Latest Contributions by GerryGabrisch

‎07-29-2013

Do you need to have a randomly shaped polygon of a specific size? If so, that would require some programming. What if you create a fishnet of rectangular polygons (using the create fishnet tool in Toolbox, and a new attribute (type double) for the fishnet, populate the new attribute with random values, figure out your sample size, then select that many polygons from the fishnet?

‎07-26-2013

Why not use the Add Surface Information tool in the 3D Analyst toolbox?

‎07-15-2013

The proper way would be to learn-use Hec-Ras (http://www.hec.usace.army.mil/software/hec-ras/). If you just want to dabble you could experiment with these (unverified-not QA'd) detrending tools available here: ftp://lnnr.lummi-nsn.gov/GIS_Scripts/ I don't have any help documentation outside the toolbox tools so feel free to write if you need help. geraldg@lummi-nsn.gov

‎06-07-2013

Here are a couple of scripts that have not given me any problems, are not constrained by license levels, and they look through the root folder and any sub-folders. You will need to download a couple of python libraries but it is all spelled out in the readme. The read me, Python code, and the ESRI toolbox are here: ftp://lnnr.lummi-nsn.gov/GIS_Scripts/CreateShapefilePointsFromGeotaggedPhotos/

‎06-06-2013

I have a feature class of topologically correct river features. The line???s are single part features, they have the correct flow direction, and each line end is snapped to its downstream recipiant. I have created routes using the linear referencing tools. I exported the end nodes, and used the end node and the route to calculate river mile. The trouble is... In about half of the cases the distance along the line is zero because the linear referencing tools are getting a distance from the line that produced the end node. What I want is to get the distance from the downstream intersecting line (which will be greater than zero!). How do I accomplish this? I have tried using the line work to linear reference using the routes, but this just returns a start distance of zero, and an to distance that is equal to the line distance and not the distance along the line it intersects. Any help would be appreciated.

‎06-03-2013

This tool works in 10 and creates a new feature class of points at equal distances along a line. The input data needs to be in a projected coord sys. ftp://lnnr.lummi-nsn.gov/GIS_Scripts/CreatePointsAlongALine/ Good Luck

‎03-14-2013

Yes, I can start the Service Manager and if I go into Rest I see this: { "currentVersion": 10.11, "folders": [ "Utilities" ], "services": [ { "name": "SampleWorldCities", "type": "MapServer" } ] }

‎03-11-2013

Even though I am new to Server, I have successfully installed ArcGIS for Server 10.1, register folders, and publish a simple service. Then I installed the ArcGIS Server Silverlight viewer. Now I can no longer publish services or view services including the default World Cities service. The computer just hangs when I try to publish. I cannot get the Silverlight app to create a web map. I have restarted the server but this has not helped. The IS department assures me that we meet the specifications for the software. Any advice is appreciated.

‎03-07-2013

I am trying to automate the conversion of several geodatabase feature classes to shapefile. The code below produces a shapefile in the output directory but then it throws this error.... PYTHON ERRORS: Traceback info: File "C:\gtemp\ShareLummiData.py", line 12, in <module> arcpy.FeatureClassToShapefile_conversion(LummiReservation, OutputDirectory) Error Info: object of type 'dict' has no len() ArcPy ERRORS: I would like to duplicate this process for several feature classes. I could put an error handler here to catch the error in ESRI's code but if I do, I will not catch real errors. Any ideas would be helpful. try: import arcpy, sys, traceback OutputDirectory = r"C:\gtemp\aa" LummiReservation = r"Z:\Data\Boundaries\Administrative\Lummi.gdb\TribalBoundaries\LummiReservation" arcpy.FeatureClassToShapefile_conversion(LummiReservation, OutputDirectory) except arcpy.ExecuteError: # Get the tool error messages msgs = arcpy.GetMessages(2) # Return tool error messages for use with a script tool arcpy.AddError(msgs) # Print tool error messages for use in Python/PythonWin print msgs except: # Get the traceback object tb = sys.exc_info()[2] tbinfo = traceback.format_tb(tb)[0] # Concatenate information together concerning the error into a message string pymsg = "PYTHON ERRORS:\nTraceback info:\n" + tbinfo + "\nError Info:\n" + str(sys.exc_info()[1]) msgs = "ArcPy ERRORS:\n" + arcpy.GetMessages(2) + "\n" # Return python error messages for use in script tool or Python Window arcpy.AddError(pymsg) arcpy.AddError(msgs) # Print Python error messages for use in Python / Python Window print pymsg + "\n" print msgs

‎01-10-2013

Add surface information in the 3d analyst toolbox will populate your line nodes with z values.

‎12-18-2012

If you know the elevation of the 20 foot section of the top of the dam and its location, then create a polygon of the 20 foot piece. Create buffers at 3 meter intervals to this polygon. Populate the attribute table of the buffer rings with the appropriate descending values. Convert the buffers to a raster using the descending elevation values. Use the con function to alter your new damn model. If the dam pixel is higher in elevation than the surface model then keep it, otherwise replace the pixel with NoData. The result should be a model of your dam.

‎08-10-2012

This script my get you were you want to be.... http://arcscripts.esri.com/details.asp?dbid=14349

‎08-01-2012

Use one line as the source to create a Euclidean distance raster then use the other line with either zonal statistics or add surface information.

‎07-17-2012

If a.tif is georeferenced there should be a a.twf (world file) associated with it. If b.tif has the same cell size and extent you can save a.twf as a new file b.twf in the same location as b.tif. Then use shutil to copy the file.... import shutil shutil.copyfile(r"C:\gtemp\a.tfw", r"C:\gtemp\aa.tfw")

‎06-12-2012

FYI, the Python example for the hillshade tool is incorrect (see link below) and returns an error "name 'HillShade' is not defined". The example shows.... outHillShade = HillShade(inRaster, azimuth, altitude, modelShadows, zFactor) When it should be... outHillShade = Hillshade(inRaster, azimuth, altitude, modelShadows, zFactor) http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Hillshade/009z000000v0000000/

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My Ideas

Latest Contributions by GerryGabrisch

Re: Simple random polygon question

Re: Extract Evevations from Endpoints to create 3D polyline?

Re: How can i illustrate flooding-zones

Re: Help. I am receiving error 999999 when I try GeoTagged photo to points. Confuse

Linear Referencing, identify the river mile intersection of the down stream line

Re: Convert Line to Dense Points - Model Builder

Re: Server stopped working after installing ArcGIS Viewer for Silverlight.

Server stopped working after installing ArcGIS Viewer for Silverlight.

Error with Feature Class to Shapefile in Python

Re: Assign Z value from DEM to line ends

Re: Calculating the volume of a dam sight

Re: Volume Calculations

Re: Calculate Min, Max, Avg Distance Between Two (nearly) Parallel Lines

Re: Programmatically georeference raster from other raster

Hey ESRI, your hillshade python code example is wrong.

Please stop sending me direct mail

User cannot see a directory in Catalog but it is v...

Re: Cannot select or edit elements in Layout view

Re: Creating KML files with Attribute Data

Hey ESRI, your hillshade python code example is wr...