Re: Import files on accessible URL and save in
- To: mathgroup at smc.vnet.net
- Subject: [mg122758] Re: Import files on accessible URL and save in
- From: DrMajorBob <btreat1 at austin.rr.com>
- Date: Thu, 10 Nov 2011 06:49:50 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <201111050945.EAA10302@smc.vnet.net>
- Reply-to: drmajorbob at yahoo.com
But this also fails: "/private/var/folders/kY/kYL-hxebGaefEKwlddWc3++++TM/-Tmp-/\ Temp7483389857745393361___www.wolfram.com" // DeleteFile $Failed DeleteFile::nffil: File not found during DeleteFile[/private/var/folders/kY/kYL-hxebGaefEKwlddWc3++++TM/-Tmp-/Temp7483389857745393361___www.wolfram.com]. >> It strikes me as a strange place to import files by default (on a Mac), where a non-Unix expert can't easily deal with them. Bobby On Wed, 09 Nov 2011 05:24:33 -0600, Todd Gayley <tgayley at wolfram.com> wrote: > At 04:24 PM 11/8/2011, DrMajorBob wrote: >> This fails, and I wonder why? >> >> DeleteDirectory["/private/var/folders/kY", DeleteContents -> True] >> >> $Failed >> >> DeleteDirectory::dirne: Directory /private/var/folders/kY not empty. >> > > > I would guess it is because other processes have files open in that > directory. Why are you trying to delete an entire directory (two > levels up, no less), when FetchURL just created one file? > > As for your question about documentation, Utilities`URLTools`FetchURL > is not an officially documented part of the system, which could be > for a number of reasons. However, it has been a stable part of > Mathematica for long enough (it is used internally by Import) that I > am comfortable recommending it to users who need its functionality. > > > Todd Gayley > Wolfram Research > > >> On Tue, 08 Nov 2011 16:08:46 -0600, DrMajorBob <btreat1 at austin.rr.com> >> wrote: >> >>> <<Utilities`URLTools` >>> FetchURL["http://www.wolfram.com";] >>> "/private/var/folders/kY/kYL-hxebGaefEKwlddWc3++++TM/-Tmp-/Temp7483389857745393361___www.wolfram.com" >>> >>> Good job! Now, then... where is that file, and how do I remove it? >>> >>> Bobby >>> >>> On Tue, 08 Nov 2011 06:14:50 -0600, Todd Gayley <tgayley at wolfram.com> >>> wrote: >>> >>>> At 03:45 AM 11/5/2011, Gy Peng wrote: >>>>> Dear Mathematica friends, >>>>> >>>>> I want to Import some files stored on internet by: >>>>> >>>>> Import["http://url";, ...] >>>>> >>>>> This allow me to see the file in the notebook of mathematica. >>>>> However, >>>>> what >>>>> I want to do is to download and save the files in local machine. And >>>>> since >>>>> I have may be hundreds or thousands files need to be download and >>>>> save. Is >>>>> there any why in Mathematica to do it in a most optimized and fast >>>>> way? >>>>> >>>>> And can read the file names in a single string in Mathematica like: >>>>> >>>>> { file1, file2, file3, file4, ...} >>>>> >>>>> How could I make a loop in Mathematica to download and save all of >>>>> them in a same directory in local machine by Mathematica? >>>>> >>>>> I would thank you for all your kind reply and help!!!! >>>> >>>> >>>> The FetchURL function, which is used internally by Import, will do >>>> what you want: >>>> >>>> In[10]:= << Utilities`URLTools` >>>> >>>> In[11]:= FetchURL["http://www.wolfram.com";] >>>> >>>> Out[11]= >>>> "C:\\Users\\tgayley\\AppData\\Local\\Temp\\Temp65400___www.wolfram.com" >>>> >>>> If you want to choose a specific location and filename for the >>>> downloaded file, you pass it as the second argument: >>>> >>>> In[12]:= FetchURL["http://www.wolfram.com";, "c:\\foo.txt"] >>>> >>>> Out[12]= "c:\\foo.txt" >>>> >>>> If you want a program that downloads a list of URLs to a specific >>>> directory, this will do the trick. >>>> >>>> listOfURLs = {"http://www.wolfram.com";, "http://www.apple.com";, >>>> "http://www.microsoft.com"}; >>>> downloadDir = "c:\\foo"; (* I assume it exists *) >>>> n = 1; >>>> {#, FetchURL[#, ToFileName[downloadDir, "file" <> >>>> ToString[n++]]]} & /@ listOfURLs >>>> >>>> This returns a list of {url, filename} pairs so you can match up each >>>> URL with the corresponding file. You could also create filenames >>>> based on the URL so that it was immediately obvious which file was >>>> the product of which URL. >>>> >>>> >>>> Todd Gayley >>>> Wolfram Research >>>> >>> >> >> >> -- >> DrMajorBob at yahoo.com > > -- DrMajorBob at yahoo.com
- References:
- Import files on accessible URL and save in local machine.
- From: Gy Peng <hitphyopt@gmail.com>
- Import files on accessible URL and save in local machine.