positional accuracy assessment
DESCRIPTION
Positional Accuracy Assessment. Pete Aniello. What is ArcGIS Data Reviewer?. Data quality management for ArcGIS. Trusted data through improved quality management. Review. Provides Rule based workflows Interactive tools Track errors For individuals and enterprise Saves time/money - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/1.jpg)
Positional Accuracy AssessmentPete Aniello
![Page 2: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/2.jpg)
What is ArcGIS Data Reviewer?
• 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
Data quality management for ArcGIS
Trusted data through improved quality management
ReviewReview
CorrectCorrectVerifyVerify
![Page 3: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/3.jpg)
• 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)
Geospatial Data Accuracy
![Page 4: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/4.jpg)
• Data needs to be in the “right” place for intended purpose (fitness for use)
• All else being equal, less accurate is less valuable
• Products usually need to conform to a specification
• Usually scale-dependent to some degree
• How to quantify?
• CE, LE, RMSE
Positional Accuracy
![Page 5: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/5.jpg)
• Part of GIS Data Reviewer
• Created with requirements
gathered from NGA through the
Esri’s CRADA with NGA
• Determine accuracy of imagery,
rasters, vectors
• Quantitative value
Positional Accuracy Assessment Tool (PAAT)
![Page 6: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/6.jpg)
• NGA standard or USGS standard
• CE 90, 95, 99
• LE 90, 95, 99 (for DEMs or TINs)
• RMSE
• Absolute or relative
Accuracy Reporting
![Page 7: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/7.jpg)
• Text report
• Metadata
- Xml format
- ISO
- PMAA (NGA)
• Accuracy attribute (if assessing
vectors)
• Shapefile of point reading locations
PAAT Outputs
![Page 8: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/8.jpg)
Positional Accuracy Assessment
Demo
![Page 9: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/9.jpg)
Resources
• Product page- www.esri.com/datareviewer
• Resource Center- http://resources.arcgis.com/
• Training- www.esri.com/training
• Questions & comments- [email protected]
• Questions?
![Page 10: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/10.jpg)
Thank you…
• Please fill out the session survey:
Offering ID: 1855
Online – www.esri.com/ucsessionsurveys
Paper – pick up and put in drop box
![Page 11: Positional Accuracy Assessment](https://reader035.vdocuments.site/reader035/viewer/2022062518/5681463a550346895db34750/html5/thumbnails/11.jpg)