13,103 reputation
1372159
bio website maphew.com
location Yukon Territory, Canada
age
visits member for 4 years, 11 months
seen Jun 30 at 22:17

hewer of maps, old time techie, newbie developer

woohoo, http://gis.stackexchange.com/ now open to the public!

personal - www.maphew.com
in-between - yukongis.ca
work - www.environmentyukon.ca

profile for matt wilkie on Stack Exchange, a network of free, community-driven Q&A sites


May
20
comment How to set feature vertex Z from an intersecting feature's Z?
here are my incomplete attempts to resolve this: github.com/maphew/arcplus/commit/…. This part of the overall project has gone dormant, so I won't be following up for awhile.
May
20
comment How to set feature vertex Z from an intersecting feature's Z?
Thanks for Integrate. I didn't like how FeatureToLine moves vertices unpredictably and breaks things into smaller pieces. I've been given the "time to move on!" signal from supervisor so won't be following up on the arcobjects portion right now. This part of the bigger project has been put to sleep. :-/
May
19
comment ArcGIS/arcpy: Geometry object comparison methods not working. Do they take z values into account?
Might have to do with floating point rounding/truncation when a spatial reference system is not explicitly set, see gis.stackexchange.com/questions/40481/…
May
19
comment How to set feature vertex Z from an intersecting feature's Z?
@Hornbydd yes. I want to assign blue Z at the point of intersection to equal red Z.
May
15
comment Seeking web service that returns elevation profile between two points and can process 5000 requests per second
What kind of hardware and web server setup you need for 5k/s is something out of my league, and very challenging. For instance the absolutely smallest likely web response, even if a static text file, is one Ethernet packet (~1,500 bytes) then 5k/s works out to 60 megabits per second in bandwidth alone (ref). What you're talking about is expensive -- in terms of money to run and time/intellectual effort to build.
May
15
comment Seeking web service that returns elevation profile between two points and can process 5000 requests per second
dem tiles: A DEM is just a specialised kind of raster. Starting points would be gdal2tiles.py and gdal_retile.py for building the dataset. Any gdal ogr -using map server should be able to read the result.
May
15
comment Exploring ArcObjects through C# or VB from Python background
related: Guidelines for using ArcObjects from Python
May
15
comment ArcObjects/Python: Add JPG to layout
excellent answer. Please consider recasting (without duplicating) for gis.stackexchange.com/questions/129456/…
May
15
comment How to interpolate points along a line in Python for ArcGIS 9.3?
@Damon I would link to your identical answer on the other thread as a comment to this question here, and then delete this answer. (and thanks for the code sample too! useful for me today)
May
15
comment Running Model From Catalog Menu?
It's too hard to read the diagram. However my hunch is that when run from ArcCatalog it's not using or reading from the layer file on disk. It looks like you have 2 fairly discrete processes. As a troubleshooting step, I would save each one into a different model, and then run one after the other. Repeat until exact location of error is found.
May
15
comment Seeking web service that returns elevation profile between two points and can process 5000 requests per second
Those are very specific and very demanding numbers without context. If those numbers are real, you're going have to satisfy the ultimate aim a different way, it's trying to buy the moon with a penny. Google's Elevation API limit is 10 requests per second for paying customers, developers.google.com/maps/documentation/elevation/#Limits. Also see api4dev.com
May
15
comment How to set feature vertex Z from an intersecting feature's Z?
@Hornbydd, not at present but I can ensure there is if that's necessary or makes it easier.
May
14
comment How to set feature vertex Z from an intersecting feature's Z?
@radouxju red line has constant Z, blue line does not. Red line should be read-only and unaltered by the operation.
May
14
comment How to interpolate line Z from sparse attribute values
Thank you very much. This provides a solid starting point, and is much better than the rabbit hole I was in, trying to adapt @Tomek's gis.stackexchange.com/a/18655/108 to my circumstance.
May
13
comment ArcObjects + comtypes at 10.1 and newer
I removed the 10.1 version specific tag because this same error and fix applies to 10.1, 10.2, and 10.3 (and we don't have a 10.x tag). Also it doesn't need arcgis tag as there aren't any arcobjects without it.
May
13
comment How to interpolate line Z from sparse attribute values
Thanks for the pointers @MichaelMiles-Stimson, but generating a surface to interpolate from isn't viable. The known-Z points are too sparse. I know how to get straight to ArcObjects from python, it's the syntax for using the objects themselves that stymies me. I guess it's time I cracked that nut though. ;-)
May
12
comment How to interpolate line Z from sparse attribute values
interpolate Z between polyline's vertices (IZ.InterpolateZsBetween ?) looks relevant, if can figure out how to use from python, and span lines.
May
7
comment Enabling public viewers and private editors of feature service on ArcGIS Online For Organizations?
If the feature service is not open to public at all, then the issue I describe doesn't apply. However if the FS is displayed in a public map, any public map, and at the same time the FS is edit-enabled for anyone at all, then anonymous users can create/edit/delete data in the FS with minimal effort. In the case where the FS is never displayed in any fashion outside the authorized group, the data can still be edited anonymously, but the effort to discover the fs-ID in order to get to it is non-trivial. The door is changed from concealed to hidden, but it isn't locked.
May
7
comment Enabling public viewers and private editors of feature service on ArcGIS Online For Organizations?
Can't fire someone who doesn't work for you. I added a feature to Ben's edit-restricted group from a personal public account, essentially it's an anonymous edit. I didn't need or use his webmap to do it.
May
7
comment Enabling public viewers and private editors of feature service on ArcGIS Online For Organizations?
This isn't effective as the edit/non-edit permissions are controlled at the group level. Anybody can bypass your groups and go straight to the edit-enabled feature service. In effect they create their own group that has whatever permissions they like. The underlying feature service is either open or closed, without any gradation between. See Ben Mearn's answer and commentary.