Retrieves prism metadata from the specified prism data. "prism data", i.e.,
pd are the folder names returned by prism_archive_ls() or
prism_archive_subset(). These functions get the name or date from these
data, or convert these data to a file name. A warning is provided if the
specified prism data do not exist in the archive.
pd_get_md(pd)data.frame containing metadata for all specified prism data.
prism data character vector.
The metadata includes the following variables from the .info.txt file for daily, monthly, and annual data:
PRISM_DATASET_FILENAME
PRISM_DATASET_CREATE_DATE
PRISM_DATASET_TYPE
PRISM_DATASET_VERSION
PRISM_CODE_VERSION
PRISM_DATASET_REMARKS
Additionally, two local variables are added identifying where the file is located on the local system:
file_path
folder_path
The annual and monthly normals data includes different keys in the .info.txt, so they are renamed to be the same as those found in the other temporal data. The keys/variables are renamed as follows:
PRISM_FILENAME --> PRISM_DATASET_FILENAME
PRISM_CREATE_DATE --> PRISM_DATASET_CREATE_DATE
PRISM_DATASET --> PRISM_DATASET_TYPE
PRISM_VERSION --> PRISM_CODE_VERSION
PRISM_REMARKS --> PRISM_DATASET_REMARKS
Additionally, the normals does not include PRISM_DATASET_VERSION, so that
variable is added with NA values.