In This Program

Overview Data Exchange Agreements Data Exchange Production TRIM Exchange Program DEA Bulletins GISI Bulletins Data Exchange Request Process Flowchart Qualified TRIM Contractors List (Revised 05/02/07) Comments Form

Overview

"Data Exchange" means the negotiated transfer of data between organizations or agencies.

The Branch recognizes that the exchange of data with other agencies is an expedient source of new and updated information. To provide current data in a cost effective and timely manner, the Branch supports integrating and/or supplementing original TRIM baseline information with data from sources other than 1:70 000 scale aerial photography. Alternate sources include but not limited to satellite imagery, GPS and current, importable baseline data resident in other agencies.

The Branch pursues data exchange opportunities and has established the TRIM Data Exchange Program and the criteria for Branch acceptance of data from external sources.

The currency of Branch information is as important an element as data content, accuracy or consistency. In some cases, data currency is the most critical requirement. The TRIM Data Exchange Program will provide users with current and accurate data by the most efficient, economical and effective means possible.

The Branch will be the recognized custodian of the data comprising Base Mapping and as such is responsible for the continuing integrity of this information. This data will be carefully evaluated and given an accuracy-based confidence level, rated from 1 to 4 (i.e. level 1 - Meets or surpasses TRIM specifications and is fully integrated into the data set with descriptive Metadata; and level 4 - Unknown source and doesn't meet the TRIM specifications). This confidence level and other descriptive metadata will be associated to features as attributions in the SAIF files.

TRIM will move forwards in the ability to carry data attributes in response to client needs.

Crown Registry and Geographic Base Branch

With reduced redundancy in data collection and retention with maximized compatibility with provincial, national and international data standards other initiatives continue to promote cooperative acceptance of Branch or other recognized standards for data accuracy and data format to facilitate inter-agency data exchange.

A commitment to cost reduction achieved by investigating, and, where appropriate, incorporating technology, methodology and implementation innovations to meet evolving Branch requirements. Developing the most cost-effective combination of resource allocation, technology and process in implementing data exchange the Branch remains committed to the completion and maintenance of an information base of established accuracy, currency, credibility, and reliability.

Data Exchange Agreements

See the following lists of partners with signed agreements:

Data Exchange Model Agreement (.pdf) >> Data Exchange Prince George >> Data Exchange Prince Rupert >> Data Exchange Nelson >> Data Exchange Cariboo >> Data Exchange Vancouver >> Data Exchange Kamloops >> Data Exchange - Other >>

To view .pdf files download the latest version of Adobe Reader getacro.gif (712 bytes)

Data Exchange Production

A Data Exchange production map is available here clicking on any title or area within this map will take you to a more detailed map of that region.

TRIM Exchange Program

CRGB Exchanged Data Requirements (.pdf) >>

Confidence Reasons (.pdf) >>

Exchange Specifications

IGDS Exchange Specifications (.pdf) >> (Revised December 10, 2003)

DEA Spreadsheet Example (.pdf) >> (New January 15, 2001)

Schema (.pdf) >>

Shape Exchange Specifications (.pdf) >> (Revised October 30, 2003)

FME Translators

FME control files to extract TRIMX SAIF files to E00, works with FME, FMEtm.
FME Translators (.zip) >>

For further information regarding translators contact: 
Paul Quackenbush (250) 387-9338
Email: Paul.Quackenbush@gov.bc.ca

DEA Bulletins

New Features Added to TRIM >> New Exchange Features Added to TRIM
March 2005 (.pdf) >> 		DEA Data Editing (.pdf) >> Special Notes (.pdf) >>

ArcView Scripts / Buttons

change_ver.ave" is a "view" utility to help change Version numbers of exchange data that is being incorporated into TRIM.

After connecting the script to a "View" button, query for the most current version numbers of the data and note the latest number. Query for all the new exchange data, except for the retired elements and select the new elements you wish to change. Click to button and follow the prompts.

GISI Bulletins

New Features Added to TRIM >>
GISI Attribution (.pdf) >>

GIS Innovations Data

  • The decision was to consider GISI Roads as field verified.  Therefore the Attribution from the GISI road is to be considered the most reliable source for the current attribution.
  • Any change in GISI is to  be considered as a replacement of TRIM.
    -mark original TRIM as Deletion with replacement, duplicate the
    line and change attribution. It is automatically date stamped.
  • GISI Data is to be delivered rounded to the nearest metre.

QA Requirements

  • Translation Reports: in and out and feature lists
  • Geometry: 3D noding xy and z
                   xy noding between features
  • Attributions: metre resolution
    Addition - New
    Modified Addition - Changed
    Deletion With Replacement - changed
    Deletion - not used in this project because of attribution

GISI Data Decisions

Sometimes decisions are required when integrating GISI Data into TRIM. 

Example #1 GISI TRIM (.pdf) >>
Example #2 GISI Bridges (.pdf) >>

Data Exchange Request Process Flowchart

A flowchart outlining the Data Exchange Request Procedure is available in .pdf format. Data Exchange Request Process Flowchart (.pdf) >>

Qualified TRIM Contractors List (Revised 05/02/07)

A list of Qualified TRIM contractors as of 05/02/07 is available here in .pdf format.

Comments Form

Please us our comments form to give us your feedback on the Data Exchange Program.