Re: very slow Save[]s on Mathematica V7??
- To: mathgroup at smc.vnet.net
- Subject: [mg96430] Re: very slow Save[]s on Mathematica V7??
- From: Igor Antonio <igorantonio at gmail.com>
- Date: Fri, 13 Feb 2009 03:45:13 -0500 (EST)
- References: <gmp0ot$bvf$1@smc.vnet.net> <gmrlvq$9ij$1@smc.vnet.net>
What are you exactly asking for #1? If the change is documented? If the new format is documented? SHP documentation can be found in the Help Viewer. You can also do FileFormat[] on your file to figure out what format Import is going to use. For #2, you can explicitly give the format: Import["file.zip", "ZIP"] will give you the list of filenames contained in the file. Igor On Feb 11, 4:22 am, congruentialumina... at yahoo.com wrote: > Thanks Igor. 2 questions: > > 1. Is this documented anywhere? > 2. is there an option to inhibit this "default" behavior? > > Regards..RogerW > > On Feb 10, 2:47 am, Igor Antonio <igoranto... at gmail.com> wrote: > > > > > Franklin, > > > Support for SHP files was added in V7. In version 6, you're just > > importing the list of filenames inside the zip file. With V7, Import > > expands the zip file, recognizes the SHP bundle, and Imports the map > > contained in the file. > > > In[2]:= a = > > Import["http://exampledata.wolfram.com/usamap.zip";, > > ImageSize -> Medium] > > > Out[2]= {"railroads.dbf", "railroads.prj", "railroads.shp", \ > > "railroads.shx", "states.dbf", "states.prj", "states.shp", \ > > "states.shx"} > > > In[3]:= $Version > > > Out[3]= "6.0 for Mac OS X x86 (64-bit) (May 21, 2008)" > > > ======================== == > == > > ================= > > > In[5]:= a = > > Import["http://exampledata.wolfram.com/usamap.zip";, > > ImageSize -> Medium]; > > > In[6]:= Head@a > > > Out[6]= Graphics > > > In[7]:= ByteCount@a > > > Out[7]= 15319544 > > > In[8]:= $Version > > > Out[8]= "7.0 for Mac OS X x86 (64-bit) (November 11, 2008)" > > > Igor