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LARIAC1 Error Reporting

Last updated: 11/6/2007

Some Errors with DEM Tiles

DRP identified 63 DEM tiles (GRID format) with errors within some project areas and 172 partially covered DEM tiles along the boundaries between Project Areas 1 and 2 that had some issues. Remember that each DEM tile was not QCd by our vendor. The DTM was checked and the DEM is a derivative productsomewhere in that process is where the errors must have been created. Please contact the Department of Regional Planning if you have any questions

  • Click here to see a list of files affected (PDF)
  • Click here for a description of how to fix the error (PDF)

Problem Identification and Resolution Form (PIRF)

As LAR-IAC members have a chance to begin to look over recent deliveries, it is expected that questions will arise regarding potential data errors. With such a tremendous volume of data, it is quite possible that such instances will be found. While a large portion of the data went through the independent QA/QC process, the possibility that some errors passed through is feasible. Moreover, some errors may be found in those areas that were outside of the independent QA/QC.

All errors should be sent to the Department of Regional Planning (DRP) using the Problem Identification and Resolution Form (PIRF) which can be downloaded at the link below. It is preferable that you include a shapefile outlining the error along with the PIRF form (point, line or polygon, depending on the extent of the error). DRP will collect the errors and evaluate whether they fall within the specifications outlined in the contract. Errors will then be sent on to the contractor for resolution. Any corrected tiles will be placed on the DRP’s FTP site for downloading or put on DVD/CD media for the affected cities/agencies.


Download PIRF form (Word Document)

PIRF Status


# Received From Status Problem
LARIAC_PIRF_01 2/5/2007 Santa Monica Resolved Coloration
LARIAC_PIRF_02 2/7/2007 Manhattan Beach Resolved Missing data / Coloration
LARIAC_PIRF_03 2/7/2007 Cerritos Resolved Missing Data
LARIAC_PIRF_04 2/5/2007 Santa Monica Resolved Missing Data
LARIAC_PIRF_05 2/14/2007 Santa Monica Resolved Coloration
LARIAC_PIRF_06 2/14/2007 Cerritos Resolved Coloration
LARIAC_PIRF_07 2/27/2007 Pasadena Resolved Mosaicking
LARIAC_PIRF_08 2/28/2007 Burbank Resolved Improper rotation
LARIAC_PIRF_09 3/5/2007 Covina Resolved Bad Pictometry images
LARIAC_PIRF_10 3/8/2007 Pasadena Resolved Seamline in imagery
3/19/2007 Lakewood Responded Color Balancing
LARIAC_PIRF_12a 3/28/2007 Culver City Resolved Coloration
LARIAC_PIRF_12b 4/17/2007 Culver City Resolved Coloration / Haziness
LARIAC_PIRF_12c 4/17/2007 Culver City Resolved Coloration / Haziness
LARIAC_PIRF_13 4/5/2007 Lakewood Responded Color Balancing
LARIAC_PIRF_14 4/10/2007 Carson Responded Missing data
LARIAC_PIRF_15 4/23/2007 Redondo Beach Resolved Missing data
LARIAC_PIRF_16 5/2/2007 Manhattan Beach Responded Data display problems
LARIAC_PIRF_17 5/14/2007 Santa Clarita Resolved Incomplete tile
LARIAC_PIRF_18 5/21/2007 Santa Clarita Resolved Incomplete tile
LARIAC_PIRF_19 9/27/2007 Pasadena Resolved Edgematching