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| bio | website | |
|---|---|---|
| location | England, United Kingdom | |
| age | 37 | |
| visits | member for | 2 years, 10 months |
| seen | May 22 at 13:12 | |
| stats | profile views | 122 |
I am a GIS Consultant. I love C# and Java type languages and have dabbled in VB a long time ago.
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May 10 |
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Quick way to make a convex hull @whuber - yeh, those are really good ideas - I think the only drawback on this methodology are the actual spatial and attribute selection functions - they take an absolute age!, and I have put a spatial index on the point featureclasses! However this may be due to fact SDE is running on a crappy desktop box, I am now in the middle of transferring the data onto a proper server with the appropriate SDE tuning for vector data. I will feed back when I get a result. PS - I think it may be worth writing this up as an answer then I can award you the points etc. |
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May 10 |
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Quick way to make a convex hull @whuber - I have put your idea into Python code now and it seems to have worked excellently for a feature class of 11 million points - it cut down the processing to 750K points and the convex hull was perfect. Now doing a 16 million one, but alas no luck yet - I have applied a new spatial index in the hope it will speed things up. |
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May 10 |
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Quick way to make a convex hull @Hornbydd - I didn't actually know that, but thanks, I will look into that. |
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May 8 |
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Quick way to make a convex hull @whuber - yep totally agree with your thoughts. Just trying to work out whether your original idea would work...there's definitely something it it :) |
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May 8 |
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Quick way to make a convex hull @whuber - the performance issue is: looping through ALL the points in the search cursor to put them into an array in order to make a multipoint out of them - that takes a crazy amount of time! |
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May 8 |
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Quick way to make a convex hull No - using Oracle. That's an option, to use the database side - but I'm just working through Python at the moment. |
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May 8 |
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Quick way to make a convex hull No - I am creating a convex hull FROM the points, but first you must create a mulitpoint first, then call the convexHull() function. |
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Oct 31 |
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How to migrate an extension from ArcGIS 9.3.1 to 10? @KirkKuykendall - yep, that microsoft article worked for me too - it was so obvious in the end (NOT!). Thanks, this has been a lifesaver. |
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Jun 27 |
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Using primary keys with SDE (Oracle) best practice? Ahh - I see the doc provides most answers - a case of RTFM! Cheers. |
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Jun 22 |
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Using primary keys with SDE (Oracle) best practice? I'm not doing any spatial queries - I'm only trying to get an id for a country and then use that id in a junction table to associate with another entity - thus maintaining a M-M relationship with my data. And I'm not creating any spatial views. |
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Jun 22 |
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Using primary keys with SDE (Oracle) best practice? Should I be concerned with USER_SDO_GEOM_METADATA if I add my own primary key? |
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May 11 |
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Spatial Definition Queries? I am so happy to have found this out - it's just the ticket!!! |
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May 11 |
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Spatial Definition Queries? Really! That could work! |
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May 11 |
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Spatial Definition Queries? Yes, I have seen this, but I think you would have to create a new FC from the resulting featureCursor. What I really want to do is limit the features spatially just before ILayer gets added to the TOC in ArcMap. |
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May 11 |
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Spatial Definition Queries? Just load it into ArcMap as normal. Basically I know you can do a Layer Definition on a layer then load into ArcMap but that only works with attributes, not the spatial column - I was just wondering if I may have missed anything, and it was in fact possible to do a spatial definition query. This would definitley need to be done with rasters too. |
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Mar 23 |
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Deploying Custom dll Commands etc in ArcGIS 10 Yes - the walkthrough doesn't reflect the default location - as it is missing the {Manufacturer] placeholder. Subtle but vital. Cheers. |
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Mar 2 |
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How to create floating-only window in ArcMap? I like this NativeWindow way - very clean. |
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Feb 28 |
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Accessing ArcGIS layers from seperate thread Its horrifically complicated - you think they would have sorted this after all these years!! |
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Feb 14 |
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Adding Button as Icon and Text to toolbar in ArcMap I think it should probably be set up through NewDocument method of a bland Extension class. (I tried to find an example of this question on the forums but obviously used the wrong search words - nice find!) |
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Feb 9 |
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Adding Button as Icon and Text to toolbar in ArcMap This only shows the icon - but I also need text next to it as well. I think it has something to do with: ESRI.ArcGIS.SystemUI.esriCommandStyles.esriCommandStyleIconAndText |
