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SteveLynch
Esri Regular Contributor
since
07-04-2014
Thursday
888
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My Ideas
(0 Idea Submissions)Latest Contributions by SteveLynch
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Luke TopoToRaster will convert the contours into a DEM. Steve
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09-20-2011
02:55 PM
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Paul As far as the crash is concerned, please contact Esri Support or email me ([email protected]) the data and the parameters that you are using and which version of ArcGIS. As far as which interpolator to use. I would suggest some initial exploratory analysis. Use the CreateSubsets GP tool to create a training and testing subset. Also look at cross validation. Regards Steve
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09-02-2011
07:29 AM
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There is a huge difference between the barrier option and using the MASK. IDW's barrier option uses a "line of sight" method to determine which points will be used in the interpolation. I.e if I can see you, I'll use you. The barrier also has infinite height. MASK on the other hand is done after the fact. I.e after the interpolation is done the area is clipped or masked. Spatial Analyst has 2 interpolation methods that use barriers. Geostatistical Analyst, from Version 10, also has 2 barrier interpolators and these use a non-Euclidean distance approach. Hope this helps. Steve
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09-01-2011
08:41 AM
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Actually didn't display expressions come in at 10, so it uses a display expression. Prior to 10 it was on the Fields tab and was called Primary Display Field
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08-30-2011
02:54 PM
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Ted We introduced the new Wizard in 10. The reason it stays on top is to ensure that it does not get "lost". I.e. it gets moved off the page or something else gets on top of it. Also, because it is an interactive tool, it should be the focus of attention. I.e. Add Field tool can be run before or after the Wizard is used. We do take note of your concerns and we'll see if we could change it in some or other way. To change the order of which field comes first. Setting the field to be used is not a Geostats function but an ArcGIS function and it has been around for a while. - Right click on the Feature layer in the TOC - click on Layer and then on the Display tab - under the Display Expression section select the Field (note for Geostats it must be numeric) - hit OK That field will be the default field in the ESDA tools and also in the Wizard.
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08-26-2011
08:20 AM
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Ted These 2 ESDA tools creates "dots" on the graph, where each dot represents what happens between 2 points. The number of points in the graph can be calculated by computing n(n+1)/2, where n=number of points. We have done testing and determined that n=500 is sufficient, i.e. 125,250 dots on the graph. Using more than 500 points really does not tell you much more, so we decided to warn you each time. n=1000 will create half a million dots, will you learn any more than if you used n=500? A rule of thumb when doing ESDA is to create a subset (use the CreateSubsets GP tool) if you're using a large dataset. 1000 is large when talking to geostatisticians. I cannot repro the crash. Hope this helps and thanks for testing Steve
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08-26-2011
08:05 AM
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Roy Delete you Windows temp folder and your default file GDB. If this does not work (along with Jeff Swain's suggestions above in this thread) then please contact Esri Support. BTW, can you run Slope or Aspect and what happens if you use .shp input to IDW and output to Esri GRID? Regards Steve
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08-26-2011
06:13 AM
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Roy Can you run IDW using this data? What version of ArcGIS are you using? Input data format - .shp, file or P geodatabase or ? Output format - grid, fGDB raster or ? Thanks Steve
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08-23-2011
09:25 AM
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SP2 contains all the fixes in SP1. There is a problem with joined data on a pGDB in SP2. Please post your exatct steps or email me the data and your workflow ([email protected]) Thanks Steve
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08-15-2011
09:44 AM
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There is no update for "ArcGIS 9 Using ArcGIS Geostatistical Analyst", it is now contained within the ArcGIS documentation. The tutorial info can be found in the help or online at http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Introduction_to_the_ArcGIS_Geostatistical_Analyst_Tutorial/0031000000nz000000/ Steve
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08-15-2011
07:22 AM
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