• Interpolation in the presence of barriers

    For the Spline with Barriers interpolation tool, the enhancements that were made when the tool was implemented in ArcGIS Pro 2.0 are now also available in ArcGIS 10.6. Let’s have a look at the history ...
    slynch-esristaff
    last modified by slynch-esristaff
  • Combine... data classification from raster combinations

    I rarely get a great idea.  This is another one of those cases.  But I do recognize a great idea when I see it.  Sadly I usually forget it, then rediscover it many months or years later.  I spotted...
    Dan_Patterson
    created by Dan_Patterson
  • Terrain creation.... diamond-square algorithm

    Natural terrain is so fickle.  Wouldn't it be nice to have a sink-less terrain so that your flowdirection, flowaccumulation and stream generation would go as nature planned.   If you have a need to test alg...
    Dan_Patterson
    created by Dan_Patterson
  • Why your output raster is larger than your environment extent?

    When using a geoprocessing tool, for example Hillshade, when you specify an extent in the environment settings, you might have noticed sometimes that your output raster is slightly larger than your specified...
    SChatterjee-esristaff
    last modified by SChatterjee-esristaff
  • Predict Floods with Unit Hydrographs

    Check out the new ArcGIS Lesson on Predict Floods with Unit Hydrographs to create a unit hydrograph for a small to medium sized watershed using ArcGIS Pro, using a wide array of tools from Hydrology,...
    SChatterjee-esristaff
    last modified by SChatterjee-esristaff
  • Using interactive features with Spatial Analyst tools

    Have you tried the new Interactive feature input capability in ArcGIS Pro 2.0 yet?  Read on to learn more about how you can perform analysis interactively with some of the Spatial Analyst tools.   ...
    SChatterjee-esristaff
    last modified by SChatterjee-esristaff
  • Spatial Analyst- Post-UC Recap

    It was great to interact with all of you at the User Conference in San Diego. Thank you for sharing your analysis stories, and for your feedback and suggestions. For those of you who could not make it to a particular ...
    SChatterjee-esristaff
    last modified by SChatterjee-esristaff
  • Calculating density on a network: a comparison of Network KDE and Planar KDE

    Check out this Story Map on a spatial data exploratory analysis of vehicle crashes in Richmond City, Virginia that identifies hazardous road segments (hotspots) using both Network Kernel Density Estimation (...
    SChatterjee-esristaff
    last modified by SChatterjee-esristaff
  • How to extract raster values at point locations?

    Many a times, in your analysis, you might need to extract values from rasters based on point locations. The Spatial Analyst extension offers several tools that can do this for you, those being Extract Values to Points...
    WYing-esristaff
    created by WYing-esristaff
  • Are you getting GPU error while executing the Viewshed 2 tool?

    The Viewshed 2 tool is a new visibility analysis tool released in ArcGIS 10.3 and ArcGIS Pro 1.0. The tool takes advantage of a GPU processor by default if one is available on your computer.   As GPU graphics ca...
  • Performing analysis with the Con tool

    ‘Con’, abbreviated for condition, is one of the most used and powerful tools in Spatial Analyst. It allows you to vary how the output is determined based on the value of the input locations, which is key f...
    SChatterjee-esristaff
    last modified by SChatterjee-esristaff
  • Reclassify raster data simply

    Reclassifying raster data can be a bit of a challenge, particularly if there are nodata values in the raster.  This is a simple example of how to perform classifications using a sample array. (background 6,000+ r...
    Dan_Patterson
    created by Dan_Patterson
  • Aggregation of raster data

    The aggravation of aggregation ...                  Raster with some classes           ...
    Dan_Patterson
    created by Dan_Patterson
  • Slope, Aspect and Hillshade... No SA?

    Like is says.   Additions:  2017-12-20 Added the hillshade calculation that was missing from the original. Modified:  2016-12-05 Simplified aspect calculation and added the ability of how to classify ...
    Dan_Patterson
    created by Dan_Patterson
  • Sliding/Moving window operations in rasters and arrays

    Sliding/Moving windows ...   This is the companion to block functions introduced earlier.  I will keep it simple.  The stats functions for rasters with and without nodata values still apply to this typ...
    Dan_Patterson
    created by Dan_Patterson
  • Rasters and arrays:  backgrounder on shapes and dimensions

    Introduction This blog post is for the two other people in the world that might be remotely interested in rasters/arrays and dimensionality as it can be applied to reshaping for subsequent analysis.  The topic w...
    Dan_Patterson
    created by Dan_Patterson
  • Block functions in rasters...

    Block functions in rasters ... Modified Jan 17,2015   The background.. Results... To begin, we will construct a simple array consisting of 36 numbers from 0 and 35. The array is broken down into 3x3 blocks of...
    Dan_Patterson
    created by Dan_Patterson