rasterframes | Geospatial Raster support for Spark DataFrames
kandi X-RAY | rasterframes Summary
kandi X-RAY | rasterframes Summary
RasterFrames brings together Earth-observation (EO) data access, cloud computing, and DataFrame-based data science. The recent explosion of EO data from public and private satellite operators presents both a huge opportunity as well as a challenge to the data analysis community. It is Big Data in the truest sense, and its footprint is rapidly getting bigger. RasterFrames provides a DataFrame-centric view over arbitrary raster data, enabling spatiotemporal queries, map algebra raster operations, and compatibility with the ecosystem of Spark ML algorithms. By using DataFrames as the core cognitive and compute data model, it is able to deliver these features in a form that is both accessible to general analysts and scalable along with the rapidly growing data footprint. Please see the Getting Started section of the Users' Manual to start using RasterFrames.
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QUESTION
Is there a way to extract/query latitude, longitude and elevation data from a tif file using RasterFrames (http://rasterframes.io/)?
Following the documentation, I did loadRF a tif file from the following site: https://visibleearth.nasa.gov/view.php?id=73934, however all I can see is generic information and don't know which RasterFunction to use in order to extract position and elevation or any other relevant information. I did try everything I can find in the API.
I did also try to extract temperature information using the following source as well: http://worldclim.org/version2
All I get is tile column with DoubleUserDefinedNoDataArrayTile and boundary (extend or crs).
RasterStack in R can extract this information according to this blog: https://www.benjaminbell.co.uk/2018/01/extracting-data-and-making-climate-maps.html
I need a more granular DataFrame such as lat,lon,temperature(or whatever data is embedded into the tif file).
Is this possible with RasterFrames or GeoTrellis?
...ANSWER
Answered 2019-Aug-02 at 13:04The long story short - yes, it is possible (at least with GeoTrellis). It is also possible with RasterFrames, I suppose, but will require some time to figure out how to extract this data. I can't answer more detailed since I need to know more about the dataset and about the pipeline you want to perform and apply.
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