ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

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Presentation transcript:

ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets Pete Aniello Andrew Leason

What is ArcGIS Data Reviewer? Data quality management for ArcGIS Review Provides Rule based workflows Interactive tools Track errors For individuals and enterprise Saves time/money Less rework Standard extension ArcGIS for Desktop ArcGIS for Server Correct Verify Trusted data through improved quality management ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Thematic Accuracy Tools Pete Aniello ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Geospatial Data Accuracy Spatial (positional, geometric) Spectral (band depth) Thematic (classification) Temporal (appropriate date) Radiometric (capture piece of electromagnetic spectrum) Attributional (types of attributes for intended purpose, correctness of attributes) ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Thematic Accuracy How closely a classification conforms to a reference source (“truth”) No classification is perfect (80 percent is excellent) Products may need to conform to a specification Usually scale-dependent to some degree How to quantify? Error table: Overall Accuracy and Kappa Value ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Thematic Accuracy Tools Part of Spatial Analyst Multivariate Toolbox Same toolbox with classification tools Created with requirements gathered from NGA through the Esri’s CRADA with NGA Quantitative accuracy value for a classified raster ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Accuracy Reporting Error matrix Overall accuracy value Kappa value Standard output for classification accuracy In text report In table for use in GP model Overall accuracy value Kappa value Overall accuracy minus random chance ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Thematic Accuracy Assessment Demo Thematic Accuracy Assessment ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Elevation QA tools Andrew Leason ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Elevation QA tools Developed for internal use Background Developed for internal use Community portion of World Elevation Service Developed as GeoProcessing tools Results can be written directly to Data Reviewer tables Allows for centralized management and reporting Currently in beta version ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Elevation QA tools Slope tool No Data check Check for slopes in elevation raster that are greater than a user specified value No Data check Find areas of NoData pixels Optionally find NoData pixels around the perimeter of the imagery ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Elevation QA tools Reference DEM Mosaic Dataset Overlaps Compare DEM against a reference DEM Mosaic Dataset Overlaps Compare values in all overlapping DEMs within a single mosaic dataset ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Elevation QA tools Water Bodies Rivers Check for flatness Check for displacements at water edge Rivers Check for monotonicity ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Check Slope tool Andrew Leason Demo ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Resources Product page Resource Center Training Questions & comments www.esri.com/datareviewer Resource Center http://resources.arcgis.com/ Training www.esri.com/training Questions & comments datareviewer@esri.com Questions? ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

Thank you… Please fill out the session survey: First Offering ID: 1550 Online – www.esri.com/ucsessionsurveys ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets

ArcGIS Data Reviewer: Plans for Quality Assessment of Raster Datasets