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visits member for 3 years, 8 months
seen May 18 at 14:43

Currently a GIS developer in the field of sustainability science.


May
14
comment ArcGIS dot density for small areas
Ultimately I guess you could solve this by converting 'dots' to a point data set with each dot on a polygon centroid (or better yet a population weighted one). Then use representations and disperse markers to prevent dot overlap. A very long workflow considering you would probably need to iterate a few times to determine the best dot value, so I didn't take this route, but there's probably some mileage in creating software to do just that, if somebody wants to!
May
14
comment ArcGIS dot density for small areas
Thank you for the answers ArcGIS help doesn't give :) I used a more aggregate geography and I'm convinced the picture is more accurate as a result.
May
14
accepted ArcGIS dot density for small areas
May
13
asked ArcGIS dot density for small areas
Jan
8
asked ArcGIS compute nearest network neighbour for each point
Nov
25
accepted Spatial Network Cleaning
Nov
25
answered Spatial Network Cleaning
Nov
11
comment ArcMap 'go back to previous extent' doesn't
Restarting ArcMap fixed it :) Sorry for polluting gis.se with such a silly question. Should I delete it?!
Nov
11
asked ArcMap 'go back to previous extent' doesn't
Nov
7
revised ArcGIS planarize vs autofixing “must not intersect or touch interior” topology
added 252 characters in body
Nov
7
asked ArcGIS planarize vs autofixing “must not intersect or touch interior” topology
Oct
7
accepted Can ArcGIS Pro use Python toolboxes written for ArcMap?
Oct
7
asked Can ArcGIS Pro use Python toolboxes written for ArcMap?
Sep
24
awarded  Autobiographer
Jul
16
comment Software to detect intersections (within a tolerance) between 3d polylines
I don't think the interset 3d tool in ArcGIS 3d analyst works with polylines. The python idea is based on GEOS, which I have used: GEOS suffers from the same problem as ArcGIS (it's not true 3d and will project to the xy plane before intersecting). Presumably shapely would do the same. But I may well check out those others!
Jul
16
comment Software to detect intersections (within a tolerance) between 3d polylines
Thanks. For a set of polylines rather than a single pair, efficiency becomes an issue - if I wanted to find all 3d intersections, do you know if the database implementation has an efficient way of searching for this, like Bentley-Ottmann or at least using bounding boxes?
Jul
15
asked Software to detect intersections (within a tolerance) between 3d polylines
Jul
2
awarded  Curious
Jun
26
accepted arcpy: join feature class (one to one) and get feature id of each joined object
Jun
26
comment arcpy: join feature class (one to one) and get feature id of each joined object
This is what I did in the end (copying the object IDs). Seems odd that Arc doesn't provide the JOIN_FID, but stranger things have happened before.