Latest Contributions by GinaO_Neil

‎03-18-2024

Hi @GelarehSmith2, The new document and data are now available! Please see above. Thanks, Gina

‎03-18-2024

My Arc Hydro teammates have created SO many useful tools, user guides, blogs, webinars, etc. over the years. We're bringing all of that content together in one location to help our GIS community get the most out of Arc Hydro. This site contains the Arc Hydro essentials, individual tool documentation, workflow guidance, and more! https://esrips.github.io/ah-docs/ While it is still a work in progress, we're excited to share it now and start collecting some feedback. P.S. Please continue to use Esri Community to reach out to us! This new site is a supplement, not a replacement, to Esri Community.

‎02-20-2024

Good to know. Thanks for the update, Dan!

‎02-02-2024

Hi Dan, Are your input datasets in a projected coordinate system? I recommend aligning all data with the projection of your DEM. DEMs should have linear horizontal units that match the vertical units (e.g., XY and elevation all in meters). Best, Gina

‎01-22-2024

Hi Candace, Glad to hear WIM may be useful for your organization! I am working to release an updated WIM User Guide with new testing data. Ideally, you would begin from these materials since the User Interfaces have changed in WIM since the current User Guide. To avoid delaying your work, I can share a draft WIM Exercise with that new data. It goes through the workflow step-by-step and should serve the same purpose as the User Guide. Can you message me your email address so I can share these interim materials with you? Thanks, Gina

‎10-11-2023

Hi @tany6chakraborty . It looks like there is something going on with you Threshold Points that are created internally. Let's try ruling out common errors first. Please try the following: Ensure your input datasets are in a projected coordinate system retry in a new ArcGIS Pro project that is saved to a filepath with no spaces Let me know if anything changes after these tests!

‎07-05-2023

Sure thing. Please email me and we'll get something scheduled! goneil@ersi.com

‎06-29-2023

It looks like your constraint is capturing an area with no wetlands. I may not be fully understanding your workflow. But I recommend the following: choose one HUC12 in your study area and clip a 3m DEM to that area derive predictor variables for that clipped DEM use Preprocessing Groundtruth Data to prepare your known wetlands, using the HUC12 boundaries as the extents create a polygon feature class within your HUC12 to use as your constraint (create a polygon that encompasses a mix of both wetlands and nonwetlands) run Train Test Split with the constraint continue with WIM workflow

‎06-29-2023

Can you include a screenshot of your training data?

‎06-29-2023

No problem! Let me know if you continue to run into issues. I am happy to set up a screenshare as well. Good luck!

‎06-29-2023

Yes, that's a very large dataset. Over several tests I found that wetlands were better predicted by topographic indices calcualted from 3m DEM than from a 1m (or higher res) DEM. I recommend resampling your data up to 3m and working in one HUC12 at a time - i.e., calculated predictor variables for a single HUC12 extent. That sounds like amazing ground truth data! You should have the opportunity in that case to train wetlands in one HIC12 and use the trained model to predict wetlands in a separate HUC 12

‎06-29-2023

Hi @HusamAbuOqer , I believe your study area is too large. I recommend working in units of watersheds and from DEM data that is 3m resolution. I've found that 3m DEMs clipped to HUC12 watersheds works well with the tool's size limits. How large is your area? And are you confident in both the wetland coverage and nonwetland coverage in this entire area?

‎06-26-2023

Great! You may be seeing a prediction value of just the 0 class if your training data is highly imbalanced towards the 0 class. If the imbalance is the issue, you can try significantly undersampling the majority class (0) when running Train Test Split: set the sampling percent for class 0 to be much lower thanthe sampling percent for class 1

‎06-26-2023

Hello @HusamAbuOqer ! Perona Malik requires the input DEM to be in the .tif format. While other formats may work with the other smoothing methods, it is highly recommended that .tif files be used as inputs anyway. Please let me know if this resolves your issue. Thanks! -Gina

‎02-14-2023

Glad that cleared things up. I'll automate that extract-by-mask operation in future versions of the tools. Thanks!

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Date Last Visited	‎03-22-2024 08:13 PM

My Ideas

Latest Contributions by GinaO_Neil

Re: Arc Hydro - Wetland Identification Model (Updated March 2024)

New home for Arc Hydro Docs

Re: The Wetland Identification Model (WIM) – A New Arc Hydro Functionality for Predicting Wetland Locations Using LiDAR Elevation Data and Machine Lea

Re: The Wetland Identification Model (WIM) – A New Arc Hydro Functionality for Predicting Wetland Locations Using LiDAR Elevation Data and Machine Lea

Re: Arc Hydro - Wetland Identification Model

Re: Partition hillslopes Tool execution error

Re: Smoothing the DEM

Re: Smoothing the DEM

Re: Smoothing the DEM

Re: Smoothing the DEM

Re: Smoothing the DEM

Re: Smoothing the DEM

Re: Smoothing the DEM

Re: Smoothing the DEM

Re: ArcHydro Wetland Identification Model (WIM) with multi-classed groundtruth data

New home for Arc Hydro Docs

Re: The Wetland Identification Model (WIM) – A New...

Re: Smoothing the DEM

Re: Smoothing the DEM

Re: ArcHydro Wetland Identification Model (WIM) wi...