finding-data.Rmd
Many packages focus on the access to raster, vector, and tabular data,
providing constant updates and improvements. For this reason,
masDMT does not offer additional data access tools.
Instead, it helps users locate relevant data. list_data()
uses
unique data identifiers as displayed in the MAS data catalog to find
and report metadata on the relevant data files, including their format
and location. As shown below, we can construct a data call in different
levels of complexity, from a generic dataset request to a combination of
dataset, subdataset, and spatial resolution.
# find all files for dataset "CCI_landCover"
list_data('CCI_landCover')
# find all files for subdataset "landCover" of dataset "CCI_landCover"
list_data('CCI_landCover/landCover')
# find all files subdataset "landCover" of dataset "CCI_landCover" with a resolution of "300m"
list_data('CCI_landCover/landCover/300m')
Calling list_data() without specifying a dataset call will
return a data.frame listing all registered datasets. It is a useful tool
to consult the complexity of the available data, helping us refine our
search query.
| dataset | subdataset | resolution | path | format | start | end | modified |
|---|---|---|---|---|---|---|---|
| CCI_landCover | landCover | 300m | CCI_landCover/CCI_landCover-landCover_20010000_300m.tif | tif | 2001-12-31 | 2001-12-31 | 2020-09-10 13:44:53 |
| CCI_landCover | landCover | 1km | CCI_landCover/CCI_landCover-landCover_200200000_1km.tif | tif | 2002-12-31 | 2002-12-31 | 2020-09-10 13:45:12 |