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fetch all the photo info initially vs just black and white film for s…
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…pecific tiemline and switch out screenshot from WIMSI
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NewGraphEnvironment committed Nov 17, 2024
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2,347 changes: 2,346 additions & 1 deletion posts/2024-11-15-bcdata-ortho-historic/data/airphotos.93L08.csv

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2,102 changes: 2,101 additions & 1 deletion posts/2024-11-15-bcdata-ortho-historic/data/airphotos.93L09.csv

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9 changes: 5 additions & 4 deletions posts/2024-11-15-bcdata-ortho-historic/index.qmd
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title: "Getting details of historic orthophoto imagery with R"
author: "al"
date: "2024-11-15"
date-modified: "2024-11-16"
date-modified: "2024-11-17"
categories: [fwapg, r, bcdata]
image: "image.jpg"
params:
Expand Down Expand Up @@ -299,8 +299,8 @@ It does however seem that if we go through the online interface, we can use a NT

Next, we go into the provincial [WIMSI](https://www2.gov.bc.ca/gov/content/data/geographic-data-services/digital-imagery/air-photos) service and for each NTS 1:50,000 grid - we state the date range we would like to search and export. Thinking we may be able to hit the API directly with a query in the future which would eliminate the painful point and click portion of this workflow. For now though - we are doing this piece manually and chose the following options:

- `Years from`: 1963 to 1980
- `Media`: Black and White - Film
- `Years from`: 1950 to 2024
- `Media`: All
- `Only show georeferenced images`: - No

Running these options exports a csv for each query. We saved them in this repo with their original sane names `airphotos.{mapsheet}.csv`.
Expand Down Expand Up @@ -557,5 +557,6 @@ We are absolutely privaledged to potentially have the assistance of Mike Price t

## Outstanding Issues

Why does the date range of the photos we can get IDs for through the [WIMSI](https://www2.gov.bc.ca/gov/content/data/geographic-data-services/digital-imagery/air-photos) online portal not overlap the dates listed in the BC Data Catalouge [Historic Imagery Points](https://catalogue.data.gov.bc.ca/dataset/airborne-imagery-historical-index-map-points) for the dates in the Historic Imagery Points that are listed as 1950 - 1963 vs our earliest records from the portal at `r min(photos_aoi_refined$photo_date)`??!!
- Why does the date range of the photos we can get IDs for through the [WIMSI](https://www2.gov.bc.ca/gov/content/data/geographic-data-services/digital-imagery/air-photos) online portal not overlap the dates listed in the BC Data Catalouge [Historic Imagery Points](https://catalogue.data.gov.bc.ca/dataset/airborne-imagery-historical-index-map-points) for the dates in the Historic Imagery Points that are listed as 1950 - 1963 vs our earliest records from the portal at `r min(photos_aoi_refined$photo_date)`??!!
- Is it crazy to export all mapsheets for the area and add Buck Creek to our study area (easy enough to do) or is this a reasonable start and good enough for a start?

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