[R-sig-Geo] MODIS download

[Babak Naimi]

Dear Matteo,

Thanks for your nice package. Actually, I was not aware of this package. I think the ModisDownload and getHDF functions work almost the same since in both you can select a range of tiles and dates for required Modis product. The nice thing, however, about your package is that you only need to know the name of MODIS product for downloading it, while in ModisDownload you need to introduce the FTP address. In ModisDownload also I guess it is nice as by executing one command, you can download, subset, mosaic, reproject and have the images in Geotiff format. 

About wget, I think it is not necessary to have it on your machine for windows (at least for windows 7!). I used the following command inside ModisDownload and tested it on Windows and Linux. It works fine!

download.file(url,destfile=ModisName,mode='wb',method='auto',quiet=T, cacheOK=FALSE)

Best regards,
Babak



-----Original Message-----

--- On Thu, 27/10/11, Matteo Mattiuzzi <matteo.mattiuzzi at boku.ac.at> wrote:

> From: Matteo Mattiuzzi <matteo.mattiuzzi at boku.ac.at>
> Subject: [R-sig-Geo] MODIS download
> To: r-sig-geo at r-project.org
> Date: Thursday, 27 October, 2011, 9:37
> 
> Dear list, dear Babak
>  
> I recently created a package that also downloads Modis-grid
> data. I was
> waiting for the communication to the list until more tests
> have been
> absolved. But now test could now be made by interested
> people. The
> package works slightly different than the script of Babak,
> so I hope
> that we didn’t do the work totally twice. 
> The origin of the “getMODIS” package is also in Hengels
> (great thanks)
> code but the capabilities have been enhanced. 
>  
> The package has been tested with Linux and Windows 7 and it
> works fine,
> but tests are still going on! (At the moment wget is used
> for download
> the files so probably you have to install it first on your
> machine
> (thanks Pieter Beck for reminding me that)
> If you wish to use MRT capabilities you need to install it
> as well (+
> set the path to MRT!) 
>  
> > install.packages("getMODIS", repos="http://R-Forge.R-project.org")
>  
> The purpose of teh package is:
> - to get a local MODIS data archive (so only parts of the
> online pool)
> by simple subst. Everything what is available locally is
> not downloaded
> again! The main sub setting information is: Product, period
> and extent.
> The package can use objects from raster package, all
> raster* objects or
> the extent(raster*), or the “national boundaries” file
> (worldHires) from
> the mapdata package as extent information.
>  
> - to use MRT capabilites  
>  
> MRT is not fully implemented yet (tested only with
> geographic LatLon
> and UTM projection as output. My personal priority list can
> be modified
> by tester whishes).
> The manual can be downloaded here:
> http://www.wuala.com/MatteoMattiuzzi/getMODIS/
> A stepwise how to is missing yet, as soon as my time allows
> I’ll create
> it. 
> I’m happy for any feedback!
> Matteo Mattiuzzi
> 
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> 
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