approach where I have to set up a fake utility-network out of my street data seems to be too complex to me.  any ideas ? thx in advance ... View more

i am working on a intel core i9-13900k machine with 24 cores, 128gb ram and one of the fastests nvme ssds currently existing. and i am about to do some experiments with a test region of about 4000 x 4500 cells 10x10m each.  the expected reuslult set to "Whole year", all the other settings are left default exept for the "Diffusse proportion" - changed from 0.3 to 0.32 and "Transmittivity" from 0.5 to 0.48. that calculation takes quite a long time and the most annoying thing is, that the taskmanager shows just one single core doing at least something - at an overall cpu workload of 7 - 9% and a rate of about 1,5 to 5.2 GHz.  but on top of that astonishingly poor performance one older machine with lower performance specs in any dimension is outperforming the modern machine by about 30% (!).     ... View more