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GIS Library Contents - Metadata

Pictometry Project Base Grid

Layer Thumbnail Map

This metadata information is subject to our disclaimer. Metadata information presented here is maintained manually. Therefore, date-sensitive fields such as feature count and date of last update may not be up-to-date. All metadata is subject to errors inherent in a manual process.


Descriptive namePictometry Project Base Grid
File namept_grid
Spatial domainPima County
Abstractpt_grid shows the complete Pictometry project grid for Pima County and 10 miles beyond. This grid was introduced with the 2020 Pictometry project and serves the same basic function as the Pictometry Sector Grid (ptnsects) does for Pima County Pictometry projects up through 2018.

pt_grid shows the entire possible grid and does not represent the area covered by any particular Pictometry project.

While the pt_grid tiles are approximately 1/4 square mile, they are not PLSS quarter-sections and are not coincident with PLSS section boundaries.
Known errors/qualificationsThe provided TILELABEL field uses only the 5 leading characters of the X coordinate. PCLABELZ is the preferred label (or ID) field for Pima County's use as the value's true coordinates and are left padded with 0's so the field values are all the same length. Use TILELABEL field values when working with Eagleview.
Feature typepolygon
Feature count 56,459
Thumbnail Map pt_grid.pdf PDF file format   (1,383,643 bytes, PDF created 07/20/2022 )
ProjectionNAD83 HPGN (Parameters)
Rectificationunknown
Field/value metadata Field metadata
Source organizationEagleview (Pictometry)
Source contactAmanda Bullen
Source document or file nameAZ_Pima_County_Buffered10Mi_Fishnet
Source date20190731
Source scale
Source formatShape
Second source namePC ITD GIS
Second source contactJohn Dickinson
Second source document or file name
Second source date20200128
Second source scale
Second source formatShape
Date of last data update
(This date may not be current.)
20200128
Last data update byJohn Dickinson
Date/time last touched - Meaning? 2021-02-08  11:25 PM - Enterprise GDB
  2021-02-08  10:53 PM - Shapefile - Library input format
  See coverage files, if any, for date.
LineageThe grid was generated by Eagleview as a "fishnet" and received as AZ_Pima_County_Buffered10Mi_Fishnet.shp.

Pima County GIS calculated new TILEXNUM, TILEYNUM, PCLABEL and PCLABELZ from the provided TILEXCOORD and TILEYCOORD fields in order to have numeric tile coordinate values and labels that use all significant digits of the coordinates. This differs from the the provided TILELABEL field that uses only the 5 leading characters of the X coordinate. PCLABELZ is the preferred label (or ID) field for Pima County's use as the values are left padded with 0's so the field values are all the same length.
On maintenance?No
Maintenance organizationPC ITD GIS
Maintenance description
Original conversion byJohn Dickinson
Pima County ITD GIS contactJohn Dickinson
Alternate Pima County ITD GIS contacte-mail address
On  Pima County Geospatial Data Portal? No

See Metadata Field Descriptions.
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