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OGRCreateCoordinateTransformation() returned NULL: PROJ available? from shinyapps when user runs code in intro-to-spatial-r #5

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andysouth opened this issue Feb 3, 2021 · 0 comments

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andysouth commented Feb 3, 2021 •

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Recurrence of problem in #2

Occurs because of older versions of spatial packages on shinyapps.io

Resetting the crs of objects is solution. But seemingly doing that earlier in the tutorial doesn't persist ???

sf::st_crs(africapitals) <- 4326

#https://stackoverflow.com/questions/61286108/error-in-cpl-transformx-crs-aoi-pipeline-reverse-ogrcreatecoordinatetrans
#If you save an sf-dataframe with a newer version of GDAL, and then try on a system with an older version of GDAL, the projection info cannot be read properly.
#The solution is to re-set the projection:
#st_crs(data) <- 4326

see r-spatial/sf#1419 (comment)

andysouth self-assigned this

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