temporary_grid_search {AirExposure} | R Documentation |
Temporary grid search
Description
The aim is to search for the grid with the name obtained in the function time_grid in the local path entered. If only one hour is entered, it returns the grid in shapefile format saved in the local directory. In the case of a range of hours, an average grid of the time range is returned.
Usage
temporary_grid_search(start_hour, end_hour = NULL, dir, time_format, gridID, shapeValue)
Arguments
start_hour |
String vector that represents the date and time of interest to estimate the exposure, indicating the start time of the activity and/or the trip. |
end_hour |
String vector that represents the date and time of interest to estimate the exposure, indicating the end of the activity and/or the trip. If you want to obtain a specific time interval that denotes the duration of an activity and/or trip of the same day, you need to provide this parameter. If not, it defaults to NULL. |
dir |
String vector with the path to the local directory where the shapefiles that have the information about the concentrations of the pollutants of interest are located. |
time_format |
String vector representing the structure using special strptime abbreviations, indicating how the date data was provided (e.g. |
gridID |
String vector with the name of the field containing the unique identifier (ID) for the grid. The ID is a unique number assigned to each pixel within the concentration grid in the shapefile (e.g. GRI1_ID) |
shapeValue |
String vector with the name of the field corresponding to the concentrations in the shapefile files (e.g. value) |
Details
The aim is to search for the grid with the name obtained in the function time_grid in the local path entered. If only one hour is entered, it returns the grid in shapefile format saved in the local directory. In the case of a range of hours, an average grid of the time range is returned.
Value
This function is used internally in the model of dynamic and fixed variables. The output is the reading of the grid in local path, where a file of class "sf" and "data.frame" is read.
Author(s)
Josefina Urquiza, Maria Florencia Tames, Maela Lupo, Alfredo Rigalli
Maintainer: Josefina Urquiza <jurquiza@conicet.gov.ar>