Latest Contributions by JoannaMerson1

I am trying to run the terrain preprocessing arcHydro tools from a standalone python script. However, upon running ArcHydroTools.BuildWalls(), I get the error: System.InvalidCastException: Conversion from string "" to type 'Double' is not valid. ---> System.FormatException: Input string was not in a correct format.    at Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat)    at Microsoft.VisualBasic.CompilerServices.Conversions.ToDouble(String Value, NumberFormatInfo NumberFormat)    --- End of inner exception stack trace ---    at Microsoft.VisualBasic.CompilerServices.Conversions.ToDouble(String Value, NumberFormatInfo NumberFormat)    at Microsoft.VisualBasic.CompilerServices.Conversions.ToDouble(String Value)    at ESRI.APWR.ApHydro.ArcHydroOp.BuildWalls(ApLayers apLayers, Double innerWallHeight, Double wallBuffer, Double breachLineBuffer, ITrackCancel& trackcancel, IGPMessages& messages, String& exMessage) in C:\Builds\HydroSolutions\10.3_ArcHydro\Sources\ArcHydroTools\src\ApHydro\ArcHydroOp.vb:line 13815 Failed to execute (BuildWalls). I have used ArcHydroTools.SetTargetLocations to set a local folder and GDB. The previous tool in my python script, ArcHydroTools.DEMReconditioning, runs just fine. The output of ArcHydroTools.BuildWalls() is in a folder. I have tried clearing my temp folder. I have arcpy.env.mask set to the same layer as the outer walls. I am using python 2.7.8, arcpy is from arcMap 10.3.1, and Arc Hydro for ArcGIS 10.2 (version 10.2, March 30 2015) Any suggestions would be appreciated. ... View more

I have created a vector field of a netCDF using the Vector Field renderer (see: Drawing raster data using vector symbols​). Now I'd like to display a legend that indicates what speeds the lengths of the arrows represent. However, inserting the layer in the legend just produces a single symbol. See attached. What can I do!? I have tried, adding the NetCFD layer again as vector layer, but then I don't have any information about the resampling done by the Vector Field renderer. ... View more

Hi, I am trying to write a script that will run the Interactive Flow Path Tracing Tool, which is on the arcHydro toolbar. I would like to use a script so that I can process a large set of input locations. My plan is to do so using Python. However, I cannot find the tool in the arcHydro toolbox, and do not think there is a way to access the tool on the toolbar with arcPy, as I would have with VB. Does anyone have a suggestion for how to access the Interactive Flow Path Tracing Tool in a Python script? Thanks, Joanna ... View more