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Kasja; You can go to this webpage http://www.hec.usace.army.mil/ and download Hec-GeoHMS, look on the left side of the page under latest software releases. it will install ArcHydro for you since it is a prerequisite to use HEC-geoHMS. Make sure that you remove all applications related to previous ARC Hydro installs and clean off your registry before installing. The nice thing about using the HEC-geoHMS install is that everything is install for you automatically, so you don't have to worry about if you have installed the various required software in the correct order.
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12-02-2010
08:47 AM
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I am working with ArcHydro version 1.4. Click on the help button on the right of the toolbar. which should bring up a compiled HTML help document. I would like to add that I have downloaded my version from the US Army Corps of Engineer Website. However, I can't imagine setups being different between ESRI and the corps.
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11-29-2010
12:52 PM
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Kasja; I would also check if you have Microsoft .NET framework 2.0. Otherwise I would upgrade, looks like you have an old version of ArcHydro. Mine is version 1.4 and dated december 8 2009.
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11-29-2010
06:36 AM
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Hi All; I am using both the watershed and subwatershed delineation tools and I have noticed some strange behaviour where the watershed tool generalizes the boundary while the subwatershed tool maintains the boundary from the catchment grid operation. has anyone come accross this? As far as I remember, I can't recall the watershed delineation tool generalizing boundaries.
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11-23-2010
09:32 AM
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This tool is only available with ArcInfo licenses. If you are not licensed you can use this alternative from Susan Jones. http://arcscripts.esri.com/details.asp?dbid=14625
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11-11-2010
04:06 AM
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Lorna please read below. Hi Jeff, There are a couple of reasons. 1. The code doesn't just provide a GUI for the parameters, it also uses that information to select which script to run. I could just use a separate script tool for each task, but I want to make it intuitive for other people to use when I'm gone. Lorna; Running a python script from VBA can be a PITA. If you have several scripts that you need to run, one option could be to put all the code in one big script and have a drop down menu to pick which part of the script to run. if you only do geoprocessing, I would try to stick to python. However, if you need VBA for GIS operations that are not available in the toolbox, you may need to stick to VBA. The thing however is that VBA will eventually go the way of the dodo as version 10 is the last version with VBA support. 2. I didn't think that you could include a combo box in the toolbox GUI. 3. I'm curious to know how it's done. Really easy see attached word document and toolbox in zipped file. The demo toolbox can be imported into arcgis. Please forgive my bad grammar and layout in the attached document. to Conclude, you can do a lot with python and it's only gonna get better with time. I hope this helps.
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11-08-2010
06:32 PM
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Lorna; Why would you use VBA to program a GUI, when an interface that looks like the image I've attached can easily be built within the toolbox? 😉
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11-05-2010
04:34 PM
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What are M[0][1]? are these values from a python list? if so try, row.SetValue(SchoolLevel, M[0] + M[1])
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09-16-2010
12:42 PM
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Why don't you do a line on polygon intersect? it would be a lot quicker. then you could use Dan Patterson's split layer by attribute script @ http://arcscripts.esri.com/details.asp?dbid=14127 to export to individual shapefiles. if you really want to code, take a look here http://forums.esri.com/Thread.asp?c=93&f=1729&t=297920&mc=5#msgid930410 this should get you started. Cheers
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07-30-2010
12:42 PM
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You need a search cursor and as you loop through the feature class table create a feature layer with each feature, then use the feature layer to clip your raster. Here is a little bit of code that should help. Wrows = gp.SearchCursor(WatershedPath) Wrow = Wrows.next() Nfeatures = gp.GetCount_management(WatershedPath) gp.addmessage(str(Nfeatures) + " Records to Process") count = 1 while Wrow: [INDENT] WFValue = str(Wrow.GetValue(WLayerF)) gp.addmessage("Processing watershed " + str(WFValue)) gp.MakeFeatureLayer_management(WatershedPath, "lyr", "OBJECTID="+str(Wrow.OBJECTID)) gp.ExtractbyMask_sa(IFI, "lyr", OutFolder + "/" + WFValue) gp.delete("lyr") Wrow = Wrows.next()[/INDENT] Watch for the indent as I just can't figure out how to post python code like in the old forum. How the hell does one post code in this contraption?
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06-20-2010
11:22 AM
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Dan; I would definitely take a look at the ArcHydro Model.
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06-15-2010
06:44 PM
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try setting the parameter as feature layer instead of feature class.
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06-11-2010
03:37 PM
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Here is a screen cap of the tool location in the toolbox. you can either use the zonal statistics or zonal statistics as table to generate your summaries per counties
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04-08-2010
04:43 PM
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What you could do is convert your surface into a raster and calculate zonal stats for all your polygons in one operation using spatial analyst.
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04-08-2010
03:01 PM
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