Latest Contributions by Robert_LeClair

Sarah - Have you considered using Hot Spot Analysis (Spatial Statistics Toolbox) rather than Kernel Density?  There is a methodology one can use to regarding XY locations and distance band calculations. Some resources to consider: http://blogs.esri.com/esri/arcgis/2010/07/13/spatial-statistics-resources/ http://resources.arcgis.com/en/help/main/10.1/index.html#/Hot_Spot_Analysis_Getis_Ord_Gi/005p00000010000000/ Hope this helps! Regards, Robert LeClair ... View more

Okay, I'm assuming this is your workflow - please correct me if I'm wrong.  You have x number of rasters to create your cost surface. You used the RECLASSIFY GP tool to reclassify your rasters to the same "scale." Once all your input rasters have been reclassified to the same scale, you used the WEIGHTED OVERLAY GP tool to create your cost surface. Now you want the cost surface to have "good" cells dedicated to the preferred alternative. So what I would try is the EXTRACT BY MASK GP tool with the original cost raster as the input, the route as the Input Raster or Feature Mask Data and create a new raster (RASTER1) that is for the route. Then I would use the CON GP tool that uses an expression where VALUE IS NULL - would get a zero and non-NULLs would get a 1 or a 4 depending on what is considered "good" by you and create a new raster (RASTER2). The last step is to use the CON GP tool again where: Input Conditional Raster:  RASTER2 Expression Optional:  VALUE = 1 (or 4 - depends on what's good) Input True Raster or Constant Value:  1 (or 4 - depends what's good) Input False Raster or Constant Value (optional):  Original Cost Surface Raster Output Raster:  RASTER3 So in SUM, what this "should" do is extract those raster cells that "overlap" with the preferred corridor.  Then you set a condition where it's preferred cell value or NULL.  Then you set a condition where if it's preferred cell value, the raster cell gets a 1 (or 4) and the other cells get the original cost cell value.  "Should" work...good luck! ... View more

To my knowledge, the web course was written for ArcGIS 10.0 but the concepts still apply at 9.3.x. With regard to 1=good and 4=bad, it's a human interpretation versus a computer interpretation.  When you use the Weighted Overlay tool to create your cost surface, you have the option to create an evaluation scale of any form you wish.  It's up to you to determine what's "bad" and what's "good."  The key is to be consistent through the entire workflow.  Make sense? ... View more

One workflow is to use the MINUS geoprocessing tool from the Spatial Analyst extension.  Basically, it's subtracts the cell value in the 2nd raster from the cell value in the 1st raster and writes a new raster with the cell differences. Regards, Robert LeClair Esri-Denver ... View more

Jared - One way to learn more about the least cost path workflow is to register for the Distance Analysis using ArcGIS 10 web course.  It goes into straight line distance and least cost path analysis workflows that may assist you.  I teach the now retired Spatial Analyst class for Esri - feel free to email at rleclair@esri.com if you have specific questions. Regards, Robert LeClair Esri-Denver ... View more

Dave - The short answer to your question is - yes, each subtype can have it's own domain.  One attribute field will be an integer and used for your subtype.  Another attibute field (text, integer, float, etc.) will be for your attribute domain. The long answer is:  In the Catalog window in ArcMap, right click the feature class and click properties.  Select the Subtypes tab to build your subtypes based upon a short or long integer field type.  On the lower right of the Subtypes panel, you'll click the Domains button to build attribute domains.  You can build a specific attribute domain for aerial or buried if you wish or just one big attribute domain for both - depends on the attributes.  Make sure your attribute domain field type  (text, integer, float, etc.) matches the attribute field type (text, integer, float, etc.)  After you build the domain(s), click OK and return to the subtype panel.  At the top of the Subtype panel, select the first subtype - aerial or buried and then navigate towards the bottom of the subtype panel - you'll see "Default attributes and domains" - and for the ownership field, click the domain box to apply the specific domain to the subtype.  Repeat this for the 2nd subtype.  Click OK.  Now you have a specific domain for a specific subtype. This workflow is described here:  http://resources.arcgis.com/en/help/main/10.1/index.html#/Associating_default_values_and_domains_with_tables_and_feature_classes/001s00000009000000/ Hope this helps. Regards, Robert LeClair Esri-Denver ... View more

Hmmmm, I would recommend you contact Esri Support Services at your earliest convenience.  They'll be able to view your screen and troubleshoot the cause of this error. ... View more

Shaen, Try this: 1.  Launch the PowerPoint application. 2.  Go to File > Options> Add-ins. 3.  Go to Manage > select COM Add-in. 4.  The ESRI maps for Office > Go. Check on the add-in for ESRI . 5.  In the Manage option > Disabled Items > Go. Enable the ESRI add-in add-in. Does the ribbon now appear in PowerPoint?  Please advise. Regards, Robert LeClair Esri-Denver ... View more

Danette - In briefly researching your question, there is quite a bit about the State of Wyoming Department of Revenue's Conversion Standard for ArcGIS.  Please see the following brief for details:  http://pdf.aminer.org/000/295/153/conversion_of_high_level_information_from_scanned_maps_into_geographic.pdf Further, it would seem an add-on called GeoWare - http://www.coloradocustomware.com/Geoware.aspx - may be what you're looking to do.  Do you have access to GeoWare?  Please advise. Regards, Robert LeClair Esri-Denver ... View more

Josh - One way is to open SQL Server Management Studio and open the geodatabase in question (Databases tab -> Geodatabase -> Tables and Select (the Top 1000 rows) for the dbo.SDE_version repository table.  The tables schema will have MAJOR, MINOR, BUGFIX, etc.  The MAJOR is the release 9 or 10 for example and the MINOR is the dot release .3 or .1 for example. Hope this helps! Regards, Robert LeClair Esri-Denver ... View more

Tom - At the 10.0 release, the MOMA tool (Multiple Output Map Algebra) tool was retired in favor of the Raster Calculator.  You can execute simple single line map algebra statements or complex nested algebraic statements in the UI.  With full Python integration at 10.0/10.1, you can execute multi-line algebraic statements in the Python window or any Python IDE.  If you have any SOMA (Single Output Map Algebra) or MOMA tools in a 9.3.x release or earlier within a model, then they will execute in a 10.0 environment.  Hope this helps clarify the question. Regards, Robert ... View more

Tom - According to the "How Raster Calculator works", the tool is designed for single-line algebraic expressions.  The old 9.3 "Multi-Output Map Algebra" GP tool would do the syntax (somewhat) that you're looking for.  You can implement the multi-line expression within a Python Window if you wish, but here's the syntax I used in the Raster Calculator to get the desired output. OutRas= Raster("Viewshed") + (Raster("Elevation") * 2) Define your output raster and you've got output. Hope this helps! Regards, Robert LeClair Esri-Denver ... View more

Roland - I would consider using a Mosaic Dataset to reference your original raster datasets.  You can order the Mosaic to control overlap so as to avoid the black pixels you're seeing.  To learn more about MD - please visit http://resources.arcgis.com/en/help/main/10.1/index.html#//009t00000037000000 Good luck! Robert LeClair Esri-Denver ... View more

*bump* - still trying to find an answer to the original question... Thx! ... View more