Latest Contributions by SarmisthaChatterjee

Many new and improved capabilities are available to the   Spatial Analyst extension   in ArcGIS Pro 2.7.  At the top of the list are two brand new capabilities, the   Storage Capacity tool in the hydrology toolset and the   Surface Parameters   tool in the surface toolset. In addition, new capabilities and performance improvements are available across a broad range of analytical areas. Where do I get it? ArcGIS Pro 2.7 was released on December 16, 2020. Download from here To see a complete summary of all the changes that have been made for this release, have a look at   What’s New for ArcGIS Pro 2.7. This release also sees the introduction of a version switcher in the web help content.  In any topic, click on the   Other versions   drop-down to see the help content for the previous release. 1. Density analysis The   Kernel Density   tool now supports the ability to use the geodesic method to calculate the density with a barrier feature. This creates better results for point features over a large extent. In the previous release, barriers were only supported for the planar distance method. The   Kernel Density   raster function now supports the ability to specify a barrier input. 2. Distance analysis A new parameter was added to the   Optimal Path As Line   tool. This option allows you to choose to create overlapping paths, or to now produce non-overlapping paths that can be used for networking. Performance has been improved for the planar distance method for the   Distance Accumulation,   Distance Allocation, and   Optimal Region Connections   tools as well as the   Distance Accumulation   and   Distance Allocation   raster functions. The performance has also been improved for the   Least Cost Path   raster function. 3. Generalization analysis The   Boundary Clean   tool now supports parallel processing for improved performance on larger datasets. This ability to smooth the boundaries between zones in raster data is now also available as the new   Boundary Clean   raster function. 4. Hydrology analysis The new   Storage Capacity   tool creates a table and optional chart of elevations and corresponding storage capacities for an input surface raster based on a zone input. It calculates the surface area and total volume of the underlying region at a series of elevation increments.    Storage Capacity tool elevation volume curve example 5. Overlay analysis The   Locate Regions   tool has significantly improved performance compared to previous releases. This tool is a useful part of a suitability workflow to identify the best regions that meet specified size requirements and spatial constraints. 6. Segmentation and classification analysis The   Export Training Data For Deep Learning   tool has two new options available for the format of output metadata tables, Multi-labeled Tiles and Export Tiles. 7. Surface analysis Some significant new capabilities for surface analysis are available to Spatial Analyst in ArcGIS Pro 2.7. The new   Surface Parameters   tool determines various parameters of a raster surface such as aspect, slope and several types of curvature. These parameters are calculated on a cell-by-cell basis, by fitting a local quadratic or biquadratic surface around each target cell. You can define a specific neighborhood size to use for the calculations, or to have the tool to allow the neighborhood size to vary with local landscape changes.  Illustration of adaptive neighborhood sizes based on local landscapes. There are two additional tools now available for surface analysis. Use the   Add Surface Information   tool to add various surface elevation properties to the attribute table of a feature class. Use the   Interpolate Shape   tool to convert 2D point, polyline or polygon feature class into a 3D feature class by interpolating z-values from a surface. 8. Zonal analysis For zonal statistics analysis, it is now possible to calculate median and percentile statistics for floating point input rasters.  For the percentile type, a new parameter is available that specifies the method of percentile interpolation to be used when the number of values from the input raster to be calculated are even.  Also supported now is multidimensional processing for inputs with different dimensions. These changes are available for the   Zonal Statistics   and   Zonal Statistics as Table   tools and the   Zonal Statistics   raster function. 9.  ArcPy functions & Geoprocessing functions Following is the list of updates made in the   Spatial Analyst module. ArcPy functions The following new ArcPy functions are available in the arcpy.sa module in this release, listed by category: Band Indices—BAI,   NBR,   NDBI,   NDMI, and   NDSI Classification—Classify,   LinearUnmixing,   RegionGrow, and   SegMeanShift Conversion—RasterizeFeatures Reclass—ZonalRemap A Spatial Analyst license is required to use the entries in the Classification category. The entries in the Band Indices, Conversion and Reclass categories do not require any extension license.   Geoprocessing functions in Pro 2.7 The following new geoprocessing functions are available in the arcpy.sa module, listed by toolset: Hydrology—StorageCapacity Surface—AddSurfaceInformation,   InterpolateShape, and   SurfaceParameters Spatial Analyst resources Refer back to the   Spatial Analyst resources   blog to keep tabs on current developments and to find links to useful and interesting content.  Here are some recent posts that you might find interesting: The new Suitability Modeler: Changing the way suitability models are created Reclassify Raster Data in ArcGIS Pro Spatial Analyst Extension Summary 2020 has been different for all of us, to say the least, but working from home has not stood in the way of the Spatial Analyst team making new and improved capabilities available to you! Check out the new ArcGIS Pro 2.7 (December 2020) release and try out the new capabilities. Share your views, analysis stories, suggestions, and feedback with us on the   ArcGIS Spatial Analyst Geonet   page. ... View more

Suitability modeling is one of the most common applications for a GIS analyst. It can be used to determine the best location to build a shopping center, housing development, or ski resort. You can also use it to find the best areas for parks, endangered wildlife habitat, or flood control. Suitability modeling is one of the first applications you are taught when learning GIS. It is the application that made you fall in love with GIS. Traditionally, creating a suitability model is a linear process. You needed to understand the steps in the workflow in which you independently specify the parameters for each criterion with little knowledge of their effect on the output. You had to trust the process when creating the output. The new   Suitability Modeler   is an interactive, exploratory environment for creating and evaluating a suitability model. It is available now for ArcGIS Pro 2.6 with a Spatial Analyst extension license. The basic premise underlying the Suitability Modeler is that a model is a dynamic process. Constructing a suitability model is a nonlinear, iterative process. At each step of the workflow, analytical feedback is provided through interacting maps, plots, and panes. This allows you to make informed decisions on the parameters you specify and easily see how they will affect the final output. The Modeler allows seamless back and forth movement between each stage of the model development. What you learn in one stage of the process may influence the decisions you make in another. Because of the exploratory and interactive nature of the Suitability Modeler, you can justify each step of your modeling process. As a result, you will be more confident in the model output leading to better decisions. The best way to understand the Suitability Modeler is to see it in action. The following video was presented at the Plenary of the 2020 Esri User Conference. To learn more about the Suitability Modeler, see   What is the Suitability Modeler? To understand the general steps of a suitability model, see   The general suitability modeling workflow. The content of the blog The new Suitability Modeler: Changing the way suitability models are created is written by Kevin Johnston. Kevin has been a Product Engineer on the Spatial Analyst development team for over 29 years. He has degrees in Landscape Architect from Harvard and in environmental modeling from Yale. At Esri, Kevin’s current focus is developing suitability and connectivity tools. He hopes the tools that he works on can help users make more informed decisions. ... View more

We are excited to share with you some of the important improvements that we did in the Zonal toolset for ArcGIS Pro 2.6 and ArcGIS Image Server 10.8.1 to make your workflows more intuitive and powerful. We have significantly improved and enhanced the geoprocessing tools, the corresponding raster functions, the ArcGIS API for Python and the ArcGIS REST API. New enhancement in zonal functionalities now included new capabilities, options, and ways of accessing the tools. Read on to learn more about it. Process overlapping polygon zones The   Tabulate Area   tool in ArcGIS Pro 2.6 Spatial Analyst extension now process overlapping zones and calculates area for each individual feature. Calculate percentile The zonal statistics tools and the function have an additional statistics type, percentile, to compute extreme events. Using the   Zonal Statistics as Table   tool, you can also calculate multiple percentile values at one go, as shown below:   This capability can be accessed from: ArcGIS Pro 2.6 Spatial Analyst and Image Analyst extensions: - Zonal Statistics as geoprocessing tool and function - Zonal Statistics as Table as geoprocessing tool ArcGIS Image Server 10.8.1: - Summarize Raster Within as Map Viewer tool, Portal tool in ArcGIS Pro, ArcGIS API for Python and ArcGIS REST API - Zonal Statistics as Map Viewer function and ArcGIS API for Python - Zonal Statistics As Table as Portal tool in ArcGIS Pro and ArcGIS REST API Process multidimensional zone and value rasters The zonal statistics tools and function can now process both multidimensional zone and value rasters. This capability is enabled by checking the parameter   Process as multidimensional , as shown in the example below. These tools are also available from the Multidimensional ribbon, which was introduced in ArcGIS Pro 2.5. The zonal operation occurs slice-by-slice between the slices of the zone raster and the slices of the current variable from the value raster. See   How the zonal statistics tools work   to learn more about the multidimensional processing in these tools. Multidimensional zone and value input rasters with the resulting zonal statistics raster are shown. This capability can be accessed from: ArcGIS Pro 2.6 Spatial Analyst and Image Analyst extensions: - Zonal Statistics as geoprocessing tool and function - Zonal Statistics as Table as geoprocessing tool ArcGIS Image Server 10.8.1: - Summarize Raster Within as Map Viewer tool, Portal tool in ArcGIS Pro, ArcGIS API for Python and ArcGIS REST API - Zonal Statistics as Map Viewer function and ArcGIS API for Python - Zonal Statistics As Table as Portal tool in ArcGIS Pro and ArcGIS REST API See what else is new with multidimensional raster analysis from this blog post:   Let’s do data science III: Multidimensional Raster Analysis in ArcGIS Pro New output table schema A new table output schema is available for the Tabulate Area and Zonal Histogram tools with ArcGIS Pro 2.6 Spatial Analyst extension, which facilitates further query and analysis on the output tables. In the Tabulate Area tool, you can now choose between representing the input classes as rows or as fields in the output table with the Classes as rows in output table parameter. Similarly, to improve analysis workflows, in the Zonal Histogram tool, you can represent the input zones either as rows or as fields, using the new Zones as rows in output table parameter. Create histogram  The   Zonal Histogram   tool in ArcGIS Pro 2.6 Spatial Analyst extension can now create histogram graphs. Just note that the zonal histogram graph is not generated by default. In order to create the graph, first check the   Zones as rows in output table   parameter and specify an output graph name. Also, do not forget to check out the   What’s New for Spatial Analyst in ArcGIS Pro 2.6   to know about everything that is new with the Spatial Analyst tools. What else is new in ArcGIS Image Server? The Zonal Statistics As Table tool is now available in ArcGIS Image Server as a   Raster Analysis   portal tool and as an   ArcGIS REST API   task to calculate the values of a raster within the zones of another dataset and report the results to a table. To learn more about what’s changed in ArcGIS 10.8.1, see   What’s new in ArcGIS Image Server. ... View more

The   2020 Esri User Conference   (July 13-16) is almost here, and we are going virtual! So, if you haven’t already, register to join the world’s largest, virtual GIS conference and be able to access the plenary, technical sessions, and many other presentations. We here on the   Spatial Analyst   team are excited to show you what we’ve been working on since last summer.  If you do any kind of raster or imagery analysis, or work with multidimensional data, look at the guide below to plan out your time with us. Streaming Live Plenary Session Join us for three inspiring days of thought-provoking Plenary Session content. Don’t miss out on the brand-new   Interactive Suitability Modeler , which will be covered in the Monday, July 13, 10:00 am – 12:00 pm PDT timeslot. Streaming Live Technical Sessions Take advantage of this unique learning experiences and check out the following technical workshops with live Q&A: Distance Analysis: Identifying Optimal Paths Using Rasters Tuesday, July 14, 7:30 am – 8:30 am PDT Prediction, Trend, and Change Analysis of Multidimensional Raster Data Tuesday, July 14, 1:40 pm – 2:40 pm PDT Spatial Analysis and Data Science: Q&A with the Product Team Wednesday, July 15, 2:50 pm – 3:50 pm PDT You can find out more about these and all other sessions from the full   schedule. You can also filter the schedule based on your interest or level to find out the sessions you would like to attend. If you are interested in sessions related to   Spatial Analysis and Data Science, don’t forget to check out this   blog. On-Demand Sessions The following   on-demand sessions   can be accessed starting on July 13 th   for all registered attendees. You can view the recordings at your convenience. Spatial Analyst: An Introduction (ID 11020) – Technical Workshop The New Interactive Suitability Modeler (ID 11053) – Demo Finding the Best Locations Using Suitability Modeling (ID 11023) – Technical Workshop Doing More with the New and Improved Distance Tools in Spatial Analyst (ID 11039) – Demo Interpolating Surfaces in ArcGIS (ID 11027) – Technical Workshop Hydrological Analysis Tools in ArcGIS (ID 11032) – Technical Workshop GIS Techniques for Floodplain Delineation (ID 11050) – Demo Working with Multidimensional Data in ArcGIS (ID 11036) – Technical Workshop ArcGIS Image Server: Raster Analytics (ID 10393) – Technical Workshop ArcPy: Working with Raster Data (ID 11192) – Technical Workshop Custom Analysis Using Raster Cell Iterator in ArcPy (ID 11041) – Demo As you are attending the sessions, make sure to give us your feedback, so that we can improve them for the next round. We would also like to hear from you while you are attending the conference, so visit us virtually at the   Esri UC 2020 expo in the Spatial Analysis and Data Science showcase   to learn more about the ongoing projects, or if you have questions. You can also follow our   Spatial Analyst Resources blog   page to get updates throughout the year. Download the Spatial Analyst UC 2020 Workshops and Demos   List. Enjoy the conference! ... View more