get_mod_dirs

Accessory function to get the full list of directories on the
lpdaac http site containing data included in the time range selected for
processing (modified after Barry Rowlingson function):

Allows automating the creation of time series of rasters derived
from MODIS satellite land products data. It performs several typical
preprocessing steps such as download, mosaicking, reprojecting and resizing
data acquired on a specified time period. All processing parameters
can be set using a user-friendly GUI. Users can select which layers of
the original MODIS HDF files they want to process, which additional
quality indicators should be extracted from aggregated MODIS quality
assurance layers and, in the case of surface reflectance products,
which spectral indexes should be computed from the original reflectance
bands. For each output layer, outputs are saved as single-band raster
files corresponding to each available acquisition date. Virtual files
allowing access to the entire time series as a single file are also created.
Command-line execution exploiting a previously saved processing options
file is also possible, allowing users to automatically update time series
related to a MODIS product whenever a new image is available.
For additional documentation refer to the following article:
Busetto and Ranghetti (2016) <doi:10.1016/j.cageo.2016.08.020>.

Luigi Ranghetti

MODIStsp

Find, Download and Process MODIS Land Products Data

Lorenzo Busetto

Leah Wasser

Jeff Hanson

Babak Naimi

get_mod_dirs function

<dl><dt>http</dt>
<dd><code>character</code> http site on lpdaac corresponding to the selected MODIS
product</dd>
<dt>download_server</dt>
<dd><code>character ["http" | "offline"]</code> download service
to be used; if NA, the script tries to download with http.</dd>
<dt>user</dt>
<dd><code>character</code> username for earthdata http server</dd>
<dt>password</dt>
<dd><code>character</code> password for earthdata http server</dd>
<dt>yy</dt>
<dd><code>character</code> Year for which the folder containing HDF images are to
be identified</dd>
<dt>n_retries</dt>
<dd><code>numeric</code> number of times the access to the http server
should be retried in case of error before quitting, Default: 20</dd>
<dt>gui</dt>
<dd>`logical`` indicates if processing was called from the GUI
environment or not. If not, processing messages are sent to a log file
instead than to the console/GTK progress windows.</dd>
<dt>out_folder_mod</dt>
<dd><code>character</code> output folder for MODIS HDF storage</dd></dl>

Arguments

Original code by Babak Naimi (<code>.getModisList</code>, in
<a href="https://r-gis.net/?q=ModisDownload">ModisDownload.R</a>)
modified to adapt it to MODIStsp scheme and to http archive (instead than old
FTP) by:
Lorenzo Busetto, phD (2014-2017)
Luigi Ranghetti, phD (2016-2017)

Author

Get list of MODIS data folders from http server — get_mod_dirs

<dl>

<dt>http</dt>
<dd><code>character</code> http site on lpdaac corresponding to the selected MODIS
product</dd>


<dt>download_server</dt>
<dd><code>character ["http" | "offline"]</code> download service
to be used; if NA, the script tries to download with http.</dd>


<dt>user</dt>
<dd><code>character</code> username for earthdata http server</dd>


<dt>password</dt>
<dd><code>character</code> password for earthdata http server</dd>


<dt>yy</dt>
<dd><code>character</code> Year for which the folder containing HDF images are to
be identified</dd>


<dt>n_retries</dt>
<dd><code>numeric</code> number of times the access to the http server
should be retried in case of error before quitting, Default: 20</dd>


<dt>gui</dt>
<dd>`logical`` indicates if processing was called from the GUI
environment or not. If not, processing messages are sent to a log file
instead than to the console/GTK progress windows.</dd>


<dt>out_folder_mod</dt>
<dd><code>character</code> output folder for MODIS HDF storage</dd>

</dl>

Original code by Babak Naimi (<code>.getModisList</code>, in
<a href='https://r-gis.net/?q=ModisDownload'>ModisDownload.R</a>)
modified to adapt it to MODIStsp scheme and to http archive (instead than old
FTP) by:
Lorenzo Busetto, phD (2014-2017)
Luigi Ranghetti, phD (2016-2017)

get_mod_dirs: Get list of MODIS data folders from http server

Description

Usage

Value

Arguments

Author